Convert Water from Cup (US) to Millilitres

How many millilitres is 1 US cup of water?

1 US cup of water (H2O) is 240 millilitres. 2 US cups of water is 480 millilitres. 1/2 US cup of water is 120 millilitres. 1/4 US cup (0.25 US cup) of water is 60 millilitres. Use the converter below for any amount.

Water is the most fundamental ingredient in cooking and baking. Used to hydrate doughs and batters, cook pasta and grains, make stocks and sauces, and dissolve ingredients, it appears in almost every recipe in some form. One metric cup (250 ml) of water weighs exactly 250 grams or 8.82 ounces — a clean, round number because the gram was originally defined as the mass of one millilitre of water.

Many recipes — particularly from the US — list water in cups or fluid ounces, while others use millilitres or grams. This page lets you convert water between grams, cups, millilitres, fluid ounces, and more so you can match any recipe with whatever measuring equipment you have.

Also known as

  • H2O
  • drinking water
  • tap water
  • filtered water

No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.

Water Measurement Converter

Enter a value and pick your units.

Result

0 Millilitres

Common Water Conversions

Here are the most common water conversions from cups (US) to millilitres.

Cups (US)Millilitres
0.25 cups (US)60 ml
0.5 cups (US)120 ml
0.75 cups (US)180 ml
1 cup (US)240 ml
1.25 cups (US)300 ml
1.5 cups (US)360 ml
2 cups (US)480 ml
2.5 cups (US)600 ml
3 cups (US)720 ml

Water Conversion Chart

The conversion chart below gives a quick reference for converting water from Cup (US) to Millilitres and other measurements.

cup(US)mlcupgramsouncestbsptspfl oz
0.25 cup (US)60 ml0.24 cup60 g2.12 oz4 tbsp12 tsp2.03 fl oz
0.5 cup (US)120 ml0.48 cup120 g4.23 oz8 tbsp24 tsp4.06 fl oz
1 cup (US)240 ml0.96 cup240 g8.47 oz16 tbsp48 tsp8.12 fl oz
2 cup (US)480 ml1.92 cup480 g16.93 oz32 tbsp96 tsp16.23 fl oz

Frequently Asked Questions

How many millilitres is 1 US cup of water?
1 US cup of water is 240 millilitres. The ratio is fixed, so 2 US cups of water is 480 millilitres and 0.5 US cups is 120 millilitres. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the water converter
How many millilitres is 1.5 US cups of water?
1.5 US cups of water is 360 millilitres. The ratio is fixed, so 1 US cup of water is 240 millilitres and 2 US cups is 480 millilitres. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many millilitres is 2 US cups of water?
2 US cups of water is 480 millilitres. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 US cup of water is 240 millilitres, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact millilitres reading.
How many US cups of water is 240 millilitres?
240 millilitres of water is 1 US cup. The conversion works the same in reverse, so you can switch between millilitres and US cups without changing the result. This helps when a recipe lists US cups but you would rather weigh or measure in millilitres. The converter above and the chart below cover both directions for any amount.
How many millilitres is 1 US cup of H2O?
H2O is another name for water, so 1 US cup of H2O is 240 millilitres, exactly the same as water. The figure does not change with the name: 2 US cups is 480 millilitres and 0.5 US cups is 120 millilitres. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are water and H2O the same thing?
Yes. H2O is another name for water, so they are the same ingredient and convert identically. 1 US cup of water is 240 millilitres under either name, and 2 US cups is 480 millilitres. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
How many millilitres is 1/2 US cup of water?
1/2 US cup of water is 120 millilitres. The ratio is fixed, so 1 US cup of water is 240 millilitres and 2 US cups is 480 millilitres. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart below for the common ones.
How many millilitres is 1/4 US cup of water?
1/4 US cup (0.25 US cup) of water is 60 millilitres. The ratio is fixed, so 1 US cup of water is 240 millilitres and 2 US cups is 480 millilitres. Quarter amounts often come up when scaling a recipe down step by step, and the figure divides cleanly. Use the converter above for any other quantity, or the chart below for the most common amounts.

Other Ingredients

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