Butter to Oil Converter

A butter-to-oil converter helps bakers substitute oil for butter. Because butter is ~80% fat and oil is 100% fat, you use ¾ the amount of oil when replacing butter

The calculator uses the standard published formula for butter-to-oil. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Oil = Butter × 0.75 (use less oil). Each step in the calculation is shown so you can verify the result manually.