This category holds the one ingredient GramToCup treats as a pure liquid reference point: Pure water, at 237g per US cup. Other liquid ingredients — milk, oils, honey, syrups — live in the categories that match how they're actually used in a recipe rather than being grouped here.
This category currently contains one ingredient — pure water — because GramToCup's taxonomy places other liquids (milk in Dairy, oils in Oils, honey and syrups in Sugars) in the category that best matches how they're used in a recipe.
Water is the reference liquid most other density comparisons on this site are measured against.
For other liquid ingredients, see the Dairy, Oils and Sugars categories below.
How each liquids ingredient converts at common gram amounts, lightest to heaviest.
| Ingredient | g / cup | 50g | 100g | 200g | 250g | 500g |
|---|---|---|---|---|---|---|
| Pure water | 237g | 0.21 cups | 0.42 cups | 0.84 cups | 1.05 cups | 2.11 cups |
Open any ingredient for its full density breakdown, quick conversion table, and measuring tips.
Water — and any liquid — is measured the same simple way:
Liquid Measuring Cup — Pure water
Use a liquid measuring cup — the kind with a spout and a pour line — rather than a dry measuring cup, and check the level at eye height for pure water.
Even for liquids, weight per cup isn't universal — water has its own density, and other liquids on this site (milk, oils, syrups) weigh more or less depending on what's dissolved or suspended in them.
GramToCup groups other liquids by how they’re used in a recipe rather than by physical state, which is why milk, oil and syrup live in their own categories instead of here.
Every conversion above uses the same data as the full calculator. Enter any gram amount for any ingredient in this category and get an instant cup conversion.
Use the Gram to Cup Calculator →100g of pure water is approximately 0.42 cups, based on a density of 237g per US cup.
Milk is listed under Dairy, cooking oils under Oils, and honey, maple syrup, corn syrup and agave nectar under Sugars — each is grouped with the ingredients it’s most often used alongside.
The value on this site is for pure water at standard conditions. It's a reliable, stable reference point since water doesn't vary with brand, humidity or packing the way dry ingredients do.