Grams to Cups Converter

One US cup holds about 125 g of flour, 200 g of sugar or 227 g of butter. Choose your ingredient below.

Grams to cups converter

Source: USDA FoodData Central (SR Legacy household measures) · All sources

A cup measures volume and a gram measures weight, so the conversion depends on how dense the ingredient is. This converter uses the USDA's weight for a level US cup of each ingredient and rounds to measures you can actually scoop.

Grams to cups chart

Common gram amounts for the five ingredients people convert most. Each cell shows the nearest kitchen measure and, underneath, the exact decimal in US cups.

Grams to cups for common ingredients (US cups, level)
Grams	All-purpose flour	Granulated sugar	Brown sugar (packed)	Butter	Water
25 g	3 tbsp0.2 cups	2 tbsp0.13 cups	2 tbsp0.11 cups	2 tbsp0.11 cups	2 tbsp0.11 cups
50 g	1/3 cup + 1 tbsp0.4 cups	1/4 cup0.25 cups	1/4 cup0.23 cups	1/4 cup0.22 cups	3 tbsp0.21 cups
100 g	2/3 cup + 2 tbsp0.8 cups	1/2 cup0.5 cups	1/3 cup + 2 tbsp0.45 cups	1/4 cup + 3 tbsp0.44 cups	1/4 cup + 3 tbsp0.42 cups
125 g	1 cup1 cup	1/2 cup + 2 tbsp0.63 cups	1/2 cup + 1 tbsp0.57 cups	1/2 cup + 1 tbsp0.55 cups	1/3 cup + 3 tbsp0.53 cups
150 g	1 cup + 3 tbsp1.2 cups	3/4 cup0.75 cups	1/2 cup + 3 tbsp0.68 cups	2/3 cup0.66 cups	1/2 cup + 2 tbsp0.63 cups
200 g	1 1/2 cups + 2 tbsp1.6 cups	1 cup1 cup	3/4 cup + 3 tbsp0.91 cups	3/4 cup + 2 tbsp0.88 cups	2/3 cup + 3 tbsp0.84 cups
250 g	2 cups2 cups	1 1/4 cups1.25 cups	1 cup + 2 tbsp1.14 cups	1 cup + 2 tbsp1.1 cups	1 cup + 1 tbsp1.05 cups
300 g	2 1/3 cups + 1 tbsp2.4 cups	1 1/2 cups1.5 cups	1 1/4 cups + 2 tbsp1.36 cups	1 1/4 cups + 1 tbsp1.32 cups	1 1/4 cups1.27 cups
400 g	3 cups + 3 tbsp3.2 cups	2 cups2 cups	1 3/4 cups + 1 tbsp1.82 cups	1 3/4 cups1.76 cups	1 1/2 cups + 3 tbsp1.69 cups
500 g	4 cups4 cups	2 1/2 cups2.5 cups	2 1/4 cups2.27 cups	2 cups + 3 tbsp2.2 cups	2 cups + 2 tbsp2.11 cups

How to convert grams to cups

Divide the weight in grams by the weight of one cup of that ingredient:

cups = grams ÷ grams per cup

Example: a recipe calls for 250 g of all-purpose flour. One level cup of all-purpose flour weighs 125 g, so 250 ÷ 125 = 2 cups. The same 250 g of granulated sugar is 250 ÷ 200 = 1.25 cups, or 1 1/4 cups.

To turn a decimal into something you can measure, take the whole cups, then the nearest cup fraction (1/4, 1/3, 1/2, 2/3 or 3/4), then make up the rest with tablespoons. There are 16 tablespoons in a cup, so 0.06 cup is about 1 tablespoon.

Weight of 1 cup, by ingredient

These are the USDA's household-measure weights for a level US cup. Use them for any amount: grams ÷ the 1-cup weight = cups.

Weight of 1 US cup, by ingredient
Ingredient	1 cup	1/2 cup	1/4 cup	1 tbsp	How measured
All-purpose flour	125 g	63 g	31 g	7.8 g	spooned into the cup and leveled
Bread flour	137 g	69 g	34 g	8.6 g	spooned and leveled
Whole wheat flour	120 g	60 g	30 g	7.5 g	spooned and leveled
Granulated sugar	200 g	100 g	50 g	13 g	white sugar
Brown sugar (packed)	220 g	110 g	55 g	14 g	firmly packed
Powdered sugar	120 g	60 g	30 g	7.5 g	unsifted
Butter	227 g	114 g	57 g	14 g	2 US sticks
Water	237 g	119 g	59 g	15 g	1 mL of water weighs about 1 g
Whole milk	244 g	122 g	61 g	15 g	3.25% milkfat
Heavy cream	238 g	119 g	60 g	15 g	liquid, not whipped
Vegetable oil	218 g	109 g	55 g	14 g	canola or similar
Honey	339 g	170 g	85 g	21 g	level cup
Cocoa powder	86 g	43 g	22 g	5.4 g	unsweetened
Rolled oats	81 g	41 g	20 g	5.1 g	old-fashioned, dry
White rice	185 g	93 g	46 g	12 g	long-grain, uncooked
Cornstarch	128 g	64 g	32 g	8 g	level cup
Table salt	292 g	146 g	73 g	18 g	fine; kosher salt is much lighter
Peanut butter	258 g	129 g	65 g	16 g	smooth
Chocolate chips	168 g	84 g	42 g	11 g	semisweet

Kosher salt weighs much less than table salt per cup (its crystals are larger and hollow), and the brands differ, so don't swap them by volume.

Measuring cups accurately

Flour and powdered sugar: stir to loosen, spoon into the cup, then level with a straight edge. Don't tap or shake the cup.
Brown sugar: press it firmly into the cup until it holds its shape when turned out.
Liquids: use a clear measuring jug on a flat surface and read it at eye level.
Sticky ingredients (honey, peanut butter): a light film of oil in the cup helps them slide out, so you get the full amount.

If the recipe gives grams, a kitchen scale is quicker and more accurate than any cup conversion. Set the bowl on the scale, press tare, and add each ingredient by weight.

Frequently asked questions

How many cups is 100 grams?

It depends on the ingredient. 100 g of all-purpose flour is 0.8 cup, about 2/3 cup + 2 tbsp, 100 g of granulated sugar is 1/2 cup, and 100 g of butter is a little under 1/2 cup (7 tbsp).

How many grams are in 1 cup?

1 US cup of water weighs about 237 g. For dry ingredients it is less: about 125 g for all-purpose flour, 200 g for granulated sugar and 120 g for powdered sugar. Butter is 227 g per cup.

Why do other converters give different numbers for flour?

Flour packs down. A cup filled by spooning flour in and leveling it weighs 120–125 g; scooping straight from the bag can push it to 140 g or more. Recipes written by weight avoid the problem, which is why bakers prefer a scale.

Is a US cup the same as a metric cup?

No. A US customary cup is 236.6 mL. The metric cup used in Australia, New Zealand and Canada is 250 mL, about 6% larger, and US nutrition labels round a cup to 240 mL. This converter uses the 236.6 mL US cup.

Do I measure butter by the cup?

You can, but in the US butter is usually sold in 1/2-cup sticks of 113 g (8 tablespoons), so 1 cup of butter is 2 sticks or 227 g.

Sources

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Sources: 2 cited, listed above
Tested: 20 automated checks of this converter run in a real browser before every release
Last updated: November 5, 2026
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Related charts and converters

Cups to GramsUS cups (including fractions) to grams, by ingredient.
Flour in GramsHow much a cup of all-purpose, bread and whole wheat flour weighs.
Sugar in GramsGranulated, brown and powdered sugar by the cup and by weight.