Rice Cups to Grams Converter Formula

Understand the math behind the rice cups to grams converter. Each variable explained with a worked example.

Use the Rice Cups to Grams Converter

Formulas Used

Dry Rice Weight

grams = cups * rice_density

Approx. Cooked Weight

cooked_grams = cups * rice_density * 2.5

Servings (150 g cooked)

servings = (cups * rice_density * 2.5) / 150

Variables

VariableDescriptionDefault
cupsCups of Rice (dry)(cups)1
rice_densityRice Type185

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

    • Worked Example

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

    cups = 1rice_density = 185
    1. 01Long grain white rice density: 185 g per cup.
    2. 02Dry weight: 1 x 185 = 185 g.
    3. 03Approximate cooked weight: 185 x 2.5 = 462.5 g.
    4. 04Servings at 150 g each: 462.5 / 150 = 3.1 servings.

    Frequently Asked Questions

    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.

    Ready to run the numbers?

    Open Rice Cups to Grams Converter