Paint Mix Calculator — Precise Colour Ratios

Note the exact ratio (e.g. 3:1:0.5) and the paint brand and colour names. Enter the ratio here with your required total volume and the calculator gives you the precise amount of each colour. Always mix more than you think you need — running out mid-paint is difficult to fix.

Millilitres (ml) work best for model paints. A standard Vallejo dropper bottle is 17ml, a Tamiya jar is 10ml, and a Citadel pot is 12ml. Most model mixes need only 2-5ml total depending on the model size.

You can usually mix paints within the same chemistry type — acrylics with acrylics, enamels with enamels. Mixing brands with different bases (e.g. water-based acrylic with solvent-based acrylic) may cause separation or poor adhesion.

Use a graduated mixing cup, pipettes, or count drops from dropper bottles. A single drop from a Vallejo bottle is approximately 0.05ml. For a 3:1 mix, use 3 drops of one colour and 1 drop of the other.