How much does rice expand when cooked?

Rice typically expands to 2.5-3 times its dry volume when cooked. One cup of dry rice yields about 3 cups cooked.

What is a rice cooker cup?

A Japanese rice cooker cup is 180 mL (about 3/4 of a US cup). This is smaller than a standard US cup of 236.6 mL.

How much rice per person?

A standard serving is about 75-90 g dry rice per person (roughly 1/2 cup dry), yielding about 190-225 g cooked.

Rice Cups to Grams Converter

Convert cups of dry rice to grams. Different rice varieties have different weights per cup.

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Cups of Rice (dry)

cups

Rice Type

Dry Rice Weight

185 g

Approx. Cooked Weight463 g

Servings (150 g cooked)3.1 servings

View formula & how it works →

How to Convert Rice Cups to Grams

Formula

Grams = Cups x Rice Density (g/cup)

Rice roughly triples in volume and weighs about 2.5x when cooked.

Rice Expansion

1 cup dry rice produces about 2.5-3 cups cooked rice

1 cup dry (185 g) yields roughly 460-555 g cooked

Example Calculation

Convert 1 cup of dry long grain white rice to grams.

01Long grain white rice density: 185 g per cup.
02Dry weight: 1 x 185 = 185 g.
03Approximate cooked weight: 185 x 2.5 = 462.5 g.
04Servings at 150 g each: 462.5 / 150 = 3.1 servings.

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