Are water and H2O the same thing?

Yes. H2O is another name for water, so they are the same ingredient and measure identically. A cup of water weighs 250 grams under either name, and every conversion on this page holds whichever name your recipe uses. Recipes swap the two freely, so you can follow either without changing quantities or weighing any differently.

What is 0.25 cups of water in tablespoons?

0.25 cups of water is 4.17 tablespoons. This is the same for any ingredient, since cups and tablespoons are both volume units and do not depend on what you are measuring. One cup is about 16.67 tablespoons, so 0.5 cups is 8.33 tablespoons. Use the volume converter to switch between cups, tablespoons, teaspoons, and millilitres for any amount.

How much does a cup of water weigh?

1 cup of water in grams is 250 grams. The ratio is fixed, so 2 cups is 500 grams and half a cup is 125 grams. Weighing water by the cup is the most common way to measure it for baking. See the full cup to grams chart for water, or use the converter on this page for any other amount.

Convert Water measurements

Water Measurement Converter

Use the tool below to convert water from the measurements in your recipe to the measurements that you need.

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

Enter a value and pick your units.

Convert from

Convert to

Result

Water Calculators & Baking Tools

Working with water? These tools handle the jobs a converter cannot.

Egg Substitute Calculator Swap eggs for water mixed with ground flaxseed or chia seeds.
Powdered Milk to Liquid Milk Calculator Work out how much powder and water make the milk your recipe needs.
Juice Yield Calculator Balance how much water to blend into a juice or smoothie.
Recipe Scaler Scale any recipe up or down and keep every ingredient in ratio.
Volume Converter Switch between cups, tablespoons, teaspoons and millilitres for any ingredient.
Weight Converter Switch between grams, ounces, pounds and kilograms for any ingredient.

Common Water Conversions

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

Millilitres	Cups
50 ml	0.2 cups
100 ml	0.4 cups
150 ml	0.6 cups
200 ml	0.8 cups
250 ml	1 cup
300 ml	1.2 cups
400 ml	1.6 cups
500 ml	2 cups

Water Conversion Chart

The conversion chart below gives a quick reference for converting water to different measurements.

grams	cup	ounces	lb	kg	cup(US)	tbsp	tsp	ml	fl oz
100 g	0.4 cup	3.53 oz	0.22 lb	0.1 kg	0.42 cup (US)	6.67 tbsp	20 tsp	100 ml	3.38 fl oz
150 g	0.6 cup	5.29 oz	0.33 lb	0.15 kg	0.63 cup (US)	10 tbsp	30 tsp	150 ml	5.07 fl oz
250 g	1 cup	8.82 oz	0.55 lb	0.25 kg	1.04 cup (US)	16.67 tbsp	50 tsp	250 ml	8.45 fl oz
500 g	2 cup	17.64 oz	1.1 lb	0.5 kg	2.08 cup (US)	33.33 tbsp	100 tsp	500 ml	16.91 fl oz
750 g	3 cup	26.46 oz	1.65 lb	0.75 kg	3.13 cup (US)	50 tbsp	150 tsp	750 ml	25.36 fl oz

Frequently Asked Questions

Are water and H2O the same thing?: Yes. H2O is another name for water, so they are the same ingredient and measure identically. A cup of water weighs 250 grams under either name, and every conversion on this page holds whichever name your recipe uses. Recipes swap the two freely, so you can follow either without changing quantities or weighing any differently.
What is 0.25 cups of water in tablespoons?: 0.25 cups of water is 4.17 tablespoons. This is the same for any ingredient, since cups and tablespoons are both volume units and do not depend on what you are measuring. One cup is about 16.67 tablespoons, so 0.5 cups is 8.33 tablespoons. Use the volume converter to switch between cups, tablespoons, teaspoons, and millilitres for any amount. Open the volume converter
How much does a cup of water weigh?: 1 cup of water in grams is 250 grams. The ratio is fixed, so 2 cups is 500 grams and half a cup is 125 grams. Weighing water by the cup is the most common way to measure it for baking. See the full cup to grams chart for water, or use the converter on this page for any other amount. 1 cup water in grams

Measurement Options

Choose from the following measurements to convert from

Other Ingredients

If you need help with any other ingredients click below: