Resin volume calculator

Work out your project volume, add a waste allowance, and split a mix using the ratio on your product label.

Preparing the workspace…

Mold dimensions

Mold & measurements

Batch worksheet

A + B

Mixing amounts

Inside dimensions / schematic view

Enter mold dimensions

Add your measurements and product volume ratio, then calculate.

Method and limits

Rectangle: length × width × depth. Round mold: π × radius² × depth. Ring: subtract the inner cylinder. Multiply by the mold count, then add the chosen waste percentage.

Component A = total volume × A ÷ (A + B). Component B receives the rest. Irregular molds and embedded objects need a measured capacity; weight and density are not calculated.

1 US fluid ounce = 29.5735295625 mL.

Browser-only draft. Export a copy to keep.

How to use

Choose the project shape and units. Enter internal dimensions, waste allowance and the manufacturer’s volume mixing ratio.

What to check

Volume estimates are not mixing instructions. Weight ratios require material densities and are not interchangeable with volume ratios.