Clay Weight Calculator

Determine how much clay you need for common pottery forms based on finished dimensions and wall thickness.

Clay Needed per Piece
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(including waste)
Total for All Pieces
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Clay (no waste)
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Dimensions
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25lb Bags Needed
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How Much Clay Do You Need?

The amount of clay needed depends on the form type, dimensions, wall thickness, and how much you trim. Beginners should add 15-25% extra for trimming waste, while experienced potters may only need 10-15%.

Common Clay Weights

  • Mug: 1.0-1.5 lbs of clay
  • Bowl: 1.5-3.0 lbs depending on size
  • Dinner plate: 2.0-3.0 lbs
  • Vase (medium): 3.0-5.0 lbs
  • Teapot body: 2.5-4.0 lbs (plus lid and spout)

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