2-Part Mix Ratio Calculator

Calculate weight and volume for 2-part silicone, epoxy, urethane, and polyurea systems

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Important Notes:

Weight vs. volume: Many 2-part materials specify ratios by weight OR volume. Using the wrong measurement type will result in an incorrect mix and poor cure. Always check the manufacturer’s TDS.
Measuring by weight is more accurate than measuring by volume, especially for small batches. Use a digital scale when possible.
Densities shown are typical published values. Actual density may vary by lot. Check your material’s Technical Data Sheet (TDS) for precise values.
Mix thoroughly and scrape sides/bottom of container. Incomplete mixing is the #1 cause of cure failures.