Caster Sugar Converter
Weigh fine caster sugar by the spoon.
Granulated White Sugar
Why Grams to Teaspoon Differs by Ingredient
A teaspoon is a unit of volume (~4.93 mL), whereas a gram is a unit of mass/weight. Therefore, 1 tsp of dense table salt weighs ~5.7g, whereas 1 tsp of airy powdered flour weighs only ~2.6g.
Kitchen Ingredient Density Directory
Select any ingredient below to immediately calculate and update the visual spoon rendering.
Quick Grams to Teaspoon Reference Charts
Common Sugar Grams to Teaspoon
| Grams | Teaspoons | Fraction |
|---|---|---|
| 2.1 g | 0.5 tsp | ½ tsp |
| 4.2 g | 1.0 tsp | 1 tsp |
| 8.3 g | 2.0 tsp | 2 tsp |
| 12.5 g | 3.0 tsp | 1 tbsp (3 tsp) |
| 25.0 g | 6.0 tsp | 2 tbsp |
Table Salt Grams to Teaspoon
| Grams | Teaspoons | Fraction |
|---|---|---|
| 1.4 g | 0.25 tsp | ¼ tsp |
| 2.8 g | 0.5 tsp | ½ tsp |
| 5.7 g | 1.0 tsp | 1 tsp |
| 11.4 g | 2.0 tsp | 2 tsp |
| 17.1 g | 3.0 tsp | 1 tbsp |
All-Purpose Flour Grams to Teaspoon
| Grams | Teaspoons | Fraction |
|---|---|---|
| 1.3 g | 0.5 tsp | ½ tsp |
| 2.6 g | 1.0 tsp | 1 tsp |
| 5.2 g | 2.0 tsp | 2 tsp |
| 7.8 g | 3.0 tsp | 1 tbsp |
| 31.2 g | 12.0 tsp | ¼ cup (4 tbsp) |
How Caster Sugar Converter Works?
The Caster Sugar Converter works by dividing grams of caster sugar by 4.35 g per level US teaspoon. Fine caster crystals pack tighter than granulated sugar, so each teaspoon weighs 4% more.
Check the label
Caster sugar sells as "superfine sugar" in the US and "castor sugar" in older UK books. All three names describe the same fine sugar.
Enter grams
Type the caster sugar weight from the recipe, such as 100 g for a sponge.
Spoon and level gently
Spoon the fine crystals in without tapping. Tapping settles caster sugar and adds weight.
Caster Sugar Converter Formula
The Caster Sugar Converter formula is teaspoons = grams of caster sugar ÷ 4.35.
tsp = g ÷ 4.35 | 1 tbsp = 13.05 g | 1 US cup ≈ 209 g
- 15 g of caster sugar ÷ 4.35 = 3.45 tsp, about 1 tbsp + ½ tsp.
- 50 g of caster sugar ÷ 4.35 = 11.49 tsp, close to 3 ¾ tbsp.
- 2 tsp of caster sugar × 4.35 = 8.7 g.
Caster Sugar Converter Conversion Table
The Caster Sugar Converter conversion table shows 11 caster sugar weights in teaspoons, tablespoons and kitchen fractions at 4.35 g per US teaspoon.
| Grams (g) | Ounces (oz) | Teaspoons (tsp) | Nearest Spoon | Tablespoons (tbsp) |
|---|---|---|---|---|
| 1 g | 0.035 oz | 0.23 tsp | ¼ tsp | 0.08 tbsp |
| 2 g | 0.071 oz | 0.46 tsp | ½ tsp | 0.15 tbsp |
| 3 g | 0.106 oz | 0.69 tsp | ⅔ tsp | 0.23 tbsp |
| 4 g | 0.141 oz | 0.92 tsp | ⅞ tsp | 0.31 tbsp |
| 5 g | 0.176 oz | 1.15 tsp | 1 ⅛ tsp | 0.38 tbsp |
| 10 g | 0.353 oz | 2.3 tsp | 2 ⅓ tsp | 0.77 tbsp |
| 15 g | 0.529 oz | 3.45 tsp | 3 ½ tsp | 1.15 tbsp |
| 20 g | 0.705 oz | 4.6 tsp | 4 ⅔ tsp | 1.53 tbsp |
| 25 g | 0.882 oz | 5.75 tsp | 5 ¾ tsp | 1.92 tbsp |
| 50 g | 1.764 oz | 11.49 tsp | 11 ½ tsp | 3.83 tbsp |
| 100 g | 3.527 oz | 22.99 tsp | 23 tsp | 7.66 tbsp |
What is Caster Sugar Converter?
The Caster Sugar Converter is a calculator that converts grams of caster (superfine) sugar into teaspoons. Caster sugar has crystals of about 0.2 mm to 0.35 mm, roughly half the size of granulated sugar.
British and Australian baking recipes call for caster sugar in sponges, meringues and shortbread, where small crystals dissolve fast in butter and egg whites. Blitzing granulated sugar in a food processor for 30 seconds makes a home substitute for caster sugar.
What are the uses of Caster Sugar Converter?
There are 4 main uses of the Caster Sugar Converter: meringues, sponge cakes, cocktails, and custards.
Meringues
Swiss and French meringues use 50 g of caster sugar per egg white, about 11 ½ tsp.
Sponge cakes
A Victoria sponge creams caster sugar into butter. The converter turns small top-up amounts into spoons.
Cocktails
Bartenders dissolve 1 tsp (4.35 g) of caster sugar in cold drinks where granulated sugar stays gritty.
Custards
Crème anglaise recipes use 20 g of caster sugar per yolk, close to 4 ⅝ tsp.
Caster Sugar Converter Measuring Tips
- Caster sugar crystals are smaller than granulated sugar, allowing closer packing in spoons (~4.35 g/tsp).
- Dissolves quickly in meringues, sponge cakes, and cocktails.