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Cooking Calculators

Rice Water Ratio Calculator

Verified formula Updated Jun 2026 Private — runs on your device

Enter details
cups
Verified formula Private

Water needed

4.00

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Rice Water Ratio Calculator

The Rice Water Ratio Calculator works out your water needed in an instant. Enter rice and water per cup of rice and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the rice.
  2. Enter the water per cup of rice.
  3. Read off your water needed — the calculator updates automatically, with no button to press.

Formula

The Rice Water Ratio Calculator uses the formula:

Water needed = Rice × Water per cup of Rice

Worked example

For example, with rice of 2 cups and water per cup of rice of 2, the water needed is 4.00.

Inputs used
Rice 2 cups
Water per cup of rice 2
Results
Water needed 4.00

Results are estimates for educational use, not professional advice.

Key terms explained

Ratio
A comparison of two quantities showing how many times one contains the other.

Frequently asked questions

A common ratio is 2 cups of water per cup of rice. For 2 cups of rice at a 2:1 ratio, use 4 cups of water.

Yes. White rice is often around 2:1, basmati closer to 1.5:1, and brown rice needs more water, around 2.5:1.

Rinsing removes surface starch and a little water clings to the grains, so you may slightly reduce the added water.

Yes. The same ratio applies, though some cookers have fill lines. Adjust to taste after your first batch.

The Rice Water Ratio Calculator uses the formula: Water needed = Rice × Water per cup of Rice. For example, with rice of 2 cups and water per cup of rice of 2, the water needed is 4.00.

Enter the rice. Enter the water per cup of rice. Read off your water needed — the calculator updates automatically, with no button to press.

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