Flours & Starches
Convert ounces of rice flour to cups
One ounce of rice flour weighs about 0.179 cup, and half a ounce comes to roughly 0.09 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 oz of rice flour =
0.179 cup
About 1/8 cup in recipe notation
- ml
- 42.5
- tbsp
- 2.87
Rice Flour: 158 g per US cup · FAO / INFOODS density database. Rice flour is fine and free-flowing, so it settles into a cup much more densely than wheat flour.
Full rice flour chart →Rice Flour at a glance
Every number on this page comes from a single figure: 158 grams per US cup (FAO / INFOODS density database).
- 1 cup
- 158 g
- 1 tablespoon
- 9.88 g
- 1 teaspoon
- 3.29 g
- 1 cup in ounces
- 5.57 oz
- 100 g in cups
- 0.633 cups
- Density
- 0.67 g/ml
ounces to cups chart for rice flour
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 | 0.09 cup | 1.44 tbsp | 21.2 ml |
| 1 oz | 0.179 cup | 2.87 tbsp | 42.5 ml |
| 2 oz | 0.359 cup | 5.74 tbsp | 84.9 ml |
| 3 oz | 0.538 cup | 8.61 tbsp | 127 ml |
| 4 oz | 0.718 cup | 11.5 tbsp | 170 ml |
| 5 oz | 0.897 cup | 14.4 tbsp | 212 ml |
| 6 oz | 1.08 cup | 17.2 tbsp | 255 ml |
| 8 oz | 1.44 cup | 23 tbsp | 340 ml |
| 12 oz | 2.15 cup | 34.4 tbsp | 509 ml |
| 16 oz | 2.87 cup | 45.9 tbsp | 679 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat rice flour as 158 g per US customary cup, which works out to 0.668 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 5/8 cups.
Measuring rice flour accurately
Rice flour is fine and free-flowing, so it settles into a cup much more densely than wheat flour.
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 rice flour?
1 ounce of rice flour is 0.179 cup. This is based on a density of 158 g per US cup.
How many cups are in 2 ounces of rice flour?
2 ounces of rice flour is 0.359 cup, and 0.09 cup for half a ounce.
How much is 100 g of rice flour in cups?
100 g of rice flour is about 5/8 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 rice flour?
Rice flour is fine and free-flowing, so it settles into a cup much more densely than wheat flour.
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.