1 Cup Oil in Grams
1 cup of oil weighs:
218 g
US cup (240 ml)
227 g
Metric / AU cup (250 ml)
American recipes mean the 240 ml cup; Australian, British and New Zealand recipes mean the 250 ml metric cup. If the recipe does not say, the cuisine usually tells you — see the full cups to grams guide.
A cup of vegetable or olive oil is about 218 g — lighter than water, which is exactly why oil floats. Oil is easy to measure accurately by volume since it pours cleanly and does not compact.
Oil (vegetable / olive) cup to gram chart
| Cups | US (240 ml) | Metric (250 ml) |
|---|---|---|
| ¼ cup | 55 g | 57 g |
| ⅓ cup | 73 g | 76 g |
| ½ cup | 109 g | 114 g |
| ⅔ cup | 145 g | 151 g |
| ¾ cup | 164 g | 170 g |
| 1 cup | 218 g | 227 g |
| 1½ cups | 327 g | 341 g |
| 2 cups | 436 g | 454 g |
Convert any amount
Quick converter
Convert cups, grams, millilitres and oven temperatures — instantly, right here.
= 125 g
Frequently asked questions
How many grams is 1 cup of oil?
1 US cup of oil is 218 g. In an Australian, UK or NZ metric cup (250 ml) it is 227 g. Weighing is more accurate than measuring by volume.
How many grams is half a cup of oil?
Half a US cup of oil is 109 g, and three-quarters of a cup is 164 g.
Why is oil lighter than water?
Oil is less dense — roughly 0.91 g per ml against water's 1.00. That density difference is what makes oil float on water and separate out of a vinaigrette.
Do olive oil and vegetable oil weigh the same?
Near enough. All common cooking oils sit between 0.90 and 0.92 g per ml, so a cup is 216–221 g whichever you use. Recipes never distinguish them by weight.