# Oil to Butter Conversion Calculator

URL: https://speedycalculator.com/calculators/food/oil-to-butter/
Last updated: 2026-10-30

> The oil to butter calculator converts between liquid vegetable or olive oil and butter in baking and cooking – 3 parts oil for 4 parts butter – and works out the coconut oil equivalent of butter.

## Inputs

- Convert
- Amount (cups, ml, tbsp, tsp, fl oz, L)

## Results

- Result
- Result by weight
- Result ingredient

## Formula

```
Butter = oil × 4 ÷ 3; oil = butter × 3 ÷ 4
Butter is about 80% fat and 16–18% water
Coconut oil = butter × 0.8 by weight (× 0.75 by volume)
```

## Explanation

Because butter contains water and milk solids, you need less oil than butter. Oil makes cakes moister but less fluffy; butter gives flavour and structure. Swapping works best in quick breads, muffins and brownies.

### How to use the Oil to Butter Conversion Calculator

- **Convert**
- **Amount**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Choose the direction, enter the amount and its unit.

### Inputs explained

FieldWhat to enterConvertChoose one: Oil → butter, Butter → oil, Butter → coconut oilAmountUnits: cups, ml, tbsp, tsp, fl oz, L

### Example values

How the main result changes when **Amount** changes and everything else stays at the example values above:

Amount (cups)Result (cups)0.3750.50.56250.750.7510.93751.251.131.51.52

## Worked example

Inputs — Convert: Oil → butter; Amount: 0.75 cups.

Results — **Result = 1 cups**; Result by weight = 226.9 g; Result ingredient = Butter.

## FAQ

**How much oil replaces 1 cup of butter?**
¾ cup of oil.

**How much butter replaces ½ cup of oil?**
About ⅔ cup (10⅔ tbsp) of butter.

**Can I replace butter with coconut oil?**
Yes – about 80% of the butter's weight, or ¾ of its volume.