How much is 1 US cup in grams?

1 US cup of caster sugar is 216 grams. The conversion scales in a straight line, so 0.5 US cups is 108 grams and 2 US cups is 432 grams. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact grams reading at any amount.

How do US cups and tablespoons compare as units?

US cups and tablespoons are both volume units, so the conversion between them does not vary by ingredient. One metric cup holds about 16.67 tablespoons or 50 teaspoons, and the ratio stays fixed regardless of what you are measuring. The volume converter handles any amount between cups, tablespoons, teaspoons, and millilitres.

Convert Caster Sugar from Cup (US)

How much is 1 US cup of caster sugar?

1 US cup of caster sugar (castor sugar) is 216 grams, about 7.62 ounces. 0.5 US cups of caster sugar is 108 grams and 2 US cups is 432 grams. Use the converter below for any amount.

These figures use the US cup (240 ml), so 1 cup is 216 g. A metric cup is slightly larger at 250 ml and holds about 225 g. Use the metric cup converter →
Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →

More about measuring Caster Sugar

Caster Sugar substitutes

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Caster Sugar Measurement Converter

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Caster Sugar Calculators & Baking Tools

Working with caster sugar? These tools handle the jobs a converter cannot.

Jam and Marmalade Calculator Check the sugar a batch of preserve needs and how many jars it fills.
Pan Size Converter Rescale a recipe for a different cake tin size.
Oven to Air Fryer Converter Match the temperature and time when you swap the oven for an air fryer, fan oven, or slow cooker.
Recipe Scaler Scale any recipe up or down and keep every ingredient in ratio.
Volume Converter Switch between cups, tablespoons, teaspoons and millilitres for any ingredient.

Common Caster Sugar Conversions

Here are the most common caster sugar conversions from cups (US) to grams.

Cups (US)	Grams
0.25 cups (US)	54 g
0.5 cups (US)	108 g
0.75 cups (US)	162 g
1 cup (US)	216 g
1.25 cups (US)	270 g
1.5 cups (US)	324 g
2 cups (US)	432 g
2.5 cups (US)	540 g
3 cups (US)	648 g

Caster Sugar Conversion Chart

The conversion chart below gives a quick reference for converting caster sugar from Cup (US) to other measurements.

cup(US)	cup	grams	ounces	lb	kg	tbsp	tsp
0.25 cup (US)	0.24 cup	54 g	1.91 oz	0.12 lb	0.05 kg	4 tbsp	12 tsp
0.5 cup (US)	0.48 cup	108 g	3.81 oz	0.24 lb	0.11 kg	8 tbsp	24 tsp
1 cup (US)	0.96 cup	216 g	7.62 oz	0.48 lb	0.22 kg	16 tbsp	48 tsp
2 cup (US)	1.92 cup	432 g	15.24 oz	0.95 lb	0.43 kg	32 tbsp	96 tsp

Frequently Asked Questions

How much is 1 US cup of caster sugar?: 1 US cup of caster sugar is 216 grams, or 7.62 ounces. The ratio is fixed, so 0.5 US cups of caster sugar is 108 grams and 2 US cups is 432 grams. Whatever unit your recipe uses, enter the amount in the converter above or read the conversion chart on this page for the most common quantities. Open the caster sugar converter
How much is 1 US cup in grams?: 1 US cup of caster sugar is 216 grams. The conversion scales in a straight line, so 0.5 US cups is 108 grams and 2 US cups is 432 grams. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact grams reading at any amount.
How do US cups and tablespoons compare as units?: US cups and tablespoons are both volume units, so the conversion between them does not vary by ingredient. One metric cup holds about 16.67 tablespoons or 50 teaspoons, and the ratio stays fixed regardless of what you are measuring. The volume converter handles any amount between cups, tablespoons, teaspoons, and millilitres. Cups (US) to tablespoons

Measurement Options

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Caster Sugar from Cup (US) to Ounces

Related to Caster Sugar

Sugar

Granulated sugar swaps 1:1 for caster sugar in most recipes, though its larger crystals dissolve more slowly. For meringues or smooth sponges, pulse granulated sugar in a food processor for a few seconds to bring it closer to caster's finer grain. See our Sugar converter.

Icing Sugar

Icing sugar is milled far finer and packs much lighter than caster (125 g vs 225 g per cup), so it is not a 1:1 swap. Use it only where a powder works, such as uncooked frostings and dusting, not for creaming into a cake batter. See our Icing Sugar converter.

Brown Sugar

Brown sugar is caster sugar's opposite in the creaming bowl: damp, clumping, and pressed into the cup instead of levelled off. Swap it in and the molasses brings moisture with it, so a sponge built for caster comes out denser, darker, and slower to dry out. See our Brown Sugar converter.

Raw Sugar

Raw sugar has large, coarse crystals that dissolve slowly, the opposite of fine caster sugar. It packs lighter (200 g vs 225 g per cup), so it is not a 1:1 swap by volume; weigh when substituting. See our Raw Sugar converter.

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