Pantry & Condiments
Convert ounces of tomato paste to cups
One ounce of tomato paste weighs about 0.108 cup, and half a ounce comes to roughly 0.054 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of tomato paste =
0.108 cup
About 1/8 cup in recipe notation
- ml
- 25.6
- tbsp
- 1.73
Tomato Paste: 262 g per US cup · USDA FoodData Central. One standard 6 oz can is about 2/3 cup. 1 tablespoon is roughly 16 g.
Full tomato paste chart →Tomato Paste at a glance
Every number on this page comes from a single figure: 262 grams per US cup (USDA FoodData Central).
- 1 cup
- 262 g
- 1 tablespoon
- 16.4 g
- 1 teaspoon
- 5.46 g
- 1 cup in ounces
- 9.24 oz
- 100 g in cups
- 0.382 cups
- Density
- 1.11 g/ml
ounces to cups chart for tomato paste
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 | 0.054 cup | 0.866 tbsp | 12.8 ml |
| 1 oz | 0.108 cup | 1.73 tbsp | 25.6 ml |
| 2 oz | 0.216 cup | 3.46 tbsp | 51.2 ml |
| 3 oz | 0.325 cup | 5.19 tbsp | 76.8 ml |
| 4 oz | 0.433 cup | 6.93 tbsp | 102 ml |
| 5 oz | 0.541 cup | 8.66 tbsp | 128 ml |
| 6 oz | 0.649 cup | 10.4 tbsp | 154 ml |
| 8 oz | 0.866 cup | 13.9 tbsp | 205 ml |
| 12 oz | 1.3 cup | 20.8 tbsp | 307 ml |
| 16 oz | 1.73 cup | 27.7 tbsp | 410 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat tomato paste as 262 g per US customary cup, which works out to 1.107 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 3/8 cups.
Measuring tomato paste accurately
One standard 6 oz can is about 2/3 cup. 1 tablespoon is roughly 16 g.
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 tomato paste?
1 ounce of tomato paste is 0.108 cup. This is based on a density of 262 g per US cup.
How many cups are in 2 ounces of tomato paste?
2 ounces of tomato paste is 0.216 cup, and 0.054 cup for half a ounce.
How much is 100 g of tomato paste in cups?
100 g of tomato paste is about 3/8 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 tomato paste?
One standard 6 oz can is about 2/3 cup. 1 tablespoon is roughly 16 g.
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.