Grams to Cups Converter logo Grams to Cups Converter

🍬 Sugars and Sweeteners

Grams of Caster Sugar to Cups

1 US cup of caster sugar weighs 210 grams (g), or 7.4 ounces (oz), so 100 grams of caster sugar equals 0.48 cups. To convert grams of caster sugar to cups, divide the grams by 210.

Caster sugar weighs about 210 grams per US cup, slightly denser than regular granulated sugar since the finer crystals pack with less air between them. Level it off the same way you would granulated sugar.

Caster sugar and superfine sugar are the same fine-crystal white sugar. Caster sugar is the UK name, and 1 US cup weighs 210 g.

This page covers the caster sugar grams to cups calculator, a chart from 10 g to 1,000 g, 6 common gram amounts, a cups to grams chart, 4 measuring steps, and a comparison with 11 other sugars and sweeteners.

1 cup
210 g
7.4 oz
½ cup
105 g
3.7 oz
1 tablespoon (tbsp)
13.1 g
1 tsp = 4.4 g
100 g
0.48 cups
½ cup

Caster Sugar Grams to Cups Calculator

Enter grams of caster sugar to get cups, tablespoons, milliliters (ml), ounces, and pounds. The calculator uses 210 g per US cup (236.6 ml).

Tip: Preset to caster sugar. Select another ingredient to compare.

g
Precision
Cup size 1 US cup = 236.6 ml
Caster sugar
0.48
US cups

100g = 0.48 cups (≈ ½ cup)

7.62
Tablespoons
112.66
Millilitres
3.53
Ounces
0.22
Pounds
Formula 100 g ÷ 210 g/cup = 0.48 cups

Caster Sugar Grams to Cups Conversion Chart

The caster sugar grams to cups chart converts 24 amounts from 10 g to 1,000 g into cups, a cup measure with tablespoons, teaspoons (tsp), and ounces. The highlighted row equals 1 US cup.

Grams Cups Cup measure Tbsp Tsp Oz
10 g 0.05 1 tbsp 0.8 2.3 0.4
15 g 0.07 1 tbsp 1.1 3.4 0.5
20 g 0.1 1.5 tbsp 1.5 4.6 0.7
25 g 0.12 2 tbsp 1.9 5.7 0.9
30 g 0.14 2.5 tbsp 2.3 6.9 1.1
50 g 0.24 ¼ cup 3.8 11.4 1.8
60 g 0.29 ¼ cup + 0.5 tbsp 4.6 13.7 2.1
75 g 0.36 ⅓ cup + 0.5 tbsp 5.7 17.1 2.6
100 g 0.48 ½ cup 7.6 22.9 3.5
120 g 0.57 ½ cup + 1 tbsp 9.1 27.4 4.2
125 g 0.6 ½ cup + 1.5 tbsp 9.5 28.6 4.4
150 g 0.71 ⅔ cup + 1 tbsp 11.4 34.3 5.3
175 g 0.83 ¾ cup + 1.5 tbsp 13.3 40 6.2
200 g 0.95 ¾ cup + 3 tbsp 15.2 45.7 7.1
210 g 1 1 cup 16 48 7.4
225 g 1.07 1 cup + 1 tbsp 17.1 51.4 7.9
250 g 1.19 1 cup + 3 tbsp 19 57.1 8.8
300 g 1.43 1 ⅓ cups + 1.5 tbsp 22.9 68.6 10.6
350 g 1.67 1 ⅔ cups 26.7 80 12.3
400 g 1.9 1 ¾ cups + 2.5 tbsp 30.5 91.4 14.1
450 g 2.14 2 cups + 2.5 tbsp 34.3 102.9 15.9
500 g 2.38 2 ⅓ cups + 1 tbsp 38.1 114.3 17.6
750 g 3.57 3 ½ cups + 1 tbsp 57.1 171.4 26.5
1,000 g 4.76 4 ¾ cups 76.2 228.6 35.3

Values use US cups and the measuring method in the steps below. Cup measures round to the nearest ½ tablespoon.

How Many Cups Is 100, 200, 250, or 500 Grams of Caster Sugar?

6 common recipe amounts of caster sugar convert to cups as follows, with the cup and tablespoon measure for each.

Caster Sugar Cups to Grams Chart

The caster sugar cups to grams chart lists the weight of 13 US measures, from 1 teaspoon to 4 cups, in grams and ounces.

US measure Grams Ounces
1 teaspoon 4.4 g 0.2 oz
1 tablespoon 13.1 g 0.5 oz
⅛ cup 26.3 g 0.9 oz
¼ cup 52.5 g 1.9 oz
⅓ cup 70 g 2.5 oz
½ cup 105 g 3.7 oz
⅔ cup 140 g 4.9 oz
¾ cup 157.5 g 5.6 oz
1 cup 210 g 7.4 oz
1 ½ cups 315 g 11.1 oz
2 cups 420 g 14.8 oz
3 cups 630 g 22.2 oz
4 cups 840 g 29.6 oz

Convert any cup amount with the cups to grams converter.

How to Measure Caster Sugar Accurately

To measure caster sugar accurately, fill a dry measuring cup and level the top without shaking the cup. Shaking settles the pieces and adds weight.

  1. 1

    Fill a dry measuring cup

    Pour or spoon the caster sugar into a dry measuring cup or spoon until it overflows.

  2. 2

    Keep the cup still

    Do not tap or shake the cup. Shaking settles the pieces into the gaps and adds weight.

  3. 3

    Level the top

    Sweep a straight edge across the rim to remove the excess.

  4. 4

    Weigh it for an exact amount

    Set a bowl on a kitchen scale, press tare, and add caster sugar until the scale shows the gram amount in the recipe.

Caster Sugar vs Other Sugars and Sweeteners: Grams per Cup

Of 11 other sugars and sweeteners, 7 weigh less per cup than caster sugar and 4 weigh more. Swap sugars and sweeteners by weight, not by cup, since the same cup holds a different number of grams.

Ingredient Grams per cup vs caster sugar 100 g in cups
Powdered sugar (sifted) 100 g −110 g 1
Powdered sugar 120 g −90 g 0.83
Brown sugar (loose) 180 g −30 g 0.56
Coconut sugar 180 g −30 g 0.56
Granulated sugar 200 g −10 g 0.5
Turbinado sugar 200 g −10 g 0.5
Demerara sugar 200 g −10 g 0.5
Caster sugar 210 g — 0.48
Brown sugar (packed) 220 g +10 g 0.45
Maple syrup 322 g +112 g 0.31
Molasses 328 g +118 g 0.3
Honey 340 g +130 g 0.29

Caster Sugar Grams to Cups FAQ

How many grams are in 1 cup of caster sugar?
1 US cup of caster sugar weighs 210 grams (7.4 oz). ½ cup weighs 105 g, and ¼ cup weighs 52.5 g.
How many cups is 100 grams of caster sugar?
100 grams of caster sugar is 0.48 cups, or ½ cup with a standard measuring cup set. 100 g equals 7.6 tablespoons and 3.5 oz.
How many cups is 200 grams of caster sugar?
200 grams of caster sugar is 0.95 cups, or ¾ cup + 3 tbsp with a standard measuring cup set. 200 g equals 15.2 tablespoons and 7.1 oz.
How many cups is 250 grams of caster sugar?
250 grams of caster sugar is 1.19 cups, or 1 cup + 3 tbsp with a standard measuring cup set. 250 g equals 19 tablespoons and 8.8 oz.
How many cups is 500 grams of caster sugar?
500 grams of caster sugar is 2.38 cups, or 2 ⅓ cups + 1 tbsp with a standard measuring cup set. 500 g equals 38.1 tablespoons and 17.6 oz.
How many grams of caster sugar are in 1 tablespoon?
1 tablespoon of caster sugar weighs 13.1 g, and 1 teaspoon weighs 4.4 g. A US cup holds 16 tablespoons and 48 teaspoons.
What is 2 cups of caster sugar in grams?
2 cups of caster sugar is 420 grams (14.8 oz). 3 cups is 630 g, and 4 cups is 840 g.
Does 1 cup of caster sugar weigh the same as 1 cup of water?
No, 1 cup of caster sugar weighs 210 g and 1 cup of water weighs 236.6 g. A cup of caster sugar is 26.6 g lighter than a cup of water.
Is caster sugar the same as superfine sugar?
Yes, caster sugar and superfine sugar are the same fine-crystal white sugar. Caster sugar is the UK name, and 1 US cup weighs 210 g.
Is it better to measure caster sugar in grams or cups?
Grams are more accurate for caster sugar. A kitchen scale reads the same weight every time, while a cup of caster sugar changes weight with packing, settling, and how the cup is filled.

Related Grams to Cups Conversions

Convert other sugars and sweeteners, check a fixed gram amount across every ingredient, or open a printable chart.

Other Sugars and Sweeteners Grams to Cups

Popular Gram Amounts

Charts, Tools, and Guides