Cups to Grams Converter
Accurate baking conversions for flour, sugar, butter and 30+ ingredients.
- 30+ Ingredients
- US & AU Cups
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Spoon & level for lighter weight, scoop for ~15% more
Scooping flour compacts it ~15% more.
120g
1 cup of All-Purpose Flour = 120g
Cups to Grams Conversion Chart
| Ingredient | ¼ cup | ⅓ cup | ½ cup | ¾ cup | 1 cup |
|---|---|---|---|---|---|
| All-Purpose Flour | 30g | 40g | 60g | 90g | 120g |
| Cake Flour | 27g | 35g | 53g | 80g | 106g |
| Granulated Sugar | 50g | 67g | 100g | 150g | 200g |
| Brown Sugar (packed) | 55g | 73g | 110g | 165g | 220g |
| Powdered Sugar | 30g | 40g | 60g | 90g | 120g |
| Butter | 57g | 76g | 114g | 170g | 227g |
| Milk | 60g | 80g | 120g | 180g | 240g |
| Honey | 85g | 113g | 170g | 255g | 340g |
| Rolled Oats | 23g | 30g | 45g | 68g | 90g |
| White Rice | 46g | 62g | 93g | 139g | 185g |
| Cocoa Powder | 21g | 28g | 43g | 64g | 85g |
| Chocolate Chips | 43g | 57g | 85g | 128g | 170g |
| Almond Flour | 24g | 32g | 48g | 72g | 96g |
Values based on US cup (240ml). For AU/UK cup (250ml) multiply by 1.042.
How Many Grams in a Cup of Flour?
One US cup of all-purpose flour weighs about 120 grams when you spoon it into the cup and level the top. The method matters more with flour than almost any other ingredient, because flour compresses easily and traps air.
If you dip the cup straight into the bag and scoop, the flour compacts and a single cup can weigh 140 grams or more. That extra 15–20% is a leading cause of dry, dense cakes and tough cookies, so weighing on a scale is always the most reliable approach.
| Amount | Grams | Ounces |
|---|---|---|
| ⅛ cup | 15g | 0.53 oz |
| ¼ cup | 30g | 1.06 oz |
| ⅓ cup | 40g | 1.41 oz |
| ½ cup | 60g | 2.12 oz |
| ⅔ cup | 80g | 2.82 oz |
| ¾ cup | 90g | 3.17 oz |
| 1 cup | 120g | 4.23 oz |
| 1½ cups | 180g | 6.35 oz |
| 2 cups | 240g | 8.47 oz |
Cake flour is lighter at 106g/cup. Bread flour matches all-purpose at 120g/cup.
How Many Grams in a Cup of Sugar?
One US cup of granulated white sugar weighs about 200 grams. Sugar crystals are dense and pack consistently, so measuring granulated sugar by the cup is fairly accurate compared to flour.
Brown sugar is different: it should be firmly packed, which pushes a cup up to about 220 grams. Powdered (confectioners) sugar is much lighter and airier at roughly 120 grams per cup, and it should be sifted if lumpy.
| Amount | Granulated | Brown (packed) | Powdered |
|---|---|---|---|
| ¼ cup | 50g | 55g | 30g |
| ⅓ cup | 67g | 73g | 40g |
| ½ cup | 100g | 110g | 60g |
| ¾ cup | 150g | 165g | 90g |
| 1 cup | 200g | 220g | 120g |
Unpacked brown sugar is only ~180g/cup.
How Many Grams in a Cup of Butter?
One US cup of butter weighs about 227 grams, equal to two standard sticks. Because butter is sold and wrapped by weight, these conversions are among the most consistent in baking.
US butter sticks are marked with tablespoon and cup lines, which makes portioning simple: a half cup is one full stick. If your recipe lists grams, a kitchen scale removes any doubt.
| Amount | Grams | Ounces |
|---|---|---|
| ⅛ cup | 28g | 0.99 oz |
| ¼ cup | 57g | 2.01 oz |
| ⅓ cup | 76g | 2.68 oz |
| ½ cup | 114g | 4.02 oz |
| ¾ cup | 170g | 6.00 oz |
| 1 cup | 227g | 8.01 oz |
½ cup butter = 1 US stick = 113g = 4oz.
Why Grams Are More Accurate Than Cups
Scooping variance: A cup of flour can swing by 30 grams depending on whether it is spooned or scooped.
Humidity: Flour and sugar absorb moisture from the air, changing how much fits in a cup.
Recipe scaling: Doubling or halving a recipe is exact with grams but error-prone with fractional cups.
International recipes: US, UK, and metric cups differ, so grams are the only measurement everyone shares.
Professional standard: Every bakery and pastry kitchen weighs ingredients because it is faster and repeatable.
Frequently Asked Questions
1 cup of all-purpose flour weighs about 120 grams when spooned and leveled (US cup). If you scoop directly from the bag it compacts and can reach 140 grams. For accuracy, spoon the flour in and level the top.
1 cup of granulated white sugar weighs about 200 grams (US cup) or 208 grams (AU/UK cup). Sugar crystals pack consistently, so cup measuring is fairly reliable for it. Caster sugar weighs the same.
1 cup of butter weighs about 227 grams (US cup), which equals 2 US sticks. A half cup is 113 grams, exactly 1 stick. Butter is sold by weight, so these values are very consistent.
1 cup of honey weighs about 340 grams (US cup) or 354 grams (AU/UK cup). Honey is much denser than water, so it weighs more than most liquids. Lightly oil the cup so it slides out cleanly.
1 cup of rolled oats weighs about 90 grams (US cup) or 94 grams (AU/UK cup). Oats are light and airy, so do not pack them down. Quick oats weigh slightly more per cup than old-fashioned rolled oats.
1 cup of milk weighs about 240 grams (US cup) or 250 grams (AU/UK cup), matching its volume in millilitres. Whole, skim, and plant milks are all close to this weight. Measure liquids at eye level for accuracy.
Half a cup of all-purpose flour weighs about 60 grams when spooned and leveled. If scooped from the bag it can be closer to 70 grams. Use a scale for the most reliable results.
A quarter cup of butter weighs about 57 grams, which is half a US stick. An eighth of a cup is roughly 28 grams, or 1 ounce. These values stay consistent because butter is sold by weight.
A US cup is 240ml while an Australian (and UK) cup is 250ml. That 10ml difference is about 4% and can affect precise recipes. This converter lets you switch between both standards to get the right gram amount.
Flour is compressible, so how you fill the cup changes the weight. Spooning and leveling gives about 120 grams, while scooping straight from the bag packs in extra and can reach 140 grams. Humidity and sifting also change the result, which is why weighing is more reliable.
Fluff the flour, spoon it lightly into the measuring cup, then level the top with a straight edge. Never dip the cup into the bag, as scooping compacts the flour and adds too much. For best results, weigh it on a digital scale instead.
No. A US legal cup is 240ml, but an Australian and UK cup is 250ml, and a metric cup used in some recipes is also 250ml. Always check which standard a recipe uses, or weigh in grams to avoid the ambiguity entirely.
2 cups of granulated white sugar weigh about 400 grams (US cup) or 416 grams (AU/UK cup). For packed brown sugar, 2 cups is about 440 grams. Doubling the cup amount simply doubles the gram weight.
1 cup of firmly packed brown sugar weighs about 220 grams (US cup). Always press it into the cup so it holds the shape when turned out. Loosely filled brown sugar can weigh as little as 180 grams.
1 cup of unsweetened cocoa powder weighs about 85 grams (US cup) or 89 grams (AU/UK cup). Cocoa powder is light and clumps easily, so sift it before measuring. Spoon and level rather than scooping for accuracy.
Data sources: USDA FoodData Central · King Arthur Baking Company · NIST Metric Kitchen Guide