Convert Cups and Tablespoons to Grams

Recipes measured in cups, tablespoons, and teaspoons don't convert to grams with a single fixed number, because a cup of flour and a cup of honey don't weigh the same amount. Weight depends on an ingredient's density — how tightly it packs into a given volume — which is why "1 cup" of flour is around 150g while "1 cup" of honey is closer to 340g. ToGrams looks up the density of the specific ingredient you select and calculates its weight for the volume and unit you choose, rather than applying one generic conversion factor to everything.

We also account for regional differences in cup and tablespoon sizes: an Australian cup is 250ml, a US cup is 240ml, and a UK/EU cup is generally treated as 250ml, while an Australian tablespoon (20ml) differs from a US tablespoon (14.8ml). Picking the right regional unit matters for recipe accuracy, especially in baking where ratios are more exact.

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Frequently asked questions

Why does a cup of flour weigh less than a cup of honey?

Cups and tablespoons measure volume, not weight. Honey is a thick liquid with almost no trapped air, so it packs densely into a cup and weighs around 340g. Flour is a light, powdery solid full of tiny air pockets, so the same 250ml cup holds only around 150g of it. Weight always comes down to the specific ingredient's density, not the size of the cup.

Is an Australian cup the same as a US cup?

No. An Australian cup is 250ml, while a US cup is 240ml — a small but meaningful difference in recipes that call for several cups of an ingredient. ToGrams lets you pick the correct regional size before converting.

Why does firmly packed brown sugar weigh more than loosely packed?

Pressing brown sugar into a cup squeezes out the air between the sugar crystals, so a firmly packed cup holds more actual sugar than a loosely packed one of the same size — around 226g firmly packed versus 175g loosely packed. The same logic applies to sifted versus unsifted flour, or chopped versus whole nuts. Where this affects the result, ToGrams lists the ingredient separately for each preparation.