Fats & Oils
Convert ounces of vegetable oil to cups
One ounce of vegetable oil weighs about 0.13 cup, and half a ounce comes to roughly 0.065 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of vegetable oil =
0.13 cup
About 1/8 cup in recipe notation
- ml
- 30.8
- tbsp
- 2.08
Vegetable Oil: 218 g per US cup · USDA FoodData Central. All neutral cooking oils sit around 0.92 g/ml, so canola, sunflower and corn oil can be treated as interchangeable by weight.
Full vegetable oil chart →Vegetable Oil at a glance
Every number on this page comes from a single figure: 218 grams per US cup (USDA FoodData Central).
- 1 cup
- 218 g
- 1 tablespoon
- 13.6 g
- 1 teaspoon
- 4.54 g
- 1 cup in ounces
- 7.69 oz
- 100 g in cups
- 0.459 cups
- Density
- 0.92 g/ml
ounces to cups chart for vegetable oil
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Ounces (weight) | Cups (US) | Tablespoons (US) | Millilitres |
|---|---|---|---|
| 0.5 oz | 0.065 cup | 1.04 tbsp | 15.4 ml |
| 1 oz | 0.13 cup | 2.08 tbsp | 30.8 ml |
| 2 oz | 0.26 cup | 4.16 tbsp | 61.5 ml |
| 3 oz | 0.39 cup | 6.24 tbsp | 92.3 ml |
| 4 oz | 0.52 cup | 8.32 tbsp | 123 ml |
| 5 oz | 0.65 cup | 10.4 tbsp | 154 ml |
| 6 oz | 0.78 cup | 12.5 tbsp | 185 ml |
| 8 oz | 1.04 cup | 16.6 tbsp | 246 ml |
| 12 oz | 1.56 cup | 25 tbsp | 369 ml |
| 16 oz | 2.08 cup | 33.3 tbsp | 492 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat vegetable oil as 218 g per US customary cup, which works out to 0.921 g/ml. From there:
- Your ounces figure is converted into millilitres or grams using standard unit sizes (oz = 28.3 g).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 1/2 cups.
Measuring vegetable oil accurately
All neutral cooking oils sit around 0.92 g/ml, so canola, sunflower and corn oil can be treated as interchangeable by weight.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many cups are in 1 ounce of vegetable oil?
1 ounce of vegetable oil is 0.13 cup. This is based on a density of 218 g per US cup.
How many cups are in 2 ounces of vegetable oil?
2 ounces of vegetable oil is 0.26 cup, and 0.065 cup for half a ounce.
How much is 100 g of vegetable oil in cups?
100 g of vegetable oil is about 1/2 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for vegetable oil?
All neutral cooking oils sit around 0.92 g/ml, so canola, sunflower and corn oil can be treated as interchangeable by weight.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.