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Metric Cup to Milliliter Converter

Enter a number of metric cups to convert to milliliters.

How it is calculated

The conversion is a single multiplication by a fixed definition: mL = cups × 250, since one metric cup is taken as exactly 250 mL. The litre figure is then L = mL / 1000. Milliliters are shown to 2 decimals and litres to 3. Fractions of a cup are fine (0.25 for a quarter cup), and the tool does no rounding to kitchen-friendly amounts, so 0.3 cups gives 75.00 mL. It converts only volume. It does not turn a cup of flour or sugar into grams, because that depends on the ingredient's density, and it does not convert US, UK imperial or Japanese cups, which are different sizes.

Worked example

A recipe calls for 1.5 metric cups of milk. Millilitres = 1.5 × 250 = 375.00 mL. In litres that is 375 / 1000 = 0.375 L. So you can measure it as 375 mL on a jug, or as three-quarters of a half-litre. If the same recipe were written in US cups, 1.5 of those would be about 355 mL, which is why mixing the two systems drifts the proportions.

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Common mistakes

  • Using this for a US recipe. A US cup is about 236.588 mL, so converting it as 250 mL adds roughly 6% extra liquid.
  • Treating a cup measure as a weight. 1 cup of flour is not 250 g; the tool converts volume to volume only, so weigh dry ingredients separately.
  • Confusing a metric cup with a tea cup or a mug. Only the 250 mL measuring cup matches this conversion.
  • Reading 0.375 L as 375 L. The litre result has three decimals, and the mL figure is the one to use on a measuring jug.
  • Entering tablespoons or teaspoons in the cups field. Convert them to a fraction of a cup first, or use a spoon converter.

About this calculator

The metric cup, used in Australia, New Zealand, the UK, and many international recipes, is defined as exactly 250 milliliters — a clean, round figure chosen specifically to make metric kitchen measurement simple, unlike the US customary cup, which equals about 236.588 mL. Because the two systems are close but not identical, a recipe written for one can quietly throw off ratios of liquid to dry ingredients if you assume they're interchangeable.

This calculator converts any number of metric cups into milliliters (and liters for larger volumes), so home cooks and bakers following recipes from a different measurement tradition can convert accurately rather than approximating. Home cooks adapting international recipes, bakers scaling batches, and recipe writers and food bloggers preparing metric versions of their instructions rely on it to keep proportions exact.

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Comments (1)

  • Editorial team

    Scaling is where this conversion helps most. 0.75 of a metric cup is 187.50 mL, and 4 cups come to exactly 1,000.00 mL, which is a litre jug. Measuring by millilitres on a jug is more consistent than a cup scoop for liquids. The tool converts volume only, so use grams for flour or sugar, and do not use it for US recipes. Which country's recipes are you converting from?

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