MixByParts

Paint mixing calculators

Enter the mixing ratio from your product’s technical sheet and the amount you need.

How many ingredients?

Paint + Hardener

Ratio parts · all required

Copy each number from your instructions. Use . or , for decimals.

Instructions say “4:1 + 10%”? Use the % calculator →

Enter a number in the selected unit. Decimal commas are accepted.

Use the product’s stated ratio and basis. Follow its mixing order, pot life and safety instructions.

Optional gram targets

Example only: 4:1:1 by volume, 600 mL total → 400 mL paint + 100 mL hardener + 100 mL reducer.

Help and sources

Can I calculate basecoat reduction?

Yes, when the technical sheet gives a two-part paint:reducer parts ratio: choose Reducer / thinner as the second ingredient. Use the stated measurement basis. Percentage additions are not entered directly in the ratio field.

Do I mix these paint ratios by volume or weight?

Choose the basis printed on the product’s technical sheet. Weight ratios use weight units directly. Optional gram targets for volume ratios require product densities.

Can I change the total batch size?

Enter a final mixture amount, or switch the starting point to an ingredient already measured. Two-part recipes contain only the two selected ingredients.

Where do the reducer and activator densities come from?

Optional gram targets use densities you supply from the exact product data. Leave them off for ordinary volume calculations.

How do I manage pot life and induction times?

Follow the exact technical sheet for induction time, pot life, batch limits, ventilation and required protection. A mixing ratio does not establish those requirements.

The exact product’s technical sheet is the authority for its ratio, measurement basis, mixing order and limits.

Browse 60 paint presets

Volume examples only. Match the ratio and basis to your exact product.