Grams to cups for milk or water
One US cup of milk or water weighs about 240 g, so 100 g is about 0.42 cups (3/8 cup). Close to 1 g per millilitre. The calculator and table below use this figure for any amount.
Conversion table
| Grams | Cups | Closest kitchen measure |
|---|---|---|
| 25 g | 0.1 | 1/8 cup |
| 50 g | 0.21 | 1/6 cup |
| 75 g | 0.31 | 1/3 cup |
| 100 g | 0.42 | 3/8 cup |
| 125 g | 0.52 | 1/2 cup |
| 150 g | 0.63 | 5/8 cup |
| 200 g | 0.83 | 7/8 cup |
| 250 g | 1.04 | 1 cup |
| 300 g | 1.25 | 1 cup + 1/4 |
| 400 g | 1.67 | 1 cup + 2/3 |
| 500 g | 2.08 | 2 cups + 1/8 |
How to measure it
Liquids are the one place where grams and millilitres nearly agree. Water weighs 1 g per ml, so a 236.6 ml US cup of water is 236 g. Whole milk carries fat and milk solids that nudge it to about 240 g a cup, close enough that this site uses 240 g for both.
Measure liquids in a clear cup at eye level, on a flat surface, reading the bottom of the curve. A dry measuring cup filled to the brim works too if you pour carefully.
Cream, buttermilk and plant milks all sit within a few grams of the same figure. Only thick liquids like sweetened condensed milk are meaningfully heavier.
Density source: Government food composition data for whole milk and water. Method assumed: Water is 236 g a cup, whole milk a touch more at 240 g.
Questions about milk or water
Other ingredients
See also: why conversion charts disagree and the full density data.