Grams to cups converter

Why grams and cups don't convert directly

A cup measures volume; a gram measures weight. How many grams fit in a cup depends on the ingredient's density: a cup of flour weighs about 125 g, a cup of sugar 200 g and a cup of honey 339 g. That is why a conversion needs the ingredient.

Common conversions (1 US cup)

Ingredient	Grams
All-purpose flour	125
Granulated sugar	200
Brown sugar, packed	220
Butter	227
Milk	244
Water	237
Rolled oats	81

Worked examples

• 250 g of flour is 2 cups (32 tablespoons).
• 1½ cups of sugar is 300 g.

Measuring flour

The gram weights assume flour is spooned into the cup and levelled. Scooping straight from the bag packs it down and can add a quarter more flour, which is the most common reason baked goods turn out dry. A kitchen scale avoids the problem.

The cup here is the US customary cup (236.6 mL). Metric cups in Australia and Canada hold 250 mL, so their gram weights are about 6% higher.

The page uses a reference weight per US cup for each ingredient, from the USDA FoodData Central household measures. Grams are divided by that weight to get cups, or cups multiplied by it to get grams. Tablespoons are cups times 16 and ounces are grams divided by 28.35. Everything runs in your browser.