ResinBatchHow it works
FREE TOOLS FOR RESIN MAKERS

Resin calculator.
One plan for the whole batch.

Combine your molds, work out the mix, and keep a batch sheet for the pour.

No account needed
Metric & US units
Mold & batchMixing ratio

Saved in this browser only. Give each version a different name to keep separate copies.

01

Your molds

Cavity dimensions or volume

Example batch. Change the measurements for your molds.

02

Plan the mix

Mixing ratio BY VOLUME
:

Use the volume ratio on your product label. Have a weight ratio? Split a known weight instead.

Estimate kit quantities & material cost Optional

Use the combined resin + hardener kit volume. Costs exclude labor, tax, fees and shipping.

Saved projects 0 on this device

Stored in this browser. Saving with the same name updates its saved copy. Download a sheet for a separate copy.

View batch plan
MEASURE. MIX. MAKE.

A few measurements.
A clearer pour.

Start with the inside of the mold, not its outside edge. Then let the batch calculator combine the pieces.

How the numbers work
  1. 01

    Measure the cavity

    Enter inside dimensions and fill depth, or choose Known volume when you have a reliable volume for one piece.

  2. 02

    Add the pieces

    Each mold can have its own size and quantity. Extra material is a percentage you choose.

  3. 03

    Check the product ratio

    The mold tool splits volume. A weight ratio belongs in the separate mixing calculator.

AT THE WORKBENCH

Make sense of the numbers.

All guides
01 / QUANTITY

How much resin does a mold need?

Inside dimensions, actual depth and a complete 12-piece example.

Work out the volume 02 / MIXING

Weight and volume are different.

Choose the ratio basis that belongs to your exact product.

Understand the ratio

Resin calculator questions

Does the result include resin and hardener?

Yes. The total is the combined mixed volume. Part A and Part B are shown separately using your chosen ratio by volume.

Can I calculate an irregular mold?

Choose Known volume and enter a reliable cavity volume for one piece, before extra allowance. For example, six 80 mL cavities need 480 mL, or 528 mL with 10% extra. This mode accepts an amount you provide; it does not calculate irregular geometry. See the known-volume example.

Can I use grams instead of millilitres?

Use the mixing ratio calculator when you know the total weight and the manufacturer’s weight ratio. This mold tool does not guess density or turn a volume ratio into grams.

Does this choose a resin or recommend a pour depth?

No. It combines calculated or entered cavity volumes. Product suitability, maximum batch size, layer depth and cure conditions come from your exact product instructions.