Studio utility directory

Pottery Tools

Practical calculators, printable templates, and studio utilities organized by workflow. Each tool includes formulas, worked examples, and explanations.

Clay & Forming

Shrinkage calculations, test-bar measurement, lid fitting, and dimensional planning tools for thrown and hand-built work.

Clay & Forming

Printable Clay Shrinkage Ruler Generator

Generate a full-scale straight or wrap ruler for your exact shrinkage rate. Export tiled PDF or continuous SVG.

Open tool → Clay & Forming

Clay Shrinkage Calculator

Convert wet and fired dimensions in either direction instantly. Includes a worked formula and link to the ruler generator.

Open tool → Clay & Forming

Pottery Size Before Firing

Calculate how large to throw or hand-build a piece to reach your desired fired dimensions.

Open tool → Clay & Forming

Lid & Gallery Fitting Calculator

Calculate wet lid, opening, gallery, and clearance dimensions while accounting for shrinkage and glaze thickness.

Open tool → Clay & Forming

Clay Test-Bar Calculator

Record wet, bone-dry, bisque, and glaze-fired measurements to calculate staged and total shrinkage.

Open tool → Clay & Forming

Multi-Axis Shrinkage Calculator

Handle clay that shrinks differently along length, width, and height — useful for tiles, slabs, and extruded forms.

Open tool → Clay & Forming

Clay Weight & Volume Estimator

Estimate how much clay you need for common thrown and hand-built forms based on target dimensions and wall thickness.

Open tool → Clay & Forming

Custom Rim & Curve Profile Generator

Generate full-scale printable rib and profile templates for bowls, rims, and wall curves.

Open tool →

Molds & Plaster

Volume, ratio, and quantity calculators for plaster mold making and slip casting.

Molds & Plaster

Plaster-to-Water Ratio Calculator

Calculate plaster and water quantities for mold making using your chosen ratio and mold-box dimensions.

Coming soon Molds & Plaster

Slip Casting Volume Estimator

Estimate casting slip volume, reserve, and reclaim quantities for single or batch casting runs.

Coming soon

Glaze & Chemistry

Batch rescaling, specific gravity, and glaze preparation tools.

Glaze & Chemistry

Glaze Batch Rescaling Tool

Scale any glaze recipe to a new batch size while keeping base materials, colorants, and additives clearly separated.

Coming soon Glaze & Chemistry

Glaze Specific Gravity Calculator

Calculate current specific gravity and estimate water additions to reach your target.

Coming soon

Kiln & Studio

Firing cost, cone reference, and studio business calculators.

Kiln & Studio

Kiln Firing Cost Calculator

Estimate electricity cost for a firing based on kiln power, firing duration, duty cycle, and local energy rate.

Coming soon Kiln & Studio

Orton Cone Temperature Reference

Searchable cone and heatwork table with temperatures at multiple heating rates, Celsius and Fahrenheit.

Coming soon Kiln & Studio

Pottery Pricing Calculator

Estimate production cost, break-even price, wholesale, and retail margin for handmade pieces.

Coming soon

Printable Templates

Browser-generated PDF templates for studio record-keeping and measurement.

Printable Templates

Custom Rim & Curve Profile Generator

Full-scale bowl, rib, and rim profile templates exported as tiled A4/Letter PDF or continuous SVG.

Open tool →

About these tools

Every calculator on this site is built to run entirely in your browser. No account, no uploads, no data sent to a server. Results are estimates based on formulas you can verify yourself — always check outputs against physical test bars, actual kiln firings, and your own studio experience.

New tools are added in phases. Phase 1 covers clay forming and shrinkage. Phase 2 will add mold, glaze, and kiln tools. If you have a calculation you'd like to see added, use the contact link in the footer.