Baking conversions

Cups to Grams Converter for Baking

A cup of flour and a cup of sugar are not the same weight, so one blanket ratio gets you close at best. Pick the ingredient, type the amount — decimals, fractions or a mixed number like 1 1/2 — and this converter gives you the grams (and ounces, tablespoons and teaspoons) using that ingredient's own baking density. Everything runs in your browser; nothing is uploaded, saved or sent anywhere.

Your measurement

The scoop-and-level value the recipe cards use: 500 g of flour is listed as 4 to 4 1/4 cups.

Type a decimal (1.5), a fraction (3/4) or a mixed number (1 1/2) — the fraction characters ½, ⅓, ⅔, ¼ and ¾ work too.

Result

Choose an ingredient, type an amount and press Convert. The gram weight, the ounce weight and the cup, tablespoon and teaspoon equivalents all appear here.

Cup to gram conversion table

The same ingredient, measured out in the amounts a recipe is most likely to ask for. Change the ingredient above and this table follows it.

All-purpose flour, by US cup
CupsGramsOunces
1/430 g1.1 oz
1/340 g1.4 oz
1/260 g2.1 oz
2/380 g2.8 oz
3/490 g3.2 oz
1120 g4.2 oz
1 1/2180 g6.3 oz
2240 g8.5 oz

Weights are estimates from each ingredient's standard baking density, not a measurement of your own cup. How you scoop moves flour by 10–20 g a cup, so if a recipe gives both, follow the grams.

How to use the converter

  1. Pick the ingredient. Flour, sugar, cocoa and honey all weigh different amounts for the same cup, so the ingredient drives the whole result.
  2. Type the amount exactly as the recipe writes it. Decimals (1.5), fractions (3/4) and mixed numbers (1 1/2) are all accepted.
  3. Say what that amount is in. Cups, tablespoons, teaspoons, grams or ounces — the converter works in both directions.
  4. Press Convert. You get the weight in grams and ounces plus the cup, tablespoon and teaspoon equivalents, and you can copy or print the whole result.

Why a cup is not a weight

A US cup is a volume — 236 ml of space — and every ingredient fills that space with a different amount of matter. A cup of water is 236 g, a cup of granulated sugar is about 200 g, and a cup of all-purpose flour is around 120 g when it is spooned in and levelled. That is why "1 cup of flour" and "1 cup of sugar" cannot share one conversion number, and why the recipe cards here print the gram weight next to the cup measure.

Even a single ingredient moves around. Flour settles in the bag, so a cup scooped straight from the bin can weigh 150 g while the same cup spooned in and swept level weighs closer to 120 g. Weighing skips the argument entirely, which is exactly why the recipes here lead with grams.

What this converter does not do

  • It does not weigh anything for you, and it cannot see how you filled the cup — every gram figure is an estimate from a standard density.
  • It does not scale a recipe. Convert one line at a time, or use the gram weights already printed on the recipe cards.
  • It does not sift, pack or melt anything: for brown sugar, pack it into the cup first; for cocoa and powdered sugar, the figures assume unsifted.
  • It does not send your numbers anywhere. There is no account, no history and no network call — close the tab and the numbers are gone.

Questions bakers ask about cups and grams

How many grams are in a cup of flour?

About 120 g for all-purpose or bread flour when the cup is spooned in and levelled, which is the value this converter uses and the value the recipe cards here are written against — 500 g of flour shows up as 4 to 4 1/4 cups. Scoop straight from the bag without levelling and the same cup can hit 150 g, so the honest answer is a range: 120 to 150 g depending on how it was filled. That is exactly why the recipes print the grams first.

Why does a cup of sugar weigh more than a cup of flour?

Because the two ingredients do not pack the same way into the same 236 ml of space. Granulated sugar settles into a dense cup at about 200 g and packed brown sugar at about 213 g, while flour traps air and only reaches about 120 g. Cocoa powder is lighter still at roughly 85 g a cup. One conversion number for every ingredient would be wrong for almost all of them, so this converter keeps a separate density for each.

How do I measure a cup without a scale?

Use a dry measuring cup, not a liquid jug, and spoon the ingredient into it rather than digging the cup into the bag. Fill it until it overflows, then sweep a straight edge — the back of a knife works — across the top. Do not tap the cup on the counter or press the ingredient down unless the recipe says packed, as both add weight. The gram figure the converter gives you is the target; without a scale the cup measure is the closest you can get.

Can I convert tablespoons and teaspoons too?

Yes. A US cup is 16 tablespoons or 48 teaspoons, and the ingredient's density applies to those smaller measures as well — a tablespoon of flour is about 7.5 g, a tablespoon of butter about 14 g. Choose tablespoons or teaspoons as the unit you are converting from, or read the tablespoon and teaspoon lines in the result to convert from a weight back into spoons.

Do these weights work for sourdough starter?

A 100% hydration starter — equal weights of flour and water — weighs about 240 g per cup, and the converter has it as its own ingredient. But starter is the one thing here worth weighing every time: it is the ingredient you feed, keep and build a recipe around, and a cup of starter can swing by 20 g or more depending on how bubbly it is. The starter feeding calculator handles that side of the maths.

Does the converter send my numbers anywhere?

No. Every conversion runs in your browser as you type, on your own device. There is no upload, no account, no stored history and no network request of any kind — the numbers disappear when you close the tab. That is why the page can do its job with JavaScript alone.

Put the numbers to work

Every recipe here lists the grams first and the cups alongside, so you can bake either way. If you are converting because you are feeding a starter rather than filling a cup, the starter feeding calculator does that arithmetic. Otherwise, pick something to bake: