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coatcount.

Two parts. One clear calculation.

Paint mix ratios,
by volume.

Use the base:additive ratio stated for your product. Start with a desired combined volume or an amount of base you already have, then see each component and the arithmetic total.

Free · no account · Calculator arithmetic runs locally

A ratio is an instruction to interpret, not a recipe to invent. This calculator only divides two liquid volumes. It does not determine whether products can be mixed, which additive is suitable or whether a paint can be thinned. Use the current product label and technical directions.

1. What amount do you know?

The selected unit applies to the entered number. Changing the unit reinterprets that number; it does not convert it. Results also show component volumes in mL.

2. Your base : additive ratio

Order is always base first, additive second, by volume. Both parts use the same size measure. Zero additive is accepted for arithmetic; base parts must be above zero. Weight ratios and three-part recipes are outside this model.

Calculator code does not submit input values or save them automatically. Third-party advertising and traffic services operate separately; see Privacy.

Your volume plan

Keep the ratio order clear.

Enter the amount and both ratio parts, or load the labelled example. There are no preselected mixing ratios.

Parts are relative.

A 4:1 ratio has five parts altogether. For a 1,000 mL total, one part is 200 mL: 800 mL base plus 200 mL additive.

A percentage needs a base.

At 4:1, additive is 25% of base but 20% of the combined total. Those descriptions are not interchangeable.