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Cups to grams: every ingredient in one chart
A cup measures volume, not weight — so a cup of flour (120g) weighs far less than a cup of sugar (200g). Here's every common ingredient in one chart.
The master chart (1 US cup)
| Ingredient | 1 cup | ½ cup | ¼ cup |
|---|---|---|---|
| All-purpose flour | 120 g | 60 g | 30 g |
| Granulated sugar | 200 g | 100 g | 50 g |
| Brown sugar (packed) | 220 g | 110 g | 55 g |
| Powdered sugar | 120 g | 60 g | 30 g |
| Butter | 227 g | 113 g | 57 g |
| Milk | 240 g | 120 g | 60 g |
| Water | 237 g | 118 g | 59 g |
| Honey | 340 g | 170 g | 85 g |
| Rice (uncooked) | 185 g | 93 g | 46 g |
| Rolled oats | 90 g | 45 g | 23 g |
| Cocoa powder | 100 g | 50 g | 25 g |
Why one chart can't be a single number: density. A cup of honey weighs nearly four times a cup of oats. This is exactly the question Google's calculator can't answer — it doesn't know which ingredient you mean. Weighing on a scale beats measuring cups every time, especially for flour, where packing can change the weight by up to 20%.
The US cup vs the metric cup
A US cup is 237 ml; a metric cup (used in Australia, and some European recipes) is 250 ml — about 5% larger. If a recipe is metric, the gram weights above run slightly low. When in doubt, weigh.
Frequently asked questions
How many grams is one cup?
It depends on the ingredient: about 120g of flour, 200g of sugar, 227g of butter, or 240g of milk. A cup measures volume, not weight.
Why does a cup of flour weigh less than a cup of sugar?
Because they have different densities. Sugar is heavier per unit of volume, so the same cup holds 200g of sugar but only 120g of flour.
Is a US cup the same as a metric cup?
No — a US cup is 237ml and a metric cup is 250ml, about 5% larger. For accuracy, weigh ingredients in grams.