MIX THE AMOUNT YOU ALREADY KNOW

Mixing ratio calculator

Split a known batch into Part A and Part B. Match the measurement basis on your exact product label.

Changing the basis clears the previous amount and ratio. Enter the values for the new measurement basis.

Ratio from your product instructions
:

Presets are arithmetic shortcuts, not product recommendations.

How the split works

Add the two ratio numbers. Part A is total × A ÷ (A + B); Part B is the remaining amount. Use one measurement basis throughout.

RatioTotal batchPart APart B
1:1 by weight200 g100 g100 g
2:1 by weight300 g200 g100 g
4:1 by weight500 g400 g100 g
100:43 by weight286 g200 g86 g
2:1 by volume150 mL100 mL50 mL

Need to find the total first?

The resin mold calculator works out liquid volume from cavity dimensions and piece counts. A volume ratio and a weight ratio may have different numbers; read the measurement guide before switching methods.