Units
Cups to grams
US cups to grams for flour, sugar, butter, rice, milk and more.
How to use it
- Choose the ingredient. The gram weight depends on what is in the cup.
- Choose the US cup fraction, down to a tablespoon.
- Use the gram result. A metric cup of 250 ml is a different cup and is not this table.
One chart, spooned and packed
The weights are the King Arthur Baking ingredient chart for one US cup. Plain flour is 120 g, spooned and levelled. Self-raising flour and wholemeal flour are 113 g on that chart. Caster sugar is 190 g, granulated sugar 198 g, unsifted icing sugar 113 g, and packed soft brown sugar 213 g. Butter is 226 g for a full cup, from their 113 g half-cup. Milk and water are both listed as 227 g.
Rice, uncooked long-grain, is 198 g. Old-fashioned rolled oats are 89 g. Unsweetened cocoa is 84 g, from their 42 g half-cup. Honey is 336 g, from their 21 g tablespoon. Vegetable oil is 198 g and olive oil is 200 g. A tablespoon on this page is one sixteenth of the cup weight for that ingredient.
The cup a UK or Irish kitchen actually owns
King Arthur’s cup of water is the 227 g figure on their chart, which is the 8 ounce cup they publish, not a 250 ml metric cup and not a rounded 240 ml. A metric cup of water is 250 g. Scaling a flour weight by 250/227 would pretend flour behaves like water. If the recipe says a metric cup, weigh the ingredient from a metric source instead of using this table.
UK blocks of butter are marked in grams. A US stick is half a cup, 113 g on this chart. Scooping flour packs it down and can add tens of grams. Weighing removes that argument. The gas mark page is the oven half of the same recipe.
Questions
How many grams in a cup of plain flour?
120 g on the King Arthur chart, spooned and levelled. A scooped cup weighs more.
Is a cup 250 ml?
A metric cup is 250 ml. The weights on this page belong to the US cup on the King Arthur chart, where water is listed as 227 g. They are different cups.