This calculator converts rice uncooked between cup and g. The default example is 1 cup ≈ 198 g, using 198 g per US cup.
The default uses King Arthur Baking's “Rice (long grain, dry)” entry, scaled to 198 g per cup. The chart weights are rounded baking references, not exact densities.
Packing, grinding, moisture and brand can change the weight that fits in a cup. For repeatable baking, weigh the ingredient. US customary measures are used: 1 cup = 16 tablespoons = 48 teaspoons = 236.5882365 mL.
The formula
cups = grams ÷ grams per cup
grams per cup- The editable density and packing assumption
US cup- 236.5882365 mL; a US butter stick is treated as half a cup
How to use this calculator
- Enter the quantity in cup.
- Check or replace the grams-per-cup assumption.
- Convert the source quantity to grams, then from grams to the target unit.
Worked examples
Default assumption
1 cup gives about 198 g at 198 g per cup. Changing the weight assumption changes the answer.
Frequently asked questions
Why is the answer an estimate?
Volume measures space; mass measures weight. Converting between them requires ingredient density, and that changes with packing and preparation.
Are fluid ounces and ounces interchangeable?
No. A fluid ounce measures volume; an avoirdupois ounce measures mass. This calculator keeps the two units separate.
Reference values
| Source quantity | Estimated g at 198 g/cup |
|---|---|
| 0.5 cup | 99 |
| 1 cup | 198 |
| 2 cup | 396 |
| 5 cup | 990 |