Neutral flavour
Vegetable oil adds little flavour, so butter makes the finished bake richer and more aromatic.
The everyday baking substitution
Vegetable oil is neutral and almost entirely fat, which makes it the cleanest baseline for this conversion. Choose Exact when structure matters and Quick for routine baking.
One US cup of vegetable oil weighs about 218 g and needs 272.5 g butter to carry the same fat.
273 g
| Formula | 218 g × 1 fat ÷ 0.8 fat = 272.5 g |
|---|---|
| Source | 218 g · 218 g fat |
| Result | 272.5 g · 218 g fat |
| Ratio | ×1.25 |
Common amounts
| Source | Quick | Exact | Exact grams |
|---|---|---|---|
| ⅛ cup | 35.5 g | 34.1 g | 34.06 g |
| ¼ cup | 70.9 g | 68.1 g | 68.13 g |
| ⅓ cup | 94.6 g | 90.8 g | 90.83 g |
| ½ cup | 142 g | 136 g | 136.25 g |
| ⅔ cup | 189 g | 182 g | 181.67 g |
| ¾ cup | 213 g | 204 g | 204.38 g |
| 1 cup | 284 g | 273 g | 272.5 g |
| 1½ cups | 426 g | 409 g | 408.75 g |
| 2 cups | 568 g | 545 g | 545 g |
What matters in the kitchen
Vegetable oil adds little flavour, so butter makes the finished bake richer and more aromatic.
Butter firms as it cools; oil stays fluid, so the crumb and keeping quality will change.
Use melted and slightly cooled butter when the recipe originally pours in oil.
Questions about this tool
One US cup of vegetable oil weighs about 218 g and needs 272.5 g butter to carry the same fat.
For recipes that cream fat with sugar, conversion alone cannot reproduce the air incorporated by softened butter.
Vegetable oil adds little flavour, so butter makes the finished bake richer and more aromatic.