Cups to Grams Rice Converter
Convert cups of rice to grams, or grams to cups, using a stated ingredient preparation and approximate portion weight with US or 250 mL metric cups.
Estimate grams from a measured cup of rice, with separate reference weights for raw and cooked states. The USDA household portions used here describe long-grain rice; they do not establish a universal weight for every variety or cooking method. Reverse conversion uses the same selected state and cup size.
How to use this tool
- Select cups to grams or grams to cups and enter the quantity.
- Choose raw white, cooked white or cooked brown long-grain rice.
- Select US customary or 250 mL metric cups.
- Check the state and mass-per-cup assumption shown with the answer.
Formula
Grams = cups × state-specific US-cup mass × selected cup mL / 236.5882365; cups = grams / selected-cup mass
Reference weights are 185 g for raw enriched white long-grain rice, 158 g for its cooked counterpart and 195 g for cooked brown long-grain rice. Metric estimates assume the same bulk density in a 250 mL cup.
Example
2 US customary cups of raw white long-grain rice are estimated as 2 × 185 = 370 g. Separately, 2 US cups of cooked white rice use 2 × 158 = 316 g. These describe different measured portions, not the transformation of one batch during cooking.
Frequently asked questions
Will 185 g of raw rice cook down to 158 g?
No. The figures describe the mass in one cup of each state. They are not a cooking yield ratio. Absorbed water and the resulting volume depend on the rice and cooking procedure.
Can I use the cup supplied with my rice cooker?
Only if its marked capacity matches a supported cup selection. Rice-cooker cups may use another capacity. Do not assume that a manufacturer’s scoop is a US customary or 250 mL metric cup.
Does this cover short-grain or sticky rice?
No specific reference for those types is included. Grain shape, moisture, clumping and how firmly rice is placed in the cup affect its bulk weight. Use a product-specific measurement or a scale.
Does the tool calculate water or calories?
No. It converts measured portions using the selected state. Cooking water, cooking time and nutritional composition require separate information; the recipe-calorie tool uses energy data that you supply.
Sources
Last updated: 2026-10-30