Sugars & Syrups
Convert teaspoons of powdered sugar to grams
One teaspoon of powdered sugar weighs about 2.5 g, and half a teaspoon comes to roughly 1.25 g. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 tsp of powdered sugar =
2.5 g
- oz
- 0.088
- kg
- 0.0025
- lb
- 0.0055
Powdered Sugar: 120 g per US cup · FAO / INFOODS density database. Unsifted powdered sugar traps lumps and air. Sifted it measures around 112 g per cup.
Full powdered sugar chart →Powdered Sugar at a glance
Every number on this page comes from a single figure: 120 grams per US cup (FAO / INFOODS density database).
- 1 cup
- 120 g
- 1 tablespoon
- 7.5 g
- 1 teaspoon
- 2.5 g
- 1 cup in ounces
- 4.23 oz
- 100 g in cups
- 0.833 cups
- Density
- 0.51 g/ml
teaspoons to grams chart for powdered sugar
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Teaspoons (US) | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 1/4 tsp | 0.625 g | 0.022 oz | 0.0014 lb |
| 1/2 tsp | 1.25 g | 0.044 oz | 0.0028 lb |
| 3/4 tsp | 1.88 g | 0.066 oz | 0.0041 lb |
| 1 tsp | 2.5 g | 0.088 oz | 0.0055 lb |
| 1 1/2 tsp | 3.75 g | 0.132 oz | 0.0083 lb |
| 2 tsp | 5 g | 0.176 oz | 0.011 lb |
| 3 tsp | 7.5 g | 0.265 oz | 0.017 lb |
| 4 tsp | 10 g | 0.353 oz | 0.022 lb |
| 6 tsp | 15 g | 0.529 oz | 0.033 lb |
| 8 tsp | 20 g | 0.705 oz | 0.044 lb |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat powdered sugar as 120 g per US customary cup, which works out to 0.507 g/ml. From there:
- Your teaspoons figure is converted into millilitres or grams using standard unit sizes (tsp = 4.93 ml).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 7/8 cups.
Measuring powdered sugar accurately
Unsifted powdered sugar traps lumps and air. Sifted it measures around 112 g per cup.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many grams are in 1 teaspoon of powdered sugar?
1 teaspoon of powdered sugar is 2.5 g. This is based on a density of 120 g per US cup.
How many grams are in 2 teaspoons of powdered sugar?
2 teaspoons of powdered sugar is 5 g, and 1.25 g for half a teaspoon.
How much is 100 g of powdered sugar in cups?
100 g of powdered sugar is about 7/8 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for powdered sugar?
Unsifted powdered sugar traps lumps and air. Sifted it measures around 112 g per cup.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.