Convert Caster Sugar from Kilograms to Cup
How many cups is 1 kg of caster sugar?
1 kg of caster sugar (castor sugar) is 4.44 cups. 2 kg of caster sugar is 8.89 cups. 1/2 kg of caster sugar is 2.22 cups. 1/4 kg (0.25 kg) of caster sugar is 1.11 cups. Use the converter below for any amount.
- These figures use the metric cup (250 ml). A US cup is slightly smaller at 240 ml, so it holds a little less.
- 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
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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4.44 CupCaster 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.
Common Caster Sugar Conversions
Here are the most common caster sugar conversions from kilograms to cups.
| Kilograms | Cups |
|---|---|
| 0.5 kg | 2.22 cups |
| 1 kg | 4.44 cups |
| 2 kg | 8.89 cups |
| 3 kg | 13.33 cups |
Frequently Asked Questions
- What is 1 kg of caster sugar in cups?
- 1 kg of caster sugar is 4.44 cups. The ratio is fixed, so 2 kg of caster sugar is 8.89 cups and 0.5 kg is 2.22 cups. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the caster sugar converter
- How many cups is 1.5 kg of caster sugar?
- 1.5 kg of caster sugar is 6.67 cups. The ratio is fixed, so 1 kg of caster sugar is 4.44 cups and 2 kg is 8.89 cups. Type any other amount into the converter above for the exact figure, or use the chart above for the common ones.
- What is 2 kg of caster sugar in cups?
- 2 kg of caster sugar is 8.89 cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 kg of caster sugar is 4.44 cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact cups reading.
- How many kg of caster sugar is 4.44 cups?
- 4.44 cups of caster sugar is 1 kg. The conversion works the same in reverse, so you can switch between cups and kg without changing the result. This helps when a recipe lists kg but you would rather weigh or measure in cups. The converter above and the chart above cover both directions for any amount.
- How much is 1 kg of castor sugar in cups?
- Castor sugar is another name for caster sugar, so 1 kg of castor sugar is 4.44 cups, exactly the same as caster sugar. The figure does not change with the name: 2 kg is 8.89 cups and 0.5 kg is 2.22 cups. 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.
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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