Paint batch mixing calculator
Enter a total weight and three parts. The calculator splits the total into grams for each part using the ratio you set.
This tool does arithmetic only. It does not predict colour, pigment compatibility, paint coverage, drying time or toxicity. The total must be from 0.001 g to 1000000 g and must be a multiple of 0.001 g. Each part must be a plain number from 0 to 1000000 with up to 6 decimal places, and the sum of the parts must be more than zero. Exponent notation such as 1e5 is not accepted. Blank values are rejected. Parts are allocated in 0.001 g units so the grams always add up to the total.
Hypothetical demonstration: with a total of 30 g and parts A = 1, B = 2, C = 0, the result is 10 g, 20 g and 0 g.