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Paint Mix Ratio Calculator

Volume of base, hardener, and reducer for a target ratio.

Compute the volume of each component (base, hardener, reducer) required to mix a target total volume of paint at a given ratio (base:hardener:reducer, e.g. 4:1:1 for automotive 2K paint).

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

oz

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Each component = total_volume · part / (parts_a + parts_b + parts_c).

In depth

Compute the volume of each component (base, hardener, reducer) required to mix a target total volume of paint at a given ratio (base:hardener:reducer, e.g. 4:1:1 for automotive 2K paint).