Grams to Cups Calculator
Convert a weight in grams into cups for the ingredient you are using. Handy when you own cups but the recipe is metric.
US legal cup = 240 ml
Different ingredients weigh different amounts for the same volume, so pick the right one.
Answer
125 g plain flour = 1 US cup
Handy amounts for this ingredient
Reference and detail
What one cup weighs
| Ingredient | One US cup |
|---|---|
| Plain flour | 125 g |
| Caster sugar | 200 g |
| Icing sugar | 120 g |
| Butter | 227 g |
| Water | 240 g |
| Rolled oats | 95 g |
Cups are approximate
Converting weight into cups always involves rounding, so expect a figure like two-thirds of a cup rather than something exact. For baking, scales will always give a better result.
Questions and answers
Questions about converting grams to cups
Why is the answer a cup and a fraction rather than a round number?
Converting a weight into cups almost never lands on a whole or half cup, because gram weights and cup sizes don't divide evenly for most ingredients. Expect fractions like two-thirds or three-quarters of a cup rather than a tidy figure.
Which ingredient should I choose if my recipe just says 'flour' or 'sugar'?
Pick the closest match: plain flour for a UK recipe calling for all-purpose flour, and white granulated sugar unless the recipe specifies caster, brown or icing sugar.
Different types of the same ingredient pack to different weights, so the wrong choice will throw the cup figure off.
Is it better to weigh the ingredient instead of measuring cups?
Yes, if you own kitchen scales. Volume measures like cups are useful when you don't have scales to hand, but weighing removes the packing and levelling differences that make cup measures inconsistent.
Guidance
Read the full guide
- Cups to Grams: Why the Ingredient MattersA cup measures space, not weight, so one cup of flour and one cup of sugar are nowhere near the same. Here is what that means when you follow an American recipe.