Cups to Grams of Sugar Converter (cup to g)

Sugar in American recipes is measured by the cup, while a kitchen scale, a nutrition label or a recipe from most other countries gives grams. This converter treats a US cup of white granulated sugar as 200 g, the portion weight listed by USDA, which works out to 12.5 g per tablespoon. That figure is an assumption about how densely sugar sits in a cup, not a fixed property like the volume of the cup itself.

Granulated sugar flows freely and levels off easily, though tapping or shaking the cup still settles it and adds weight. Brown sugar is usually pressed into the cup and powdered sugar is full of air, so neither fits the 200 g figure; the cups to grams sugar converter has separate settings for them. Caster or superfine sugar, with its smaller crystals, is not covered here either.

How to use this tool

1. Type a value in the Cup box to see it in grams of sugar, or type in the Gram of Sugar box to convert the other way.
2. Press ⇄ to swap the two units, or Load example for a typical value.
3. Check the charts below for common values; for other units, open the Cooking Measure converter.

Formula

grams of sugar = cups × 200 (granulated sugar, USDA)

cups = grams of sugar ÷ 200 (granulated sugar, USDA)

Both factors come from the converter's own definitions: 1 gram of sugar = 0.005 cups and 1 cup = 200 grams of sugar (shown to 12 significant digits).

Example

Two conversions worked with the same factors the converter uses:

0.75 cup = 150 g sugar

300 g sugar = 1.5 cup

Cup to Gram of Sugar chart

Common values from cups to grams of sugar, rounded to four decimal places.

Gram of Sugar to Cup chart

The reverse direction for values people often look up.

Sugar measured by the cup

Quick mental estimate

Double the cups and add two zeros: 1½ cups → 3 → 300 g, and ¾ cup → 1.5 → 150 g. Because the converter uses exactly 200 g per cup, the shortcut gives the same answer as the chart rather than an estimate of it.

Use the converter or the charts when the exact figure matters.

The two units

Cup (cup): The US customary cup used in American recipes holds 8 US fluid ounces or 16 tablespoons, exactly 236.5882365 mL. US nutrition labels round it to 240 mL, and the metric cup used in Australia and many other countries is 250 mL.

Gram of Sugar (g sugar): Grams of white granulated sugar, converted at the USDA portion weight of 200 g per US cup (about 0.845 g/mL, or 12.5 g per tablespoon). Powdered and brown sugar pack differently, so these figures do not apply to them.