Skip to main content
Calcimator

Coil Pot Calculator

Calculate total coil length and clay weight needed for a coil-built pot based on dimensions and coil diameter.

Inputs

in
in
in
in

Results

Total Coil Length

34.2 ft

≈ 6 adult heights

Clay Weight (Wet)

5.23 lbs

≈ 21 sticks of butter

Wall Coil Length29.5 ft
Base Coil Length4.7 ft
Coil Rows20
How to Use This Calculator
  1. Enter the outer diameter of the pot in inches (e.g., 6 in for a medium vase).
  2. Set the desired pot height in inches from base to rim.
  3. Enter your target wall thickness in inches — 3/8 in is typical for most hand-built pieces.
  4. Set the coil diameter in inches (the thickness of each rolled coil before pressing).
  5. Read the total coil length in feet for both wall coils and the base spiral.
  6. Use the wet clay weight estimate to decide how much clay to wedge before starting.

How the result changes with Pot Diameter

Pot DiameterTotal Coil LengthClay Weight (Wet)
4.524.3 ft3.71 lbs
1388.2 ft13.51 lbs
24199.1 ft30.49 lbs
33313.3 ft47.99 lbs

What each input means

Pot Diameter
Outer diameter of the pot in inches. Measure the widest point.
Pot Height
Desired height of the pot in inches from base to rim.
Wall Thickness
Desired wall thickness in inches. 1/4 to 1/2 inch is typical for most coil pots.
Coil Diameter
Diameter of each rolled coil before pressing. 3/8 to 3/4 inch is common.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Pot Diameter = 6, Pot Height = 8, Wall Thickness = 0.375, Coil Diameter = 0.5 = 4 input(s) provided
  2. Calculate Total Coil Length
    Total Coil Length
    34.2 = 34.2
  3. Calculate Clay Weight
    Clay Weight
    5.23 = 5.23
  4. Calculate Wall Coil Length
    29.5 = 29.5
  5. Calculate Base Coil Length
    Base Coil Length
    4.7 = 4.7

Related Calculators

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

Ceramics & Pottery

Clay Body Recipe Calculator

Calculate ingredient weights for a custom clay body from batch size and percentage breakdown of clay, feldspar, silica, and flux.

Ceramics & Pottery

Shrinkage Rate Calculator

Calculate the final fired size and total shrinkage percentage from wet dimensions, wet-to-dry and dry-to-fired shrinkage rates.

Sculpture

Clay Volume Calculator

Estimate clay weight and volume needed for a sculpture based on dimensions, clay type, and construction method.

Ceramics & Pottery

Cone Equivalent Calculator

Convert pyrometric cone numbers to temperatures in Fahrenheit and Celsius for oxidation and reduction atmospheres.

More in Crafts, Hobbies & Games.