How Cooking Works

Rice Calculator

Portion calculator

Rice Calculator

Work out how much dry rice and water to use for any number of servings.

Calculate rice and water

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COSORI 10-cup rice cooker with digital controls and ceramic-coated inner pot

Recommended rice cooker

COSORI 10-Cup Rice Cooker

This 18-in-1 fuzzy-logic cooker has dedicated settings for white, brown, long-grain and medium or short-grain rice, plus a ceramic-coated inner pot. A useful option when you cook rice regularly or need a larger batch.

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Rice portions and water ratios

The calculator starts with ¼ cup (about 45 grams) of dry rice per person. That is a moderate side-dish portion. Increase it when rice is the center of the meal or when you want leftovers.

RiceStarting water ratioFor 4 servings
Long-grain white1 cup rice : 1½ cups water1 cup rice + 1½ cups water
Jasmine1 : 1¼1 cup rice + 1¼ cups water
Basmati1 : 1½1 cup rice + 1½ cups water
Brown1 : 1¾1 cup rice + 1¾ cups water

Why your pot may need a different amount

These ratios are useful starting points for stovetop cooking, not universal laws. A wide pot loses more steam than a narrow one. A loose lid allows more evaporation. Soaking lets grains absorb water before cooking, and some rice varieties are milled or aged differently. Use the package directions when they differ.

A reliable stovetop method

  1. Measure the rice and water accurately.
  2. Rinse if the recipe or rice style calls for it, then drain well.
  3. Bring to a boil, cover, reduce to the lowest steady heat and avoid lifting the lid.
  4. When the water is absorbed, remove from heat and rest covered for 10 minutes.
  5. Fluff with a fork and evaluate before changing the ratio next time.

Common fixes

Hard rice: add a small splash of hot water, cover and cook gently for a few more minutes. Mushy rice: use slightly less water next time and avoid stirring. Scorched bottom: lower the burner or use a heavier pot.

Frequently asked questions

How much dry rice makes one cooked cup?
A practical estimate is about ⅓ cup dry rice for 1 cup cooked, although variety and method change the final volume.
Should I rinse rice?
Rinsing removes loose surface starch and can make grains less sticky. Follow the style of rice and the result you want.
Does doubling rice mean doubling cooking time?
Usually no. The amount of water scales, but cooking time often changes only modestly. Use doneness and absorbed water as the final checks.