Oil to Butter Converter

Oil to Butter Substitution Ratio

When baking, liquid oil and butter are not a 1:1 swap. A common kitchen ratio is 3 parts oil to 4 parts butter by volume. That keeps fat levels similar while accounting for butter's water content. See also the Butter Calculator and Cooking Measurement Converter.

Conversion Formulas

$$\text{butter} = \text{oil} \times \frac{4}{3}$$

$$\text{oil} = \text{butter} \times \frac{3}{4}$$

For coconut oil swaps, multiply butter grams by 0.80 or butter volume by 0.75 because coconut oil is less dense than butter.

Example

If a cake calls for 1/2 cup of oil, use about 2/3 cup of butter instead. If a recipe lists 1 cup of butter, substitute about 3/4 cup of liquid oil.