Gear Weight Calculator
Calculate total climbing rack weight from selected protection, quickdraws, slings, and personal gear. See weight breakdown by category and identify where to save weight.
About this calculator
This calculator totals the weight of a trad or sport climbing rack by combining user-entered piece counts with fixed average weights per item — about 110g per cam, 45g per nut, 100g per quickdraw, and 75g per 120cm sling — plus rope, harness, and helmet weights entered directly in kilograms. It also adds a flat 510g for miscellaneous essentials (belay device, chalk bag, and two locking carabiners) that aren't broken out as separate inputs. The output splits weight into protection (cams + nuts), connection hardware (quickdraws + slings), and personal gear (rope + harness + helmet + misc), plus a rack-style classification — Sport Only, Cam-Only, Nut-Only, or Full Trad Rack — based on which protection types are present.
Because the per-item weights are fixed averages rather than actual product specifications, the total is an estimate: a rack built from lightweight aluminum or offset cams and nuts will weigh meaningfully less than this model predicts, while a rack of older steel-stemmed gear will weigh more. Likewise the flat 510g miscellaneous allowance won't match a rack carrying extra items like ascenders, extra locking biners, or a tagline. Use this calculator to compare relative rack configurations and spot which category is adding the most weight — for a precise pack weight before a big alpine objective, weigh your actual gear on a scale instead.
Inputs
Results
Total Rack Weight
7.49 kg
≈ 4 bags of sugar
How to Use This Calculator
- Enter the number of cams, nuts, quickdraws, and slings you plan to carry on the route.
- Input counts for personal items like harness, belay device, helmet, and shoes.
- Add any optional items such as ascenders, taglines, or extra anchoring gear.
- Read Total Rack Weight in kg to assess whether your load is within a comfortable range.
- Review the Weight Breakdown by Category chart to identify the heaviest categories for trimming.
- Use the results to decide which duplicates or rarely used pieces to leave at the base.
How the result changes with Rope Weight
| Rope Weight | Total Rack Weight |
|---|---|
| 1.75 | 5.74 kg |
| 2.63 | 6.62 kg |
| 5.25 | 9.24 kg |
| 8 | 11.99 kg |
What each input means
- Number of Cams
- Total spring-loaded camming devices (SLCDs). A single rack typically has 6-12 cams. Average weight ~110g each.
- Number of Nuts
- Passive wired nut placements. A standard set has 8-13 nuts. Average weight ~45g each.
- Number of Quickdraws
- Sport climbing quickdraws or alpine draws. Most single-pitch sport routes need 10-15. Average weight ~100g each.
- Number of Slings
- Sewn or tied slings (120cm) for extensions and anchors. Average weight ~75g each.
- Rope Weight
- Total rope weight in kilograms. A 60m × 9.8mm single rope weighs ~3.5 kg. Check your rope's specs.
- Harness Weight
- Climbing harness weight in kilograms. Sport harnesses ~300-400g, trad harnesses ~400-500g.
- Helmet Weight
- Climbing helmet weight in kilograms. Modern helmets range from 200-350g.
What each result means
- Total Rack Weight
- Combined weight of all climbing gear including miscellaneous items (belay device, chalk bag, locking carabiners).
- Total Weight
- Total weight in grams for precise comparison.
- Protection Weight
- Combined weight of cams and nuts (passive and active protection).
- Connection Weight
- Combined weight of quickdraws and slings.
- Personal Gear Weight
- Combined weight of rope, harness, helmet, and miscellaneous items.
- Rack Style
- Classification based on protection types: Sport Only, Cam-Only, Nut-Only, or Full Trad Rack.
- Total Gear Pieces
- Total count of protection, quickdraws, and slings on the rack.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersNumber of Cams = 8, Number of Nuts = 10, Number of Quickdraws = 12, Number of Slings = 4 = 7 input(s) provided
- Calculate Total Rack WeightTotal Rack Weight7.49 = 7.49
- Calculate Total WeightTotal Weight7490 = 7490
- Calculate Protection WeightProtection Weight1330 = 1330
Engine last updated . Checked against 1 independently-derived test — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
What's included in the flat 510g miscellaneous allowance?
It's a fixed lump sum meant to represent a belay device (~200g), a chalk bag (~150g), and two locking carabiners (~160g), added automatically to every calculation regardless of what you enter. It doesn't scale with your rack size and won't account for extra items like ascenders, a tagline, or additional locking biners beyond those two — if you carry more or less of that gear, the total will be off by roughly the difference.
How is 'Rack Style' determined?
It's based purely on whether your cam and nut counts are zero or positive: entering zero for both cams and nuts gives 'Sport Only', having both greater than zero gives 'Full Trad Rack', cams alone gives 'Cam-Only Rack', and nuts alone gives 'Nut-Only Rack'. It doesn't consider quickdraws, slings, or any other input.
Why would my actual rack weight differ from what this calculator reports?
Every protection and connection item uses a fixed average weight (110g per cam, 45g per nut, 100g per quickdraw, 75g per sling) rather than your gear's real specifications, so a rack of lightweight aluminum or offset cams will weigh less than predicted, while older steel-stemmed gear will weigh more. The rope, harness, and helmet weights you enter directly are exact, but everything counted by piece is only an estimate.
Why do I enter rope, harness, and helmet weight in kilograms but cams and nuts as a count?
Cams, nuts, quickdraws, and slings are counted as pieces because the calculator applies a standard average weight per unit to each, so a count is all it needs. Rope, harness, and helmet weight vary more by model and length than a single average could capture accurately, so those three ask for the actual weight in kilograms, which you can typically find on the product's spec sheet or packaging.
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