Fats & Oils
Convert ounces of olive oil to cups
One ounce of olive oil weighs about 0.131 cup, and half a ounce comes to roughly 0.066 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of olive oil =
0.131 cup
About 1/8 cup in recipe notation
- ml
- 31.1
- tbsp
- 2.1
Olive Oil: 216 g per US cup · USDA FoodData Central. Extra virgin and refined olive oil have effectively the same density at room temperature.
Full olive oil chart →Olive Oil at a glance
Every number on this page comes from a single figure: 216 grams per US cup (USDA FoodData Central).
- 1 cup
- 216 g
- 1 tablespoon
- 13.5 g
- 1 teaspoon
- 4.5 g
- 1 cup in ounces
- 7.62 oz
- 100 g in cups
- 0.463 cups
- Density
- 0.91 g/ml
ounces to cups chart for olive 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 | 0.066 cup | 1.05 tbsp | 15.5 ml |
| 1 oz | 0.131 cup | 2.1 tbsp | 31.1 ml |
| 2 oz | 0.262 cup | 4.2 tbsp | 62.1 ml |
| 3 oz | 0.394 cup | 6.3 tbsp | 93.2 ml |
| 4 oz | 0.525 cup | 8.4 tbsp | 124 ml |
| 5 oz | 0.656 cup | 10.5 tbsp | 155 ml |
| 6 oz | 0.787 cup | 12.6 tbsp | 186 ml |
| 8 oz | 1.05 cup | 16.8 tbsp | 248 ml |
| 12 oz | 1.57 cup | 25.2 tbsp | 373 ml |
| 16 oz | 2.1 cup | 33.6 tbsp | 497 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat olive oil as 216 g per US customary cup, which works out to 0.913 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 olive oil accurately
Extra virgin and refined olive oil have effectively the same density at room temperature.
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 olive oil?
1 ounce of olive oil is 0.131 cup. This is based on a density of 216 g per US cup.
How many cups are in 2 ounces of olive oil?
2 ounces of olive oil is 0.262 cup, and 0.066 cup for half a ounce.
How much is 100 g of olive oil in cups?
100 g of olive 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 olive oil?
Extra virgin and refined olive oil have effectively the same density at room temperature.
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.