Caster sugar converter

Caster sugar is measured as loose crystals, not packed like brown sugar. A heaped or pressed cup can add more than the recipe’s level measure intends.

Looking for another ingredient?
Caster sugar
100 g = ½ cup
Grams Cups Ounces
1 g 1 g (< ½ tsp) 0.04
5 g ≈ 1 tsp 0.18
10 g ≈ 2 ½ tsp 0.35
25 g ⅛ cup 0.88
50 g ¼ cup 1.76
100 g ½ cup 3.53
250 g 1 ¼ cups 8.82

Reference used in this table: 1 cup (236.6 ml) ≈ 200 g

Level the sugar without compressing it

Pour or spoon caster sugar into the cup and sweep off the excess. Use the recipe’s gram quantity directly if one is provided.

Icing sugar is a powder with a different cup reference. Do not use its conversion simply because both sugars are finely textured.

FAQ – Ingredient Conversion

How accurate are the cup and weight conversions?

Weight conversions use fixed unit factors. Cup and spoon estimates depend on the stated ingredient form and cup size. Milliliters measure volume; converting them to grams also needs an ingredient-specific reference. Without a reliable cup reference, the calculator uses grams and ounces.

Why do some small amounts convert to “≈ tsp” or “≈ tbsp”?

Small volumes may be shown as approximate spoon measures. Below half a teaspoon, the measured amount stays visible instead of being rounded up. Use a suitable scale or follow the recipe’s original measure for these small quantities.

Are the ounce (oz) and pound (lb) conversions exact?

The conversion factors between grams, ounces and pounds are exact and do not depend on the ingredient. The displayed result is rounded for readability.

Why do I see fractions like ⅛, ¼, or ⅜ in the results?

Many kitchen measurements are traditionally shown using simple fractions. Displaying amounts like “⅛ cup” or “¼ cup” makes the conversions easier to read and measure accurately with standard cups and spoons.

Why might some values look slightly different between ingredients?

Cup measurements depend on how dense an ingredient is. For example, 1 cup of flour does not weigh the same as 1 cup of sugar. Small differences also occur due to natural variations like brand, moisture, or packing. We use consistent reference values so your conversions stay reliable.