Cups to Grams Converter

A cup is a measure of volume and a gram is a measure of weight, so there is no single "cups to grams" number — a cup of flour weighs about 120 g, a cup of sugar 200 g, and a cup of honey 336 g. Pick the ingredient, type an amount (fractions like ¾ or 1 1/2 are fine), and choose the units you have and the units you want. The converter goes both ways — grams back to cups works just as well — and also lists the same amount in every other spoon, cup, and weight unit, plus a quick table of what ¼, ⅓, ½, and 1 cup of that ingredient weighs.

The ingredient list covers about sixty kitchen staples: wheat, rye, almond, and coconut flours; white, brown, and powdered sugar and the common syrups; butter and oils; milk, cream, yogurt, and cheese; rice, oats, and dried legumes; nuts, seeds, and dried fruit; and the small-measure baking ingredients where a gram matters most — baking powder, baking soda, yeast, cocoa, and three kinds of salt. Search by any common name: "icing sugar", "plain flour", and "bicarb" all find the right row.

Where the numbers come from

Each ingredient stores one figure — its weight in grams per level US cup — drawn from the King Arthur Baking ingredient weight chart and USDA FoodData Central household measures, rounded where the two broadly agree. Every other unit converts through that number by volume, so a metric cup (250 ml) of flour weighs about 127 g and a UK imperial cup (284 ml) about 144 g. Liquids follow from their density: water is exactly 1 g per ml, oils about 0.92.

Spooned or scooped flour

How you fill the cup changes the answer more than anything else. Recipe developers fluff the flour, spoon it into the cup, and level it with a knife — that's the 120 g cup. Dipping the cup into the bag and sweeping it level packs the flour down and gives roughly 20% more, closer to 145 g, which is enough to turn a tender cake dry. If you know a recipe was written by someone who scoops, switch the method in Options; it applies to flour, cocoa, cornstarch, and powdered sugar.

Which cup?

• US cup — 236.6 ml (8 US fl oz). What American recipes mean, and the default here.
• Metric cup — 250 ml, used in Australia, New Zealand, Canada, and South Africa.
• UK imperial cup — 284 ml (10 imperial fl oz), found in older British recipes; modern UK recipes use grams.
• Japanese cup — 200 ml, used for most ingredients in Japanese recipes (a rice cup, gō, is smaller at 180 ml).

Spoons differ too: a US tablespoon is 14.8 ml, a metric one 15 ml, and an Australian one 20 ml (four teaspoons, not three).

Example

Ingredient: All-purpose flour
2 1/4 US cups → grams

270 g
(¼ cup = 30 g, ½ cup = 60 g, 1 cup = 120 g)

The same 2¼ cups scooped from the bag would weigh about 324 g — more than half a cup of extra flour.

Common uses

• Weigh out an American recipe on a kitchen scale instead of hunting for measuring cups
• Convert a European or British recipe in grams into cups and spoons
• Turn a "1 tsp salt" into grams — and see why Diamond Crystal kosher salt needs nearly twice the volume
• Check how many sticks of butter or tablespoons make up a gram amount

Limitations

• Weights are typical values, not lab measurements. Brands, grind, and humidity move them a few percent, and dense or chunky ingredients (chopped nuts, shredded cheese) vary more depending on how tightly they're packed.
• Brown sugar is assumed firmly packed and powdered sugar unsifted, as US recipes usually mean.
• For anything not in the list, a kitchen scale is the only reliable answer.

How many grams are in a cup of flour?

About 120 grams for all-purpose or bread flour that's spooned into the cup and leveled, which is how most recipes are written. Scooping the cup straight from the bag packs in roughly 20% more — around 145 g. Whole wheat flour is about 113 g a cup, cake flour 114 g, and almond flour 96 g.

How many grams are in a cup of sugar?

A US cup of granulated sugar weighs about 200 grams. Brown sugar packed into the cup is heavier, about 213 g, while unsifted powdered (icing) sugar is much lighter at about 120 g.

How many grams is a cup of butter?

One US cup of butter is 227 grams — two US sticks of 113 g each. A tablespoon of butter is about 14 g, and melting it doesn't change the weight.

Why can't you convert cups to grams with one number?

Cups measure volume and grams measure weight, so the conversion depends on how dense the ingredient is. A cup of water weighs 237 g, a cup of flour 120 g, and a cup of honey 336 g. You need the ingredient's weight per cup, which is what this converter looks up.

Is a metric cup the same as a US cup?

No. A metric cup is 250 ml, a US cup is 236.6 ml, and an old UK imperial cup is 284 ml. The difference is about 6% between metric and US cups — small for soup, but enough to matter for flour in a cake. Choose the cup your recipe's country uses.

How many grams is a teaspoon of salt?

About 6 grams for fine table salt. Kosher salt is flakier and much lighter by volume: Diamond Crystal is about 2.8 g per teaspoon and Morton kosher about 4.8 g. That's why swapping salts by the spoon can make a dish twice as salty — weigh it if you switch.

How many tablespoons are in a cup?

A US cup holds 16 tablespoons, and a tablespoon holds 3 teaspoons, so a cup is 48 teaspoons. A metric cup of 250 ml is about 16.7 metric tablespoons of 15 ml.

Does the converter send my recipe anywhere?

No. The ingredient table is part of the page and every conversion runs in your browser; nothing you type is uploaded or stored.