Saponification Value Calculator

Find SAP value from a fat's molar mass.

Saponification value (mg KOH/g) 190.17

Formula: SAP = (3 × 56,100) ÷ molar mass

Step-by-step with your numbers:

1. Values used:

2. Triglyceride molar mass = 885 g/mol

4. Saponification value = 190.17mg KOH/g

Did we solve your problem today?

The saponification value is the mg of KOH to saponify 1 g of fat.

The math behind it

SAP = (3 × 56,100) ÷ triglyceride molar mass (3 ester bonds per triglyceride; KOH = 56.1 g/mol).

MW 885 → ~190 mg KOH/g.

NaOH instead?

Replace 56,100 with 40,000 (NaOH = 40 g/mol).