Cups to Grams Converter

How many grams are in a cup depends on the ingredient. One US cup is 120 grams of all-purpose flour, 198 grams of granulated sugar, 227 grams of butter or approximately 237 grams of water.

Choose the ingredient first, then enter the number of US cups.

Cups to Grams Converter

Choose the ingredient before converting because every ingredient has a different weight per cup.

Cups to Grams Converter

Results use the documented ingredient state and one US customary cup.

Rounded to two decimal places for cups and the nearest gram for reverse conversions.

How Many Grams in 1 Cup?

A cup measures volume. The gram weight changes with density, packing and ingredient state.

Swipe horizontally to view every column

Ingredient 1 US cup 1/2 cup 1/4 cup
All-Purpose Flour 120 g 60 g 30 g
Granulated Sugar 198 g 99 g 50 g
Brown Sugar 213 g 106 g 53 g
Butter 227 g 114 g 57 g
Powdered Sugar 113 g 56 g 28 g
Unsweetened Cocoa Powder 84 g 42 g 21 g
Honey 340 g 170 g 85 g
Fresh Milk 244 g 122 g 61 g
Old-Fashioned Rolled Oats 89 g 44 g 22 g
Vegetable Oil 198 g 99 g 50 g
Long-Grain White Rice 185 g 92 g 46 g
Water 237 g 118 g 59 g
Chocolate Chips 170 g 85 g 42 g
Whole Almonds 142 g 71 g 36 g

Cups to Grams Quick Chart

Swipe horizontally to view every column

Cup amount All-purpose flour Granulated sugar Butter
1/8 cup 15 g flour 25 g sugar 28 g butter
1/4 cup 30 g flour 50 g sugar 57 g butter
1/3 cup 40 g flour 66 g sugar 76 g butter
1/2 cup 60 g flour 99 g sugar 114 g butter
3/4 cup 90 g flour 148 g sugar 170 g butter
1 cup 120 g flour 198 g sugar 227 g butter
1 1/2 cups 180 g flour 297 g sugar 340 g butter
2 cups 240 g flour 396 g sugar 454 g butter
3 cups 360 g flour 594 g sugar 681 g butter

Cups to grams formula

Grams = cups × grams per cup

For 1.5 cups of all-purpose flour: 1.5 × 120 = 180 grams. For 1.5 cups of granulated sugar: 1.5 × 198 = 297 grams.

US cup and metric cup

A US customary cup is approximately 236.588 milliliters. A metric cup is 250 milliliters. Ingredient charts can also use different house standards, so identify the cup standard and source before comparing answers.

Common Cup Amounts in Grams

Recipes rarely stop at one cup, and the arithmetic is easy to get wrong halfway through a batch. These are the amounts people look up most, worked out for the three ingredients that appear in almost every recipe.

AmountFlourGranulated sugarButter
1/4 cup 30 g 50 g 57 g
1/3 cup 40 g 66 g 76 g
1/2 cup 60 g 99 g 114 g
3/4 cup 90 g 148 g 170 g
1 cup 120 g 198 g 227 g
1 1/2 cups 180 g 297 g 340 g
2 cups 240 g 396 g 454 g
3 cups 360 g 594 g 681 g

There is no universal answer to what one cup in grams weighs, because a cup is a fixed volume and every ingredient fills it differently. Flour comes to 120 g per cup, butter 227 g and honey 340 g. That is the same container holding nearly three times the weight.

If you are converting a whole recipe, work from the flour first. It is the ingredient where the cup measurement is least reliable, and the one that changes the result most.

Method and source

How this conversion was checked

Each result uses the grams-per-cup value for the selected ingredient. Results are rounded for practical kitchen use.

Cups to Grams FAQ

How many grams are in a cup?
The ingredient must be named. One US cup is 120 grams of all-purpose flour, 198 grams of granulated sugar, 227 grams of butter or about 237 grams of water.
How many grams is one cup of flour?
One US cup of all-purpose flour is 120 grams when fluffed, spooned into the cup and leveled.
How many grams is half a cup?
Half a cup is 60 grams of all-purpose flour, 99 grams of granulated sugar or about 114 grams of butter, which is the single stick labelled 113 grams on the wrapper.
Is one cup equal to 250 grams?
No. A metric cup holds 250 milliliters, but ingredient weight still depends on density. A US customary cup is approximately 236.588 milliliters.
How do I convert cups to grams?
Multiply the number of cups by the grams-per-cup value for the selected ingredient.

Written & reviewed by

William Leo Founder & Editor, GramstoCup.co

William is a hands-on home baker who founded GramstoCup.co to take the guesswork out of kitchen conversions. He built and maintains the site's ingredient-density dataset, cross-checking every value against published authorities — King Arthur Baking, USDA FoodData Central, NIST and Rose Levy Beranbaum's The Cake Bible — instead of copying figures from other converters, and rebuilds the tables whenever a source updates.

✓ Reviewed for accuracy · Last reviewed September 20, 2026 · Methodology · About the author