Convert Water from Ounces to Grams

How many grams is 1 ounce of water?

1 ounce of water (H2O) is 28.34 grams. 2 ounces of water is 56.69 grams. 1/2 ounce of water is 14.17 grams. 1/4 ounce (0.25 ounce) of water is 7.09 grams. 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

Water Measurement Converter

Enter a value and pick your units.

Result

0 Grams

Common Water Conversions

Here are the most common water conversions from ounces to grams.

OuncesGrams
1 oz28.34 g
2 oz56.69 g
3 oz85.03 g
4 oz113.38 g
5 oz141.72 g
6 oz170.07 g
8 oz226.76 g
10 oz283.45 g
12 oz340.14 g

Water Conversion Chart

The conversion chart below gives a quick reference for converting water from Ounces to Grams and other measurements.

ouncesgramscupcup(US)tbsptspmlfl oz
2.5 oz70.86 g0.28 cup0.3 cup (US)4.72 tbsp14.17 tsp70.86 ml2.4 fl oz
5 oz141.72 g0.57 cup0.59 cup (US)9.45 tbsp28.34 tsp141.72 ml4.79 fl oz
7.5 oz212.59 g0.85 cup0.89 cup (US)14.17 tbsp42.52 tsp212.59 ml7.19 fl oz
10 oz283.45 g1.13 cup1.18 cup (US)18.9 tbsp56.69 tsp283.45 ml9.59 fl oz

Frequently Asked Questions

How many grams is 1 ounce of water?
1 ounce of water is 28.34 grams. The ratio is fixed, so 2 ounces of water is 56.69 grams and 0.5 ounces is 14.17 grams. 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 grams is 1.5 ounces of water?
1.5 ounces of water is 42.52 grams. The ratio is fixed, so 1 ounce of water is 28.34 grams and 2 ounces is 56.69 grams. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many grams is 2 ounces of water?
2 ounces of water is 56.69 grams. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 ounce of water is 28.34 grams, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact grams reading.
How many ounces of water is 28.34 grams?
28.34 grams of water is 1 ounce. The conversion works the same in reverse, so you can switch between grams and ounces without changing the result. This helps when a recipe lists ounces but you would rather weigh or measure in grams. The converter above and the chart below cover both directions for any amount.
How many grams is 1 ounce of H2O?
H2O is another name for water, so 1 ounce of H2O is 28.34 grams, exactly the same as water. The figure does not change with the name: 2 ounces is 56.69 grams and 0.5 ounces is 14.17 grams. 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 ounce of water is 28.34 grams under either name, and 2 ounces is 56.69 grams. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
How many grams is 1/2 ounce of water?
1/2 ounce of water is 14.17 grams. The ratio is fixed, so 1 ounce of water is 28.34 grams and 2 ounces is 56.69 grams. 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 grams is 1/4 ounce of water?
1/4 ounce (0.25 ounce) of water is 7.09 grams. The ratio is fixed, so 1 ounce of water is 28.34 grams and 2 ounces is 56.69 grams. 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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