Weight guide • 24 ingredients

Cups to Grams Converter

Convert cup volumes to exact scale grams with calibrated densities and measuring styles.

Step 1
Step 2
US Cups
Step 3
Density dependent
Physical density spectrum Flour & grains
Airy (0.40) 0.507 g/mL Dense (1.45)
Always spoon and level flour into measuring cups. Scooping directly compacts up to 20g extra into every cup.

Next steps in your recipe

Connected culinary utilities

Grams to Cups

Convert scale weight to cups and scoops

Open tool →

Recipe Scaler

Multiply or divide recipe yields

Open tool →

Baking Pan Converter

Adjust recipes for different pans

Open tool →

Oven to Air Fryer

Convert oven temperatures and times

Open tool →

1. Quick cups to grams conversion chart

Because each ingredient has a different density, 1 cup of flour weighs significantly less than 1 cup of sugar or butter. Here is what standard US cup measurements weigh in grams:

Ingredient ¼ cup ⅓ cup ½ cup ¾ cup 1 cup
All-purpose flour (spooned) 30 g 40 g 60 g 90 g 120 g
All-purpose flour (scooped) 35 g 47 g 70 g 105 g 140 g
Bread flour (spooned) 32 g 42 g 64 g 95 g 127 g
Cake flour (spooned) 29 g 38 g 57 g 86 g 114 g
Granulated white sugar 50 g 67 g 100 g 150 g 200 g
Brown sugar (packed) 55 g 73 g 110 g 165 g 220 g
Powdered sugar (confectioners) 30 g 40 g 60 g 90 g 120 g
Unsalted butter 57 g 76 g 113.5 g 170 g 227 g
Whole milk 61 g 81 g 122 g 183 g 244 g

2. Why volumetric measuring fails in professional baking

Baking is a precise chemical reaction. Unlike cooking a stew where a splash of water doesn't ruin the outcome, baked goods rely on exact ratios of hydration, gluten, and fat. Volumetric measuring cups introduce massive variations based on human handling:

Mathematical formula
$\text{Weight (g)} = \text{Cups} \times \text{Bulk Density (g/cup)}$
Human error range
Direct scooping packs 15% to 25% extra mass
Cup volume baseline
1 US Customary cup = 236.59 mL = 16 tablespoons

When you scoop directly from a canister, the flat side of the cup packs the flour particles together, forcing up to 140–150g into a single cup. That extra 20 to 30 grams of flour per cup absorbs liquid like a sponge, yielding dry cookies and dense, chewy cakes.

3. The proper spoon and level technique

If you don't have a kitchen scale and must measure by cup volume, the "spoon and level" method is the gold standard:

1. Fluff the ingredient: Use a fork or spoon to stir the flour inside your container to aerate and loosen any settled pockets.

2. Spoon gently: Spoon the ingredient into the measuring cup until it forms a loose mound above the rim. Never shake, tap, or press down on the cup.

3. Sweep level: Use the flat back of a butter knife or bench scraper to sweep the excess flour back into your canister in a single smooth motion.

4. 3 mistakes that ruin recipe conversions

1. Tapping the measuring cup: Tapping the cup on the counter to level it settles the flour and eliminates aeration, adding up to 15% extra weight.

2. Using liquid cups for dry ingredients: Liquid measuring cups are designed with headspace to prevent spilling. You cannot sweep them level with a knife, making accurate dry measurements impossible.

3. Assuming metric and US cups are the same: US cups are 236.6 mL, while British and Australian metric cups are 250 mL. Using a metric cup with an American recipe adds an unintended 5.7% more ingredient.

5. How to convert cups to grams

Follow these straightforward steps to convert any recipe from volume cups to scale weight:

1
Select your ingredient Choose the staple from the searchable dropdown to load its verified bulk density.
2
Enter cup volume Type decimal cups or click one of the quick fractional presets (¼, ⅓, ½, ¾, 1 cup).
3
Choose your measuring technique Select whether the original recipe assumed spooned and leveled or canister scooped.
4
Weigh on your scale Place your mixing bowl on the kitchen scale, tare it to zero, and pour until you match the calculated gram weight.
5
Tare and repeat for next ingredients Press the tare button to reset your digital scale back to 0g and measure each remaining ingredient directly into the same mixing bowl, eliminating extra dishes.

6. Frequently asked questions

1. How many grams is 1 cup of all-purpose flour?

1 level US cup of all-purpose flour weighs 120 grams when spooned and leveled. If dipped directly from the canister, it compresses to roughly 140 grams.

2. How many grams is 1 cup of granulated sugar?

1 cup of white sugar weighs exactly 200 grams. Sugar crystals pack uniformly, so scooping style does not affect weight significantly.

3. How many grams is 1 cup of butter?

1 cup of butter equals 227 grams (8 ounces, or 2 standard American sticks / 16 tablespoons).

4. Why do recipes specify "packed" brown sugar?

Brown sugar contains sticky molasses which traps random air pockets. Packing it into the cup eliminates voids to create a reliable benchmark: exactly 220 grams per cup.

5. Is a digital kitchen scale truly better than cups?

Yes. A kitchen scale eliminates measuring variations, prevents over-floured dry bakes, and saves cleanup by letting you measure all ingredients directly into one mixing bowl.