What this calculator does
Oil to butter converter works out converts a recipe quantity between cooking oil and butter using the standard baking ratio. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaButter = oil × 4/3; Oil = butter × 3/4 (the standard fat-to-fat baking substitution ratio)
The inputs explained
| Field | What to enter |
|---|---|
| Amount | A number. Starts at 1. |
| Convert | Choose from Oil to butter, Butter to oil. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with amount
Every other input is held at the calculator’s starting values while amount varies. Select any row to load that scenario into the calculator.
How the answer changes with amount
| Amount | Butter needed | Ratio applied | Note |
|---|---|---|---|
| 0.5 | 0.667 (same unit as entered) | × 4/3 | Ratio is for liquid cooking oils; coconut oil converts at roughly 0.8 by weight instead |
| 0.75 | 1.000 (same unit as entered) | × 4/3 | Ratio is for liquid cooking oils; coconut oil converts at roughly 0.8 by weight instead |
| 1 | 1.333 (same unit as entered) | × 4/3 | Ratio is for liquid cooking oils; coconut oil converts at roughly 0.8 by weight instead |
| 1.5 | 2.000 (same unit as entered) | × 4/3 | Ratio is for liquid cooking oils; coconut oil converts at roughly 0.8 by weight instead |
| 2 | 2.667 (same unit as entered) | × 4/3 | Ratio is for liquid cooking oils; coconut oil converts at roughly 0.8 by weight instead |
| 3 | 4.000 (same unit as entered) | × 4/3 | Ratio is for liquid cooking oils; coconut oil converts at roughly 0.8 by weight instead |