Crafts, Hobbies & Games
Making things by hand, plus collecting and tabletop gaming — yarn and fabric quantities, wood and metal stock, gemology, resin ratios and project costing.
Making things by hand, costed properly. Yarn yardage and gauge, fabric layout and seam allowance, quilt block counts, board feet and turning blanks, leather and resin quantities, dye and mordant ratios, and the pricing maths that turns a hobby into a stall.
Gemology has a named section here. Diamond and coloured-stone carat weight from measurements, faceting angles and critical angle by refractive index, yield from rough, and price-per-carat comparisons sit with the jewellery-making calculators that use them.
Metalwork and blacksmithing — stock reduction, forge fuel, quench and temper schedules — sits alongside woodworking, and the gaming section covers tabletop RPG probability, dice odds, model kit paint and collectible grading.
248 calculators in 7 sections.
Start with these
The questions people most often bring to this page, and the calculator that answers each one.
- Metal Stock Calculator — Bar, sheet and tube weight from dimensions and alloy.
- Damascus Layer Calculator — Layer count through folds, and finished billet thickness.
Matches are ranked by relevance. Use CtrlK anytime to search the full site.
Textiles, Sewing & Fibre Arts
Yarn and fabric quantities, gauge, quilt blocks, weaving setts and dyeing ratios.
Custom Fit Adjustment Calculator
Calculate pattern adjustments at bust, waist, and hip by comparing your body measurements to the pattern. Get per-seam adjustments for accurate fitting.
Elastic Length Calculator
Calculate the correct cut length for elastic based on body measurement, desired stretch ratio, and overlap for joining. Get comfort recommendations.
Fabric Requirement Calculator
Estimate yards of fabric needed for your garment based on type, size, fabric width, and layout efficiency. Works for shirts, pants, dresses, jackets, and skirts.
Gathering Ratio Calculator
Calculate the fabric length needed for gathered sections based on finished length and fullness ratio. Typical ratios: 1.5× for light, 2× for medium, 3× for heavy gathering.
Interfacing Calculator
Calculate how much interfacing you need based on the number of pieces, average area, and waste factor. Get yards to purchase.
Pattern Grading Calculator
Calculate adjusted measurements for grading sewing patterns between sizes. Get proportional adjustments for bust, waist, hip, shoulder, and sleeve.
Pleating Calculator
Calculate how much fabric you need for knife, box, or inverted box pleats. Enter finished width, pleat depth, count, and type.
Seam Allowance Calculator
Calculate the total extra fabric needed for seam allowances across all pattern pieces. Enter piece count, seam allowance width, and total seam length.
Thread Consumption Calculator
Calculate how much thread you need for your sewing project based on total seam length, stitch type, and stitch length. Includes 15% safety margin.
Zipper Length Calculator
Calculate the correct zipper length for your garment opening. Accounts for zipper type (regular, invisible, separating) and seam allowances.
Buttonhole Spacing Calculator
Calculate even button and buttonhole placement from garment length, button count, and offsets.
Collar Stand Calculator
Calculate collar dimensions from neckline measurement and collar style for accurate pattern drafting.
Dart Manipulation Calculator
Calculate dart rotation and distribution for pattern adjustments including angle, width, and depth per dart.
Ease Distribution Calculator
Calculate ease allocation across bust, waist, and hip for different fit types in garment construction.
Grading Rule Calculator
Calculate size grade rules from body measurement standards for pattern grading between sizes.
Lining Cut Calculator
Calculate lining dimensions adjusted from shell pattern with appropriate ease, hem, and pleat allowances.
Pattern Marker Efficiency Calculator
Calculate fabric utilization percentage from marker layout dimensions and pattern piece areas.
Princess Seam Calculator
Calculate princess seam placement from bust point and desired fit for bodice pattern construction.
Sleeve Ease Calculator
Calculate sleeve cap ease amount for different sleeve types including set-in, shirt, raglan, and drop shoulder.
Waistband Calculator
Calculate waistband cut dimensions with overlap, seam allowance, and closure placement for garment construction.
Blanket Size Calculator
Calculate cast-on stitches, total rows, and yarn yardage needed for a knit or crochet blanket based on your desired dimensions and gauge.
Circular Needle Length Calculator
Determine the right circular needle length for your project based on the project diameter, stitch count, and gauge.
Colorwork Chart Calculator
Calculate yarn yardage per color for stranded colorwork based on total stitches, color percentages, and yarn usage. Includes float allowance.
Gauge Swatch Calculator
Calculate the number of stitches and rows you need to cast on based on your gauge swatch measurements and desired dimensions.
Hat Sizing Calculator
Calculate cast-on stitches and crown decrease rounds for a knit hat based on head circumference, desired height, and gauge.
Sock Sizing Calculator
Calculate cast-on stitches, heel flap rows, and foot rounds for hand-knit socks based on foot measurements and gauge.
Stitch Pattern Repeat Calculator
Adjust your stitch count to fit a pattern repeat evenly, accounting for edge stitches. Shows the closest options above and below.
Sweater Sizing Calculator
Calculate cast-on count, body rows, and piece dimensions for a custom-fit sweater based on your chest measurement and gauge.
Yarn Weight Conversion
Convert wraps per inch (WPI) to yarn weight category and get recommended gauge range and needle size.
Yarn Yardage Calculator
Estimate total yarn needed for your project and how many skeins to buy, based on stitch count, row count, and yarn usage per stitch.
Backing Fabric Calculator
Calculate the total yardage of backing fabric needed, including overlap and piecing for wider quilts.
Batting Size Calculator
Calculate the batting dimensions you need based on quilt top size and desired overhang for quilting ease.
Binding Calculator
Calculate the number of binding strips and fabric yardage needed to bind your quilt based on perimeter, binding width, and fabric width.
Block Layout Calculator
Determine how many blocks fit in your target quilt dimensions and see the actual finished size with sashing.
Flying Geese Calculator
Calculate the fabric square and rectangle sizes needed for flying geese units using traditional or no-waste methods.
Half-Square Triangle Calculator
Calculate the starting square size for half-square triangles (HSTs) based on finished size, seam allowance, and construction method.
Longarm Quilting Cost Calculator
Estimate the cost of longarm quilting services based on quilt size, design complexity, and thread upgrades.
Fabric Yardage for Quilts
Calculate how many yards of fabric you need based on piece count, piece dimensions, fabric width, and seam allowance.
Quilt Size Calculator
Calculate the finished dimensions of your quilt based on block size, layout, sashing, and border width.
Strip Piecing Calculator
Calculate strip cut width, total strips needed, and fabric yardage for strip-pieced quilting projects.
Warp Calculation Calculator
Warp length from finished size, loom waste, and shrinkage.
Sett Calculator
Ends per inch from yarn size and weave structure.
Yarn Quantity Calculator
Warp and weft yardage from project dimensions and sett.
Reed Selection Calculator
Correct reed dent from sett and threading pattern.
Loom Width Calculator
Minimum weaving width from finished width and shrinkage.
Color-and-Weave Effect Calculator
Pattern prediction from threading and color sequence.
Towel Yardage Calculator
Warp and weft for multiple towels in one warp.
Rigid Heddle Project Planner Calculator
Yarn and setup for rigid heddle loom projects.
Tapestry Yarn Calculator
Yarn requirements from cartoon dimensions and detail level.
Warp Beam Capacity Calculator
Maximum warp length from beam diameter and yarn size.
Twist Per Inch Calculator
TPI from fiber type and desired yarn characteristics.
Drafting Ratio Calculator
Draw ratio from fiber diameter and target yarn count.
Fiber-to-Yarn Yield Calculator
Finished yarn yardage from raw fiber weight.
Plying Calculator
Singles twist and plying twist for balanced yarn.
Fiber Blend Ratio Calculator
Blending percentages for target yarn properties.
Spindle Speed Calculator
Optimal whorl size from target twist and drafting speed.
Roving Weight Calculator
Ounces of roving needed for target yardage.
Fleece Yield Calculator
Clean fiber weight from raw fleece weight and waste.
Yarn Wraps Per Inch Calculator
WPI measurement and yarn weight classification.
Spinning Wheel Ratio Calculator
Drive ratio from whorl and drive wheel diameters.
Color Fastness Prediction Calculator
Predict expected wash and light fastness ratings from dye type, fiber, and shade depth.
Dye Bath Calculator
Calculate dye weight, water volume, and auxiliary chemicals for target shade depth and fabric weight.
Fabric Drape Coefficient Calculator
Calculate fabric drape coefficient from Cusick drape test measurements to assess how fabric hangs and flows.
Fabric Shrinkage Calculator
Calculate fabric shrinkage percentage and determine pre-cut dimensions to achieve desired finished size after washing.
Fabric Tensile Strength Calculator
Estimate fabric breaking strength from fiber type, weave structure, yarn count, and thread density.
Fabric Weight Converter
Convert fabric weight between GSM, oz/yd², and oz/linear yard for accurate textile comparison and specification.
Fiber Blend Calculator
Calculate blend ratios by weight for mixed fiber yarns and estimate blended material cost.
Thread Count Calculator
Calculate total thread count from warp and weft threads per inch for fabric quality assessment.
Weave Draft Generator
Generate threading and treadling parameters for basic weave structures including plain, twill, satin, and basket weaves.
Yarn Denier/Tex Converter
Convert between denier, tex, Nm, and Ne yarn numbering systems for fiber and yarn specification.
Dye Bath Ratio Calculator
Water-to-fabric ratio from weight and dye method.
Color Recipe Calculator
Dye percentages for target color from primary dye stock.
Mordant Calculator
Mordant weight from fiber weight and type (alum, iron, tannin).
Natural Dye Calculator
Plant material weight from fiber weight and color depth.
Resist Dyeing Calculator
Wax or paste volume from fabric area for batik/shibori.
Indigo Vat Calculator
Chemical quantities for indigo reduction vat.
Dye Exhaustion Rate Calculator
Dye uptake efficiency from absorbance measurements.
Discharge Printing Calculator
Chemical concentration for color removal printing.
Color Fastness Prediction Calculator
Expected wash and light fastness from dye class.
Tie-Dye Calculator
Dye volume and fold pattern from garment type and design.
Fabric Care Label Decoder Calculator
Care instructions from international care symbols.
Stain Removal Guide Calculator
Treatment method from stain type and fabric content.
Garment Longevity Calculator
Expected wear life from fabric, care, and usage frequency.
Dry Clean vs Wash Cost Calculator
Lifetime care cost comparison from garment type.
Color Fastness Test Calculator
Expected color retention from dye type and care method.
Fabric Pilling Calculator
Pilling tendency from fiber content and yarn construction.
Moth Protection Calculator
Cedar and lavender quantities for natural moth protection.
Shoe Care Schedule Calculator
Cleaning, conditioning, and resoling intervals by shoe type.
Vintage Garment Care Calculator
Appropriate cleaning methods for antique textiles.
Wool Felting Calculator
Shrinkage prediction from wool type and agitation.
Woodworking & Furniture
Board feet, cut lists, joinery, turning blanks and finishing quantities.
Board Foot Calculator
Calculate board feet from lumber dimensions. Enter thickness, width, length, and quantity to determine total board footage for your woodworking project.
Cabinet Material Calculator
Estimate the number of 4×8 sheet goods and edgebanding feet needed for your cabinet project. Accounts for standard cabinet parts and waste factor.
Dovetail Joint Calculator
Calculate pin count, tail spacing, and layout for hand-cut dovetail joints. Enter board width, pin size, and angle for exact joint layout.
Drawer Slide Calculator
Calculate drawer box dimensions for your cabinet opening and slide type. Get exact width, height, and depth including clearances for full-extension, undermount, or center-mount slides.
Joinery Angle Calculator
Calculate miter and bevel angles for polygon miters and compound joints. Enter the number of sides and optional tilt angle to find exact saw settings.
Lathe Speed Calculator
Calculate the optimal lathe RPM for your workpiece based on diameter and wood type. Get roughing and finishing speed recommendations.
Sawmill Yield Calculator
Estimate board feet yield from a log using Doyle, Scribner, and International 1/4" rules. Enter log diameter, length, and taper.
Wood Finishing Coverage Calculator
Calculate how much finish product you need based on surface area, number of coats, coverage rate, and waste factor. Works for oil, varnish, lacquer, and stain.
Wood Moisture Content Calculator
Calculate the equilibrium moisture content (EMC) of wood based on ambient temperature and relative humidity. Uses the Hailwood-Horrobin model.
Wood Movement Calculator
Calculate wood expansion and contraction based on species, moisture content change, width, and grain direction. Essential for planning joints, tabletops, and panels.
Bowl Blank Calculator
Blank dimensions from finished bowl diameter and depth.
Spindle Turning Speed Calculator
Maximum RPM from workpiece diameter and material.
Segmented Turning Calculator
Ring segments from diameter, segment count, and angle.
Pen Blank Calculator
Blank dimensions for pen kit mandrel and tube.
Hollow Form Calculator
Wall thickness and depth from form dimensions.
Turning Tool Angle Calculator
Bevel angle and presentation angle for different tools.
Chuck Jaw Selection Calculator
Jaw type and expansion range from workpiece diameter.
Green Wood Shrinkage Calculator
Expected movement from green to dry for turned pieces.
Lathe Vibration Calculator
Damping needs from workpiece weight and balance.
Wood Drying (Turning) Calculator
Drying time for rough-turned green bowls before finish turning.
Table Design Calculator
Calculate leg dimensions, apron sizing, taper angles, board footage, and lumber cost for dining and work table projects.
Chair Ergonomics Calculator
Calculate ideal seat height, depth, width, backrest angle, and armrest height from body measurements for custom chair building.
Bookshelf Design Calculator
Calculate shelf deflection, maximum safe span, minimum thickness, and material requirements based on load, wood species, and dimensions.
Drawer Construction Calculator
Calculate drawer box dimensions, slide sizing, cut list, and material needs from your cabinet opening measurements and joint type.
Veneering Calculator
Calculate veneer square footage, leaf count, adhesive quantity, and cost for furniture veneering projects with grain matching waste factors.
Upholstery Spring Calculator
Calculate spring count, layout grid, spring twine, and upholstery fabric yardage for furniture seat and back construction.
Murphy Bed Hardware Calculator
Calculate gas piston force, stroke length, and hardware requirements for a Murphy wall bed based on mattress weight and bed dimensions.
Cabinet Door Style Calculator
Calculate stile and rail dimensions, center panel size, and board feet needed for frame-and-panel cabinet doors.
Furniture Finish Schedule Calculator
Calculate finish material quantities, dry times, and total project timeline for polyurethane, lacquer, oil, shellac, and other wood finishes.
Wood Moisture Equilibrium Calculator
Calculate the Equilibrium Moisture Content (EMC) of wood from temperature and humidity using the Hailwood-Horrobin equation, plus dimensional change and acclimation time.
Metalwork & Blacksmithing
Stock reduction, forge fuel, heat treatment and hammer work planning.
Anvil Size Calculator
Determine the recommended anvil weight based on the heaviest workpiece you plan to forge and the type of work you do.
Coal/Gas Consumption Calculator
Estimate fuel consumption and cost per session for coal, propane, or natural gas forges based on forge size and session length.
Damascus Layer Calculator
Calculate the total number of layers in a Damascus steel billet from the starting layer count and number of folds.
Forge Temperature Calculator
Determine the correct forge temperature range and heat color for different steel types and blacksmithing operations.
Forge Welding Temperature Calculator
Determine the safe forge welding temperature, flux type, and heat color when welding two different steel types together.
Metal Finishing Time Calculator
Estimate the total time to hand-finish a metal piece through a grit progression from coarse to fine, accounting for surface area and finish type.
Metal Stock Calculator
Calculate the required stock bar length based on finished piece dimensions, starting stock cross-section, and expected material loss from forging.
Quenching Medium Calculator
Calculate the required quench oil or water volume and expected temperature rise for hardening different steel types.
Tempering Color Calculator
Find the correct tempering temperature, oxide color, and expected hardness (HRC) for your steel type and intended use.
Twist Rate Calculator
Calculate total turns, heats required, and elongation when twisting bar stock for decorative ironwork or Damascus patterns.
Jewellery Making & Gemology
Carat weight, faceting angles, diamond pricing, metal cost and casting.
Casting Grain Calculator
Calculate how much casting grain (metal) you need for lost-wax casting based on wax model weight, metal density, and sprue/button allowance.
Chain Length Calculator
Calculate how much wire you need to make a chain of a given length. Accounts for link size, wire gauge, and link pattern complexity.
Metal Weight Calculator
Calculate the weight of jewelry metal from dimensions and alloy type. Supports sheet, round wire, and tube shapes in silver, gold, copper, and brass.
Ring Blank Calculator
Calculate the metal strip length and width needed to fabricate a ring from US ring size, band width, and metal thickness.
Stone Setting Calculator
Calculate bezel height, cup diameter, and strip length for setting gemstones. Supports bezel, prong, and channel setting types.
Carat Weight Estimator
Estimate gemstone carat weight from dimensions and specific gravity for mounted and unmounted stones.
Diamond Price Calculator
Estimate diamond price per carat from the 4Cs: cut, clarity, color, and carat weight.
Faceting Angle Calculator
Calculate optimal crown and pavilion angles for different gem cuts based on refractive index.
Fluorescence Impact Calculator
Calculate diamond price adjustment for fluorescence grade relative to color grade.
Gem Cut Yield Calculator
Estimate expected polished gemstone weight from rough stone weight, shape, and target cut.
Gem Investment Return Calculator
Calculate ROI from gemstone purchase price, appreciation rate, holding period, and transaction costs.
Gem Parcel Pricing Calculator
Calculate per-carat price for calibrated and uncalibrated gem parcels based on size, quality, and count.
Gem Treatment Value Impact Calculator
Calculate price adjustment factors for treated vs untreated gemstones by treatment type and gem species.
Gemstone Density Calculator
Calculate specific gravity from hydrostatic weighing (weight in air and water) for gem identification.
Refractive Index Calculator
Interpret RI measurement and birefringence for gemstone identification against a reference database.
Ceramics, Resin, Leather & Candles
Clay and glaze batches, resin ratios, leather yield, wax and fragrance loads.
Clay Body Recipe Calculator
Calculate ingredient weights for a custom clay body from batch size and percentage breakdown of clay, feldspar, silica, and flux.
Coil Pot Calculator
Calculate total coil length and clay weight needed for a coil-built pot based on dimensions and coil diameter.
Cone Equivalent Calculator
Convert pyrometric cone numbers to temperatures in Fahrenheit and Celsius for oxidation and reduction atmospheres.
Glaze Recipe Calculator
Calculate ingredient weights in grams from a total batch weight and percentage breakdown of silica, alumina, flux, and colorant.
Glaze Thickness Calculator
Calculate recommended dip time and number of brush coats to achieve a target glaze thickness based on specific gravity and viscosity.
Kiln Electricity Cost Calculator
Calculate energy consumption in kWh and electricity cost per kiln firing based on kiln wattage, firing duration, and your electricity rate.
Kiln Element Life Calculator
Estimate remaining kiln element firings and months of life based on usage rate, max cone fired, and total firings completed.
Kiln Firing Schedule
Calculate total firing time, peak temperature, and cooling time based on target cone, ramp rate, hold time, and kiln size.
Kiln Loading Calculator
Estimate how many pieces fit per firing and how many shelves you need based on kiln interior volume and piece size.
Shrinkage Rate Calculator
Calculate the final fired size and total shrinkage percentage from wet dimensions, wet-to-dry and dry-to-fired shrinkage rates.
Embedment Calculator
Calculate the net resin needed after accounting for the volume displaced by embedded objects like flowers, coins, or wood pieces.
Epoxy Volume Calculator
Calculate the exact amount of resin and hardener needed for a rectangular mold based on dimensions and mix ratio.
Exothermic Heat Calculator
Estimate the peak temperature and heat risk when pouring resin, based on volume, resin type, and ambient conditions.
Flood Coat Calculator
Calculate the amount of resin needed for flood coats on countertops, tabletops, or artwork based on surface area, thickness, and number of coats.
Pigment Ratio Calculator
Calculate the correct amount of pigment (liquid, powder, or paste) to add to resin for your desired opacity level.
Pressure Pot Sizing Calculator
Determine the minimum pressure pot diameter, height, and PSI needed for bubble-free resin castings based on your largest mold size.
Resin Curing Time Calculator
Estimate pot life, demold time, and full cure time for epoxy resin based on mass, ambient temperature, and resin type.
River Table Calculator
Calculate the total epoxy needed for a river table based on table length, river width, thickness, and average void depth.
Silicone Mold Calculator
Calculate the volume of silicone rubber needed to make a mold by subtracting the master object volume from the mold box volume.
UV Resin Cure Calculator
Estimate the UV cure time for resin layers based on thickness, lamp wattage, distance, and resin clarity.
Candle Burn Time Estimator
Estimate total burn hours for a candle based on wax weight, burn rate by wax type, and wick size factor.
Candle Melt Pool Timer
Estimate hours to achieve a full melt pool based on container diameter, wax type, and wick trim length.
Candle Wax Calculator
Calculate the weight of wax needed to fill a candle container based on container volume, wax type density, and fill percentage.
Cold Process Soap Calculator
Calculate the lye (NaOH) and water amounts needed for cold process soap making based on oil weight, SAP value, lye concentration, and superfat percentage.
Essential Oil Blend Calculator
Calculate drops per fragrance note (top, middle, base) for a custom essential oil blend based on total drops and note percentages.
Fragrance Load Calculator
Calculate the exact amount of fragrance oil needed for your candle based on wax weight and desired fragrance percentage.
Soap Batch Scaling Calculator
Scale a soap recipe up or down by multiplying oil, lye, and water amounts by a scale factor.
Soap Colorant Calculator
Calculate how much mica, oxide, or liquid colorant to add to your soap batch based on oil weight and desired color intensity.
Soap Superfat Calculator
Calculate the actual superfat percentage and excess oil in your soap batch based on oil weight, lye amount, and SAP value.
Wick Size Calculator
Get a recommended wick series and size number based on your container diameter, wax type, and fragrance load.
Belt Sizing Calculator
Calculate leather belt strap length and hole positions from waist measurement, buckle type, and desired hole count and spacing.
Edge Finishing Calculator
Estimate burnishing time and edge paint quantity for leather edge finishing. Supports burnishing, edge paint, or both methods combined.
Leather Dye Coverage Calculator
Calculate how much leather dye you need based on surface area, number of coats, coverage rate, and application method.
Leather Hide Calculator
Calculate how many square feet of leather hide you need from your pattern pieces. Accounts for waste factor and hide size to estimate hides to purchase.
Leather Thickness Converter
Convert between leather thickness units: millimeters, ounces, and irons. Instantly see equivalent values across all three measurement systems.
Thread Length Calculator
Calculate how much thread you need for saddle stitching leather. Uses seam length, leather thickness, and stitch length to estimate total thread required.
Snap & Rivet Sizing Calculator
Determine the correct snap size, post length, and hole punch size based on your leather thickness, number of layers, and snap type.
Stitching Hole Spacing Calculator
Calculate the number of stitching holes and optimal spacing for leather seams. Enter seam length, pricking iron spacing, and desired stitches per inch.
Tooling Depth Calculator
Calculate recommended tooling depth and leather weight based on design complexity and leather type. Essential for leather carving and stamping projects.
Wallet Pattern Calculator
Calculate leather piece dimensions and total material needed for a custom wallet. Supports bifold, trifold, and cardholder styles.
Paper, Bookbinding & Origami
Signature and spine calculations, paper grain, and fold geometry.
Book Block Calculator
Spine width from page count, paper weight, and binding method.
Signature Calculator
Number of signatures from page count and fold type.
Cover Board Calculator
Board dimensions from book block size and turn-in.
Cloth Cover Calculator
Bookcloth dimensions from board size and turn-in allowance.
Thread Length Binding Calculator
Calculate how much sewing thread you need for Coptic, Japanese stab, kettle stitch, and long stitch bookbinding.
Headband Length Calculator
Endbands material from spine width.
Clamshell Box Calculator
Box board dimensions from book measurements.
Paper Grain Direction Calculator
Determine correct paper grain orientation for bookbinding and calculate how many grain-correct pages you can cut from a parent sheet.
Folio Calculator
Sheet layout for different folio sizes (quarto, octavo, etc.).
Endpaper Calculator
Endsheet dimensions from book block size and attachment method.
Origami Paper Size Calculator
Starting square size from target model dimensions.
Modular Unit Count Calculator
Unit count for modular origami from model type.
Crease Pattern Analyzer Calculator
Flat-foldability check from crease pattern.
Paper Weight Selector Calculator
Optimal paper weight from model complexity and size.
Tessellation Repeat Calculator
Grid size and repeat count from paper size and molecule.
Wet Folding Paper Prep Calculator
Methylcellulose concentration for wet folding by paper type.
Box Pleating Grid Calculator
Grid resolution from model detail level.
Kirigami Cut Calculator
Cut pattern for pop-up card and kirigami designs.
Paper Marbling Coverage Calculator
Marbling medium and paint volume from paper size.
Model Difficulty Score Calculator
Complexity rating from step count, folds, and references.
Gaming & Collecting
Dice and card probability, encounter balance, model paint, grading and value.
Fun Calculators
Planetary age, love compatibility, and biorhythm calculator for fun.
Achievement Completion Time Calculator
Estimate hours and weeks to reach 100% game completion based on remaining achievements and play time.
Esports Prize Pool Earnings Calculator
Estimate expected tournament earnings from skill rating, tournament frequency, and prize pool size.
Game Library Value Calculator
Calculate the total value of your game collection across platforms including subscriptions.
Gaming Electricity Cost Calculator
Calculate annual electricity cost and environmental impact from your gaming system's power consumption.
Gaming PC Build Calculator
Estimate total build cost and expected FPS based on component budgets and target resolution.
In-Game Currency Converter
Convert real money to in-game currency and calculate the true cost of virtual items.
MMO Character Stat Calculator
Calculate optimal stat point distribution by class with effective values and derived combat stats.
Monitor Response Time & Input Lag Calculator
Calculate total input lag from refresh rate, pixel response time, network ping, and engine delay.
Streaming Setup Cost Calculator
Calculate complete streaming equipment cost with recurring expenses and break-even analysis.
TCG Deck Value Calculator
Calculate the total cost of a trading card game deck from card rarity counts and average prices.
Dice Roller
Roll virtual dice for tabletop games, D&D, and more. Choose the number of dice, sides per die (d4, d6, d8, d10, d12, d20, d100), and add modifiers.
Campaign Cost Calculator
Calculate the total cost of running a TTRPG campaign including books, miniatures, terrain, and recurring supplies.
Character Point Buy Calculator
Allocate ability scores using the D&D 5e point buy system with automatic cost and modifier calculation.
Dice Probability Calculator
Calculate probability distributions, averages, and target number odds for any dice combination.
D&D Encounter Balance Calculator
Build CR-appropriate encounters for your party using D&D 5e XP thresholds and encounter multipliers.
Initiative Order Calculator
Sort initiative rolls with DEX modifier tie-breaking for up to 5 combatants.
Miniature Scale Calculator
Convert real-world dimensions to miniature scale for painting and terrain building.
Random Encounter Calculator
Calculate expected encounter frequency from travel duration, check frequency, and danger level.
Spell Damage Calculator
Calculate average, expected, and critical spell damage factoring in save DCs and spell level efficiency.
Treasure Hoard Generator
Generate appropriate treasure hoard value from CR tier and party composition following D&D 5e guidelines.
XP Budget Calculator
Calculate XP needed per session to reach your target level based on encounter frequency and pacing.
Scale Conversion Calculator
Convert real-world dimensions to model scale dimensions. Supports common model scales like HO (1:87), N (1:160), O (1:48), and more.
Model Paint Coverage Calculator
Calculate how much paint you need for model kits based on surface area, coats, and whether the surface is primered.
RC Car Gear Ratio Calculator
Calculate final drive ratio and theoretical top speed for RC cars based on pinion, spur, diff ratio, and motor specs.
Model Rocket Motor Calculator
Determine the right motor class for your model rocket based on weight, target altitude, body diameter, and drag.
RC Airplane Wing Loading Calculator
Calculate wing loading, stall speed, and flying characteristics for RC airplanes based on weight and wing area.
Model Railroad Track Calculator
Plan model railroad layouts with minimum curve radius, track spacing, grade limits, and turnout sizing by scale.
Slot Car Speed Calculator
Calculate actual and scale speed of slot cars from motor RPM, tire diameter, gear ratio, and scale.
Diorama Forced Perspective Calculator
Calculate forced perspective scale transitions for dioramas. Determine foreground and background element sizes for depth illusion.
Model Ship Rigging Calculator
Calculate thread diameter, rigging lengths, and ratline counts for scale model ship building.
RC Battery Sizing Calculator
Calculate the right LiPo battery capacity, C rating, and weight for your RC vehicle or aircraft.
Snow Globe Liquid Calculator
Glycerin and water ratio for snow globe viscosity.
Coin Grade Value Calculator
Estimate a coin's market value based on Sheldon scale grade, mintage rarity, key date status, and variety premiums.
Coin Collection Insurance Calculator
Calculate insurance premiums for your coin collection based on value, storage security, and coverage needs.
Stamp Collection Value Calculator
Estimate stamp collection value based on Scott catalog pricing, condition grade, gum status, and age premiums.
Sports Card Value Calculator
Estimate sports card value based on PSA grade, population scarcity, and player status.
Collectible Appreciation Rate Calculator
Annualized return from purchase price and current value.
Grading Service Cost Calculator
Calculate PSA, NGC, PCGS, BGS grading costs and break-even analysis.
Collection Catalog Score Calculator
Track set completion percentage, estimate cost to complete, and calculate the set premium value for your collection.
Auction Commission Calculator
Calculate net proceeds from auction sales after buyer's premium, seller's commission, lot fees, and insurance.
Comic Book Value Calculator
Estimate comic book value based on CGC grade, key issue status, era, and census population data.
Vintage Watch Value Calculator
Estimate vintage watch value based on brand tier, condition, completeness, age, and originality.