Convert Caster Sugar from Ounces to Teaspoon
How many teaspoons is 1 ounce of caster sugar?
1 ounce of caster sugar (castor sugar) is 6.3 teaspoons. 2 ounces of caster sugar is 12.59 teaspoons. 4 ounces of caster sugar is 25.19 teaspoons. 6 ounces of caster sugar is 37.78 teaspoons. Use the converter below for any amount.
- A teaspoon here is the 5 ml standard, the same in the UK, Europe, and Australia. A US teaspoon is fractionally smaller at about 4.9 ml. When teaspoon size matters →
- A little over or under won't ruin the bake. An extra spoon mainly makes it sweeter.
More about measuring Caster Sugar
Caster Sugar substitutes
Ran out? What to use instead of caster sugar →
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 scaleCaster Sugar Measurement Converter
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6.3 TeaspoonCaster Sugar Calculators & Baking Tools
Working with caster sugar? These tools handle the jobs a converter cannot.
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- 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.
Common Caster Sugar Conversions
Here are the most common caster sugar conversions from ounces to teaspoons.
| Ounces | Teaspoons |
|---|---|
| 1 oz | 6.3 tsp |
| 2 oz | 12.59 tsp |
| 3 oz | 18.89 tsp |
| 4 oz | 25.19 tsp |
| 5 oz | 31.49 tsp |
| 6 oz | 37.78 tsp |
| 8 oz | 50.38 tsp |
| 10 oz | 62.97 tsp |
| 12 oz | 75.57 tsp |
For the reverse conversion, see 1 teaspoon of caster sugar in ounces.
Frequently Asked Questions
- How many teaspoons is 1 ounce of caster sugar?
- 1 ounce of caster sugar is 6.3 teaspoons. The conversion is fixed, so 2 ounces is 12.59 teaspoons and 4 ounces is 25.19 teaspoons. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. 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 teaspoons is 2 ounces of caster sugar?
- 2 ounces of caster sugar is 12.59 teaspoons. The conversion is fixed, so 1 ounce is 6.3 teaspoons and 4 ounces is 25.19 teaspoons. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
- What is 4 oz caster sugar in teaspoons?
- 4 ounces of caster sugar is 25.19 teaspoons. The conversion is fixed, so 1 ounce is 6.3 teaspoons and 2 ounces is 12.59 teaspoons. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
- What is 6 oz caster sugar in teaspoons?
- 6 ounces of caster sugar is 37.78 teaspoons. The conversion is fixed, so 1 ounce is 6.3 teaspoons and 2 ounces is 12.59 teaspoons. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
- How much is 1 ounce of castor sugar in teaspoons?
- Castor sugar is another name for caster sugar, so 1 ounce of castor sugar is 6.3 teaspoons, exactly the same as caster sugar. The figure does not change with the name: 2 ounces is 12.59 teaspoons and 0.5 ounces is 3.15 teaspoons. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
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.
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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