What it helps you decide
Convert wet build size to dry, bisque, and final dimensions.
Ceramics planning
Build the wet piece for the fired size you actually need.
Convert between wet, dry, bisque, and final dimensions using measured stage or total shrinkage from your clay and firing schedule.
Start with the example
The values already filled in are a working example—not a recommendation.
- 1Choose the closest starting point.
- 2Replace the example with your real details.
- 3Read the live result and its important limits.
Your numbers
Target dimensions and measured shrinkage
Use the filled example first. Then replace each field with a measured value or your best current estimate.
Step 1Answer one question at a time. Your example values stay available.
Important limit
Use test bars from the exact clay body and firing schedule.
Forming direction, compression, wall thickness, moisture, drying, glaze, kiln loading, firing curve, final cone, atmosphere, and clay lot can produce different shrinkage by axis and piece.
About this free craft materials & fabrication tool
How to use the Clay Shrinkage & Finished Dimensions
Convert wet build size to dry, bisque, and final dimensions. The calculator runs privately in your browser and is designed to make the assumptions behind the answer visible.
What to have ready
Measure the real mold, vessel, fabric, or batch; then use the exact supplier ratio, density, usage ceiling, cure instructions, and expected waste.
Key inputs: Calculation direction; Entered length; Entered width; Entered height; Wet-to-dry shrinkage.
How to use the result
Use the estimate to prepare a controlled test quantity. Confirm fit, cure, burn, color, strength, or cut yield before committing a full production run.
Ready for the connected version?
Turn the calculation into a repeatable workflow.
Batch Scale connects recipes, materials, costs, inventory, production, sales, and your storefront in one workspace.