Cups to Grams Converter

A cup is a volume measure (240ml for a US cup), but ingredients have different densities. A cup of flour weighs about 125g because flour is light and fluffy, while a cup of sugar weighs 200g because sugar granules pack more tightly. A cup of honey weighs 340g because it is dense.

This converter defaults to the US cup (240ml), which is the standard in most recipes. There is no official UK cup measurement. The metric cup (250ml) is used in Australia and some other countries — to convert those, open Advanced options and change Cup Volume to 250ml and the grams will rescale by 250/240 (about 4% more). A 250ml metric cup of water reads 250g; a 240ml US cup reads 240g.

Cups can vary by 10-20% depending on how you scoop the ingredient. Scooping flour directly from the bag compresses it, giving more weight than spooning it in. Weighing in grams removes this inconsistency and gives reproducible results every time.

The most accurate method is to spoon the flour into the cup and level off with a knife (the spoon and sweep method). Never scoop directly from the bag or tap the cup to settle the flour, as this compresses it and gives too much. Better yet, just weigh it.

Enter the fraction as a decimal — half a cup is 0.5, a third is 0.33, a quarter is 0.25, three-quarters is 0.75. The calculator will give you the correct gram weight.