Enter a measure of sugar in cups, tablespoons or teaspoons, pick the kind of sugar, and get its weight in grams and ounces. Fractions like 2/3 or 1 1/2 are fine.
Last updated:
Decimals or fractions: 0.75, 2/3, 1 1/2, ½
g/cup
Weigh one level cup of your sugar once and enter it here.
Cup size
Enter your values to see the result.
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How to use the Cups of Sugar to Grams
Type the amount from your recipe, for example 3/4 or 1 1/2.
Choose the unit: cups, tablespoons, teaspoons or milliliters.
Pick the type of sugar. For brown sugar, choose packed if the recipe says "firmly packed".
Select the cup size: US for American recipes, metric for Australian, NZ or Canadian recipes using 250 ml cups.
Press Convert and read the grams, or use the table for other common measures.
How cups of sugar convert to grams
A cup is a measure of volume, so the weight of a cup of sugar depends on how dense the sugar is and how it is filled. The converter uses a fixed weight per level US cup (236.59 ml) for each sugar type and multiplies:
grams = cups × grams per cup, with 1 tablespoon = 1/16 cup and 1 teaspoon = 1/48 cup. For a 250 ml metric cup the weight is scaled by 250 ÷ 236.59.
Example: 3/4 cup of packed brown sugar = 0.75 × 220 = 165 g.
Sugar weights per cup (reference)
Sugar
1 cup
1/2 cup
1/4 cup
1 tbsp
Granulated white
200 g
100 g
50 g
12.5 g
Caster / superfine
225 g
112.5 g
56 g
14 g
Brown, firmly packed
220 g
110 g
55 g
13.75 g
Brown, loosely spooned
145 g
72.5 g
36 g
9 g
Powdered, unsifted
120 g
60 g
30 g
7.5 g
Powdered, sifted
100 g
50 g
25 g
6.25 g
Coconut sugar
~160 g
~80 g
~40 g
~10 g
Turbinado / demerara
~180 g
~90 g
~45 g
~11 g
Granulated, brown and powdered values follow USDA FoodData Central household measures. Caster, coconut and raw sugars vary by brand and crystal size, so they are approximate; published figures range from about 190–225 g for caster and 150–180 g for coconut sugar.
Tips for measuring sugar accurately
Granulated sugar: scoop and level with a straight edge. It flows freely, so the method matters less than with flour.
Brown sugar: when a recipe says "packed", press it into the cup until it holds its shape when turned out. That is what 220 g assumes.
Powdered sugar: check whether the recipe says "sifted" before or after measuring. "1 cup sifted powdered sugar" (sift, then measure) is about 100 g; "1 cup powdered sugar, sifted" (measure, then sift) is about 120 g.
Swapping sugars: replacing granulated with coconut sugar cup for cup gives less sugar by weight. Converting both to grams lets you swap by weight instead.
Best accuracy: weigh one level cup of the sugar you actually use and enter it with the custom option.
Frequently asked questions
How many grams is 1 cup of sugar?
One US cup of granulated white sugar weighs about 200 grams (7.05 oz). This is the USDA reference value and the one most American recipes assume.
How many grams is 1 cup of brown sugar?
Packed brown sugar weighs about 220 grams per US cup, because pressing it into the cup removes air. Loosely spooned brown sugar is much lighter, about 145 grams per cup.
How many grams is 1 cup of powdered sugar?
Unsifted powdered (icing or confectioners') sugar weighs about 120 grams per US cup. Sifted powdered sugar is fluffier and weighs about 100 grams per cup.
How many grams of sugar are in a tablespoon?
A US tablespoon is 1/16 of a cup, so one tablespoon of granulated sugar is about 12.5 grams and one teaspoon about 4.2 grams.
How many grams is 3/4 cup or 1/2 cup of sugar?
For granulated sugar, 3/4 cup is about 150 g, 2/3 cup about 133 g, 1/2 cup about 100 g and 1/3 cup about 67 g.
Why do caster and coconut sugar weigh differently from granulated sugar?
Finer crystals pack more tightly into a cup, so caster (superfine) sugar is often listed around 225 g per cup, while coarser, less dense sugars such as coconut sugar weigh less, roughly 150–180 g depending on the brand. For these, weighing one cup of your own sugar and using the custom option is most accurate.
Does a metric cup change the grams?
Yes. A metric cup holds 250 ml instead of 236.6 ml, about 5.7% more, so one metric cup of granulated sugar weighs about 211 g. Choose Metric cup for recipes from Australia, New Zealand or Canada.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.