How many grams is 1 tablespoon of caster sugar?

1 tablespoon of caster sugar is 13.5 grams. The conversion scales in a straight line, so 0.5 tablespoons is 6.75 grams and 2 tablespoons is 27 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 many tablespoons of caster sugar is 13.5 grams?

13.5 grams of caster sugar is 1 tablespoon. The conversion works the same in reverse, so you can switch between tablespoons and grams without changing the result. This helps when a recipe lists one unit but you would rather measure in the other. The converter above and the chart below cover both directions for any amount.

Convert Caster Sugar from Tablespoon

How much is 1 tablespoon of caster sugar?

1 tablespoon of caster sugar (castor sugar) is 13.5 grams, about 0.48 ounces. 0.5 tablespoons of caster sugar is 6.75 grams and 2 tablespoons is 27 grams. Use the converter below for any amount.

A tablespoon here is the 15 ml metric standard, about 16.67 to a metric cup, the same size as a UK tablespoon. A US tablespoon is smaller at 14.79 ml, so US cooks measuring with US spoons need slightly more. An Australian tablespoon is larger at 20 ml, so it holds about a third more. When tablespoon size matters →
A little over or under won't ruin the bake. An extra spoon mainly makes it sweeter.

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 our Sugar converter.

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.

Out of caster sugar? See caster sugar substitutes →

No measuring spoons? The tool below gets you close, and a measuring spoon set keeps small amounts accurate.

Caster Sugar Measurement Converter

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Common Caster Sugar Conversions

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

Tablespoons	Grams
1 tbsp	13.5 g
2 tbsp	27 g
3 tbsp	40.5 g
4 tbsp	54 g
6 tbsp	81 g
8 tbsp	108 g
10 tbsp	135 g
12 tbsp	162 g
16 tbsp	216 g

Caster Sugar Conversion Chart

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

tbsp	cup	grams	ounces	cup(US)	tsp
1 tbsp	0.06 cup	13.5 g	0.48 oz	0.06 cup (US)	3 tsp
2 tbsp	0.12 cup	27 g	0.95 oz	0.13 cup (US)	6 tsp
3 tbsp	0.18 cup	40.5 g	1.43 oz	0.19 cup (US)	9 tsp
4 tbsp	0.24 cup	54 g	1.91 oz	0.25 cup (US)	12 tsp

Frequently Asked Questions

How much is 1 tablespoon of caster sugar?: 1 tablespoon of caster sugar is 13.5 grams, or 0.48 ounces. The ratio is fixed, so 0.5 tablespoons of caster sugar is 6.75 grams and 2 tablespoons is 27 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 many grams is 1 tablespoon of caster sugar?: 1 tablespoon of caster sugar is 13.5 grams. The conversion scales in a straight line, so 0.5 tablespoons is 6.75 grams and 2 tablespoons is 27 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 many tablespoons of caster sugar is 13.5 grams?: 13.5 grams of caster sugar is 1 tablespoon. The conversion works the same in reverse, so you can switch between tablespoons and grams without changing the result. This helps when a recipe lists one unit but you would rather measure in the other. The converter above and the chart below cover both directions for any amount.

Measurement Options

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