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Paint Mixing Ratio Calculator

Work out paint mixing ratio instantly with clear inputs, formula shown and shareable results.

About Paint Mixing Ratio Calculator

A paint ratio such as 4 : 1 : 1 divides the batch into six equal parts — four of base, one of hardener and one of thinner. Scaling by the required total volume gives each component.

Formula

Paint mix

component = total × part / (sum of all parts)

Worked example

With the default values below, Paint Mixing Ratio Calculator returns Base paint of 2.666667. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total paint requiredminimum 0 L
4 L
Base partsminimum 0
4
Hardener or tint partsminimum 0
1
Thinner partsminimum 0
1

Results

Base paint
2.666667 L
Hardener or tint
0.666667 L
Thinner
0.666667 L
Mix ratio
4 : 1 : 1

Step by step

  1. 1Values used
  2. 2Paint mix
  3. 3Base paint= 2.666667 L
  4. 4Hardener or tint= 0.666667 L
  5. 5Thinner= 0.666667 L
  6. 6Mix ratio= 4 : 1 : 1

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 6 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

4 litres at 4 : 1 : 1?

Six parts of 0.666667 L, so 2.6667 L base, 0.6667 L hardener and 0.6667 L thinner.

Does mixing order matter?

Yes in practice: add hardener to the base and stir before thinning, since thinner added first can hinder the catalytic reaction.

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