Cups to Grams Converter
Use this cups to grams converter to turn American volume measurements into accurate weights for baking. Because a cup of flour weighs far less than a cup of honey, this tool uses real per-ingredient densities — pick your ingredient, enter the amount, and get grams and ounces instantly. You can also convert grams back to cups.
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Convert cups to grams
Enter values above and press Calculate to see your result.
Formula used
Volume-to-weight conversion needs the ingredient's density (grams per US cup):
Grams = Cups × density (g per cup)Cups = Grams ÷ density
A US cup is 236.6 ml; 1 cup = 16 tablespoons = 48 teaspoons. Densities differ a lot: a cup of all-purpose flour is about 120 g, but a cup of honey is about 340 g.
Worked examples
Flour. 2 cups of all-purpose flour ≈ 240 g.
Sugar. 1 cup of granulated sugar ≈ 200 g.
Reverse. 100 g of butter ≈ 0.44 cups (about 7 tablespoons).
How to use this calculator
- Pick your ingredient from the list.
- Choose the direction: cups → grams, or grams → cups.
- Enter the amount and the volume unit (cups, tablespoons or teaspoons).
- Press Calculate to see grams and ounces (or cups).
Common cup weights
Approximate grams in one US cup of each ingredient.
| Ingredient | 1 cup ≈ | Notes |
|---|---|---|
| All-purpose flour | 120 g | Spoon-and-level |
| Bread flour | 127 g | |
| Granulated sugar | 200 g | |
| Brown sugar (packed) | 213 g | Firmly packed |
| Butter | 227 g | = 2 sticks |
| Water / milk | 237–244 g | |
| Honey | 340 g | Heavier than water |
How you scoop matters: scooping flour straight from the bag can add 20–30%. Spoon it into the cup and level off.
Who should use this converter
Anyone following an American recipe with cup measurements who prefers — or whose recipe needs — the accuracy of grams. Weighing is especially important for baking, where small errors in flour or sugar change the result.
Why weight beats volume
A “cup” of a dry ingredient depends on how tightly it is packed, so two bakers can measure very different amounts. Weighing removes that variability and makes recipes repeatable. This tool uses standard densities, but the most accurate approach is always a kitchen scale.
Common mistakes to avoid
- Scooping flour. Packing flour into the cup overstates the weight; spoon and level instead.
- Assuming one density fits all. Cups of different ingredients weigh very differently — always pick the right one.
- Confusing US and metric cups. This tool uses the US cup (236.6 ml), not the 250 ml metric cup.
Limitations of this converter
Densities are typical averages; brand, humidity, and packing change real weights by a few percent. For critical baking, weigh on a scale. Liquids are close to their water weight but thick syrups vary.
Frequently asked questions
How many grams is one cup of flour?
About 120 g for all-purpose flour when spooned and levelled. Bread flour is a little heavier at ~127 g.
Is a US cup the same as a metric cup?
No. A US cup is 236.6 ml; the metric cup is 250 ml. This tool uses the US cup, which most American recipes assume.
Why does a cup of honey weigh more than a cup of flour?
Honey is much denser than flour, so the same volume weighs nearly three times as much.
How many tablespoons in a cup?
16 tablespoons make one US cup, and 3 teaspoons make one tablespoon (48 teaspoons per cup).
Can I convert grams back to cups?
Yes — switch the direction to “Grams → cups” and enter the weight.