How Many Grams in a Cup? Ingredient Weight Reference

The scooping technique dramatically affects how much flour ends up in a measuring cup. If you dip the cup directly into the flour bag and pack it, you can fit 150–160 g. If you spoon flour into the cup and level it off with a straight edge ('spoon and level'), you get 120–125 g. Professional baking recipes that specify cups almost always mean spoon-and-level, but they do not always say so.

This 25–30% variation in flour amount is the single most common cause of dense, dry baked goods. A recipe calibrated at 125 g per cup will produce different results if you use 155 g per cup. The only way to be consistently accurate is to use a kitchen scale. Most stand mixers, digital scales, and serious baking resources have shifted to weight-based recipes for precisely this reason.

For most liquids, grams and milliliters are very close because liquid density is near that of water (1 g/mL). 1 US cup of water = 236.6 mL ≈ 237 g. 1 US cup of whole milk ≈ 240 g (slightly denser than water). 1 US cup of heavy cream ≈ 238 g. 1 US cup of vegetable oil ≈ 218 g (less dense than water). 1 US cup of honey ≈ 340 g (much denser, about 1.42 g/mL).

For liquids, measuring by volume (cups or mL) is usually fine because the density variation is small. An exception: honey, molasses, and syrups are significantly denser than water and will weigh more per cup than you might expect. When a recipe calls for '1/4 cup honey,' that is about 85 grams — knowing this helps if you are scaling a recipe or substituting by weight.