A recipe from a friend says 250 grams of flour. Your measuring set is all cups. You search “how many cups in a gram” and every answer is different.
That’s because there’s no single answer. A cup is a measure of space and a gram is a measure of weight, and a cup of flour weighs far less than a cup of honey. This grams to cups converter knows the difference, and lets you pick the ingredient so the answer fits your kitchen.
How to use the Grams to Cups Converter#
- Choose the direction. Pick grams to cups, or cups to grams.
- Enter the amount. Type the weight in grams or the volume in cups.
- Pick the ingredient. This sets the density used for the conversion.
- Pick your cup size. Use the US cup unless your recipe is metric.
- Read the result. You get cups, the nearest kitchen measure, tablespoons, teaspoons and millilitres.
Why you can’t convert grams to cups without the ingredient#
A gram is a weight. A cup is a volume. To move from one to the other you need the density of what you’re measuring, which is how many grams fit in a cup. Water is easy, since a US cup of water weighs about 237 g. Flour is airy and weighs about half as much for the same space. Honey is heavy and weighs about 340 g.
A worked example#
A recipe asks for 250 g of all-purpose flour. The converter uses 125 g per US cup, so the answer is 250 ÷ 125 = 2 cups. The same 250 g of granulated sugar, at 200 g per cup, is 1.25 cups. The same weight of butter, at 227 g per cup, is a bit over a cup. One number, three different answers.
How much a cup weighs#
These are the typical weights per US cup used by the converter. They’re averages, so your own measure can differ a little:
| Ingredient | Grams per cup |
|---|---|
| All-purpose flour | 125 |
| Bread flour | 127 |
| Cake flour | 114 |
| Granulated sugar | 200 |
| Brown sugar, packed | 213 |
| Powdered sugar | 120 |
| Butter | 227 |
| Honey | 340 |
| Milk | 245 |
| Water | 237 |
| Vegetable oil | 218 |
| Rolled oats | 90 |
| Cocoa powder | 85 |
| White rice, uncooked | 185 |
| Table salt | 288 |
| Chocolate chips | 170 |
Fractions of a cup#
Recipes love quarter and half cups. For all-purpose flour, a quarter cup is about 31 g, half a cup about 63 g and three quarters about 94 g. For sugar the numbers come out round: 50 g, 100 g and 150 g. The converter rounds to the nearest eighth of a cup so the result is something you can actually measure.
Why flour is the troublemaker#
Flour packs down in the bag, so how you fill the cup changes the weight. Scooping straight from the bag can give you 140 g or more, while spooning it lightly into the cup and levelling it gives something near 120 to 125 g. That difference can turn a soft cake into a dense one. If you bake often, a cheap kitchen scale removes the guesswork, and then you can skip cups altogether.
Cup sizes differ too. A US cup is about 237 mL. A metric cup, used in Australia, Canada and several other countries, is 250 mL, about 6 percent larger. The converter lets you choose.
Four conversions to check against#
Using a US cup of 236.6 ml: 250 g of plain flour is 2 cups (at 125 g a cup). 200 g of granulated sugar is 1 cup. 100 g of butter is 0.44 cup, a little under half a cup, or about 7 tablespoons. 500 g of rice is 2.7 cups at 185 g a cup. If your recipe uses a metric cup of 250 ml, each cup holds about 5.7 percent more, so 250 g of flour is just under 2 cups.
| Ingredient | Grams per US cup | Grams per metric cup |
|---|---|---|
| Plain flour | 125 | 132 |
| Sugar | 200 | 211 |
| Butter | 227 | 240 |
| Honey | 340 | 359 |
| Water | 237 | 250 |
| Rice, uncooked | 185 | 196 |
Why a scale beats cups#
Scooping flour with the cup packs it down, and a scooped cup can hold 140 to 150 g, up to 20 percent more than a spooned and levelled cup at 125 g. That is enough to turn a soft cake into a dry one. Weighing in grams removes the guesswork, and it saves washing up too, since you can add everything to a single bowl. If you must use cups, fluff the flour with a fork, spoon it in lightly, and level it off with a knife. To scale a recipe up for a crowd, the percentage increase calculator shows the new quantities.
Frequently asked questions#
About 125 grams for all-purpose flour in a US cup, though it can range from 120 to 140 depending on how you fill the cup.
About 2 cups of all-purpose flour, using 125 grams per cup.
It depends on the ingredient. One gram of all-purpose flour is about 0.008 cups. One gram of water is about 0.004 cups.
A cup of granulated sugar is about 200 grams. Packed brown sugar is heavier at about 213 grams, and powdered sugar lighter at about 120.
No. A US cup is about 237 mL and a metric cup is 250 mL, so the metric cup holds slightly more.
It depends on the ingredient, because a cup measures volume. A US cup holds about 125 g of plain flour, 200 g of sugar, 227 g of butter and 237 g of water. Choose the ingredient in the converter and it uses the right density.