Liquids
Convert ounces of soy sauce to cups
One ounce of soy sauce weighs about 0.111 cup, and half a ounce comes to roughly 0.056 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of soy sauce =
0.111 cup
About 1/8 cup in recipe notation
- ml
- 26.3
- tbsp
- 1.78
Soy Sauce: 255 g per US cup · USDA FoodData Central. The high salt content makes soy sauce denser than water. Light and dark soy differ only slightly.
Full soy sauce chart →Soy Sauce at a glance
Every number on this page comes from a single figure: 255 grams per US cup (USDA FoodData Central).
- 1 cup
- 255 g
- 1 tablespoon
- 15.9 g
- 1 teaspoon
- 5.31 g
- 1 cup in ounces
- 8.99 oz
- 100 g in cups
- 0.392 cups
- Density
- 1.08 g/ml
ounces to cups chart for soy sauce
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 | 0.056 cup | 0.889 tbsp | 13.2 ml |
| 1 oz | 0.111 cup | 1.78 tbsp | 26.3 ml |
| 2 oz | 0.222 cup | 3.56 tbsp | 52.6 ml |
| 3 oz | 0.334 cup | 5.34 tbsp | 78.9 ml |
| 4 oz | 0.445 cup | 7.12 tbsp | 105 ml |
| 5 oz | 0.556 cup | 8.89 tbsp | 132 ml |
| 6 oz | 0.667 cup | 10.7 tbsp | 158 ml |
| 8 oz | 0.889 cup | 14.2 tbsp | 210 ml |
| 12 oz | 1.33 cup | 21.3 tbsp | 316 ml |
| 16 oz | 1.78 cup | 28.5 tbsp | 421 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat soy sauce as 255 g per US customary cup, which works out to 1.078 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 soy sauce accurately
The high salt content makes soy sauce denser than water. Light and dark soy differ only slightly.
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 soy sauce?
1 ounce of soy sauce is 0.111 cup. This is based on a density of 255 g per US cup.
How many cups are in 2 ounces of soy sauce?
2 ounces of soy sauce is 0.222 cup, and 0.056 cup for half a ounce.
How much is 100 g of soy sauce in cups?
100 g of soy sauce 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 soy sauce?
The high salt content makes soy sauce denser than water. Light and dark soy differ only slightly.
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.