Icing sugar (powdered sugar or confectioners' sugar) is very finely ground white sugar, sometimes with a small amount of cornflour added to prevent caking. It is nutritionally identical to white sugar (~400 kcal/100g, almost entirely sucrose) and is used primarily for icings, frostings, dusting, and recipes where a smooth, fine sugar texture is required. It dissolves instantly in liquids and fats.
Sift icing sugar before use to remove lumps, especially for buttercream or royal icing where smooth texture is critical. Store in a tightly sealed container as it readily absorbs moisture from the air and clumps.
Where Sugar, icing Stands Out
Macronutrients per 100g
Glycemic Index & Load
Medium GI food — moderate effect on blood sugar. Pair with protein, fat, or fibre to lower the overall meal GI.
Glycemic Load (GL = GI × carbs ÷ 100) accounts for portion size. A low GL means this food has minimal real-world blood sugar impact.
Vitamins & Minerals
| Nutrient | Per 100g | % Daily Value* | Level |
|---|---|---|---|
| Potassium | 11.0 mg | 1% | |
| Calcium | 2.00 mg | 0% | |
| Phosphorus | 1.00 mg | 0% | |
| Iron | 0.500 mg | 4% | |
| Zinc | 0.100 mg | 1% | |
| Copper | 0.050 mg | 5% | |
| Niacin (B3) | 0.000 mg | 0% | |
| Thiamin (B1) | 0.000 mg | 0% | |
| Vitamin D | 0.000 µg | 0% | |
| Vitamin A (RE) | 0.000 µg | 0% | |
| Manganese | 0.000 mg | 0% | |
| Folate | 0.000 µg | 0% | |
| Pantothenic Acid (B5) | 0.000 mg | 0% | |
| Riboflavin (B2) | 0.000 mg | 0% | |
| Vitamin E (alpha-TE) | 0.000 mg | 0% | |
| Vitamin C | 0.000 mg | 0% | |
| Selenium | 0.000 µg | 0% | |
| Niacin equivalents (NE) | 0.000 mg | 0% | |
| Vitamin B12 | 0.000 µg | 0% | |
| Magnesium | 0.000 mg | 0% | |
| Vitamin B6 | 0.000 mg | 0% | |
| Chloride | 0.000 mg | 0% | |
| Iodine | 0.000 µg | 0% | |
| Monounsaturated fat | 0.000 g | — | |
| Polyunsaturated fat (PUFA) | 0.000 g | — | |
| Sucrose | 100 g | — | |
| Glucose (dextrose) | 0.000 g | — | |
| Maltose | 0.000 g | — | |
| Fructose | 0.000 g | — | |
| Cholesterol | 0.000 mg | — | |
| Beta-carotene | 0.000 µg | — | |
| Biotin (Vitamin B7) | 0.000 µg | 0% | |
| Retinol (vitamin A) | 0.000 µg | 0% |
* % Daily Value is the proportion of an adult
EU Nutrient Reference Value (NRV) supplied by 100g of this food.
NRVs are the labelling standard — the same basis as the “%RI” figures printed on
food packaging — so these percentages are directly comparable with a shop label.
They are a single adult figure and do not vary by age or sex, which is why they
sometimes differ from UK dietary reference values: the NRV for vitamin C is 80mg
where the UK RNI is 40mg. When Nutriofia assesses your own intake in the
reports and trackers, it uses the age- and sex-specific UK values instead.
Fibre is shown without a percentage. Our fibre values use the UK
Englyst NSP method, while the published 30g daily goal is an AOAC figure — the two
are measured differently and a single percentage would mislead.
How we source and normalise our data →