Convert Caster Sugar from Grams to Cup

How many cups is 100 grams of caster sugar?

100 grams of caster sugar (castor sugar) is 0.44 cups. 200 grams of caster sugar is 0.89 cups. 225 grams of caster sugar is 1 cup. 500 grams of caster sugar is 2.22 cups. Use the converter below for any amount.

  • These figures use the metric cup (250 ml), so 1 cup is 225 g. A US cup is slightly smaller at 240 ml and holds about 216 g. Use the US 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 →

Caster sugar, also known as superfine or castor sugar, is a key ingredient in many baking recipes due to its fine texture and quick-dissolving properties. Commonly used in cakes, meringues, and desserts, it sits between granulated sugar and powdered sugar in terms of texture. One metric cup (250 ml) of caster sugar weighs around 225 grams or 7.94 ounces.

Since baking is a precise science, even small differences in sugar quantity can affect the final outcome, from texture and sweetness to structure. This page helps you convert caster sugar between grams, cups, tablespoons, and more so that you can follow any recipe confidently, no matter what measurement system it uses.

Also known as

  • castor sugar
  • Superfine Sugar
  • Baker's Sugar
  • Bar Sugar

Standard granulated sugar has larger crystals than caster sugar, so it dissolves more slowly in batters and meringues. They are close in weight (200 g vs 225 g per cup) and swap 1:1 by volume in most recipes, though caster gives a smoother result. See what 100 grams of sugar is in cups.

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 what 100 grams of raw sugar is in cups.

Out of caster sugar? See caster sugar substitutes →

No scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.

Weigh it exact, get a scale

Caster Sugar Measurement Converter

Enter a value and pick your units.

Result

1.11 Cup

Common Caster Sugar Conversions

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

GramsCups
50 g0.22 cups
100 g0.44 cups
125 g0.56 cups
150 g0.67 cups
175 g0.78 cups
200 g0.89 cups
225 g1 cup
250 g1.11 cups
300 g1.33 cups
400 g1.78 cups
450 g2 cups
500 g2.22 cups

Caster Sugar Conversion Chart

The conversion chart below gives a quick reference for converting caster sugar from Grams to Cup and other measurements.

gramscupounceslbkgcup(US)tbsptsp
50 g0.22 cup1.76 oz0.11 lb0.05 kg0.23 cup (US)3.7 tbsp11.11 tsp
100 g0.44 cup3.53 oz0.22 lb0.1 kg0.46 cup (US)7.41 tbsp22.22 tsp
125 g0.56 cup4.41 oz0.28 lb0.13 kg0.58 cup (US)9.26 tbsp27.78 tsp
150 g0.67 cup5.29 oz0.33 lb0.15 kg0.69 cup (US)11.11 tbsp33.33 tsp
175 g0.78 cup6.18 oz0.39 lb0.18 kg0.81 cup (US)12.96 tbsp38.89 tsp
200 g0.89 cup7.06 oz0.44 lb0.2 kg0.93 cup (US)14.81 tbsp44.44 tsp
225 g1 cup7.94 oz0.5 lb0.23 kg1.04 cup (US)16.67 tbsp50 tsp
250 g1.11 cup8.82 oz0.55 lb0.25 kg1.16 cup (US)18.52 tbsp55.56 tsp
300 g1.33 cup10.59 oz0.66 lb0.3 kg1.39 cup (US)22.22 tbsp66.67 tsp
400 g1.78 cup14.12 oz0.88 lb0.4 kg1.85 cup (US)29.63 tbsp88.89 tsp
450 g2 cup15.88 oz0.99 lb0.45 kg2.08 cup (US)33.33 tbsp100 tsp
500 g2.22 cup17.64 oz1.1 lb0.5 kg2.31 cup (US)37.04 tbsp111.11 tsp

For grams to cups with a different ingredient, use the grams to cups converter for a quick-reference table.

For the reverse conversion, see 1 cup of caster sugar in grams.

Frequently Asked Questions

How many cups is 100 grams of caster sugar?
100 grams of caster sugar is 0.44 cups. The conversion is fixed, so 50 grams is 0.22 cups and 200 grams is 0.89 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones. Open the caster sugar converter
How many cups is 200 grams of caster sugar?
200 grams of caster sugar is 0.89 cups. The conversion is fixed, so 100 grams is 0.44 cups and 400 grams is 1.78 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
What is 225g caster sugar in cups?
225 grams of caster sugar is 1 cup. The conversion is fixed, so 112.5 grams is 0.5 cups and 450 grams is 2 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
What is 500g caster sugar in cups?
500 grams of caster sugar is 2.22 cups. The conversion is fixed, so 250 grams is 1.11 cups and 1 kg is 4.44 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
How much is 100 grams of castor sugar in cups?
Castor sugar is another name for caster sugar, so 100 grams of castor sugar is 0.44 cups, exactly the same as caster sugar. The figure does not change with the name: 200 grams is 0.89 cups and 50 grams is 0.22 cups. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are caster sugar and castor sugar the same thing?
Yes. Castor sugar is another name for caster sugar, so they are the same ingredient and convert identically. 100 grams of caster sugar is 0.44 cups under either name, and 200 grams is 0.89 cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.

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