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AI Calculator

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Food & Cooking

Rice Cooking Water Calculator.

Estimates the water volume and total pot weight needed to cook rice based on rice type, dry rice weight, and cooking method.

Results update live as you type.
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Your inputs

How it works

  1. 1

    Weigh the dry rice in grams.

  2. 2

    Pick the rice type and cooking method.

  3. 3

    Multiply the rice weight by the matching water ratio.

  4. 4

    Convert millilitres to litres by dividing by 1000.

rice_weight * (method == 'pasta' ? 10 : (rice_type == 'brown' ? 2.5 : (rice_type == 'wild' ? 3 : (rice_type == 'short_grain' ? 1.2 : (rice_type == 'basmati' ? 1.5 : (rice_type == 'jasmine' ? 1.4 : 1.6)))))) / 1000

Frequently asked questions

Why does brown rice need more water?

Brown rice keeps its bran layer, which slows water absorption, so it typically needs about 2.5 times its weight in water versus 1.2 to 1.6 for white rice.

What does the pasta method mean?

Boiling in a large pot of water and draining, like pasta. It uses roughly 10 times the rice weight in water, so the result is much larger.

Should I adjust for altitude or soaking?

Yes. At high altitude water evaporates faster, so add 10 to 15 percent. Pre-soaked rice can use about 10 percent less water.

Results

Formula checked

Water needed

0.32L

Water in cups (240 ml)1.33cups
Approx. cooked rice yield500g
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AI-generated estimate for general guidance only — not professional advice.

How it works

Estimates the water volume and total pot weight needed to cook rice based on rice type, dry rice weight, and cooking method.

  1. Weigh the dry rice in grams.
  2. Pick the rice type and cooking method.
  3. Multiply the rice weight by the matching water ratio.
  4. Convert millilitres to litres by dividing by 1000.

Formulas

The math behind this calculator, written out so you can verify the result.

Absorption water ratio

Water (ml) = rice weight (g) × ratio

Each rice type has a typical water-to-rice ratio by weight for the absorption method.

Example:

Input: 200 g basmati, ratio 1.5

Calculation: 200 × 1.5

Result: 300 ml (0.30 L)

Pasta method

Water (ml) = rice weight (g) × 10

Drained cooking uses a large excess of water, so the ratio is much higher.

Example:

Input: 500 g brown rice

Calculation: 500 × 10

Result: 5000 ml (5.00 L)

Real-world use cases

Where this calculation shows up in everyday life.

Weeknight dinner

Scale water precisely for a small pot of rice without guessing.

Example: 200 g jasmine rice needs about 0.28 L.

Meal prep batches

Calculate water for large batches cooked in a rice cooker or stockpot.

Example: 1 kg long grain rice needs about 1.6 L.

Specialty rice

Get the right ratio for basmati, sushi rice, or wild rice blends.

Example: Wild rice needs about 3 times its weight in water.

Tips and common mistakes

Tips

  • Rinse white rice until the water runs clear to remove surface starch.
  • Bring water to a boil, then reduce to a simmer and keep the lid on.
  • Let rice rest off the heat for 5 to 10 minutes before fluffing.
  • Add a pinch of salt, about 1 percent of the rice weight.

Common Mistakes to Avoid

  • Measuring rice by volume in a cup instead of weighing it, which varies a lot.
  • Using the same ratio for brown and white rice.
  • Stirring constantly, which makes the rice gummy.