The Ultimate Grams to Cups Conversion Chart
A practical reference guide to grams to cups conversions for common baking and cooking ingredients, with notes on why the numbers change by ingredient.
A grams to cups chart is helpful when you need a fast answer, but it only works when the chart is ingredient-specific. A cup is a volume measure, while grams measure weight, so flour, sugar, butter, and water all have different values per cup.
Quick reference values
- All-purpose flour: 125 grams per US cup
- Granulated sugar: 200 grams per US cup
- Butter: 227 grams per US cup
- Water: 236.588 grams per US cup
- Rolled oats: 90 grams per US cup
- Honey: 340 grams per US cup
Why charts still need context
Even a good chart is still a starting point. Humidity, ingredient brand, particle size, and measuring technique can shift the exact result. For flour, scoop-and-pack can create a meaningfully heavier cup than spoon-and-level. For brown sugar, whether the cup is packed changes the number immediately.
Best way to use a chart
- Use charts for quick checks and planning.
- Use a digital scale when accuracy matters most.
- Match the exact ingredient name before converting.
- Check whether the recipe assumes US cups or metric cups.
- Use an interactive converter when you need a custom gram amount.
If you regularly move between metric and US recipes, the most useful workflow is to keep a chart for staple ingredients and use the site converter for every custom amount. That gives you speed without sacrificing accuracy.