01
Length Converter
Converts between 15 length and distance units instantly, showing the exact conversion factor…
Cups to Grams — Icing / Powdered Sugar
Converts us cup of icing / powdered sugar to gram using its real density, not a generic volume factor. One us cup is 120 gram.
Converters
Nothing uploaded
No sign-up
Free, unlimited
Enter a value to convert.
In short
One us cup of icing / powdered sugar is 120 gram. Going the other way, one gram is 0.0083333333 us cup. That works out at 2 us cup = 240 gram and 4 = 480. The figure comes from icing / powdered sugar weighing 120 g per US cup — a generic cups-to-grams converter assumes water and will give you the wrong answer here, because volume to weight depends entirely on what is in the cup.
How to use the Cups to Grams — Icing / Powdered Sugar
- Type the value you want to convert.
- Pick the unit you are converting from and the unit you want.
- The converted value and the exact conversion factor are shown instantly.
About the Cups to Grams — Icing / Powdered Sugar
Icing sugar settles and clumps in the bag, so an unsifted cup can weigh 15–20 g more than a sifted one. For icings this matters: too much sugar by weight gives a stiff, grainy result that no amount of extra liquid quite fixes. Commercial icing sugar contains 2–3% cornflour as an anti-caking agent, which is why it thickens glazes slightly. The figure this page works from is 120 g per US cup, the spooned-and-levelled weight recorded by King Arthur Baking and the USDA food database. Converting us cup to gram for icing / powdered sugar, the amounts that come up most often are: 1/4 us cup = 30 gram; 1/3 us cup = 40 gram; 1/2 us cup = 60 gram; 2/3 us cup = 80 gram; 3/4 us cup = 90 gram; 1 us cup = 12 gram; 1 1/2 us cup = 18 gram; 2 us cup = 24 gram; 3 us cup = 36 gram.
What people use it for
- Following a US recipe with a kitchen scale instead of cup measures.
- Scaling a recipe up or down without compounding measuring error.
- Converting a European recipe written in grams into cups.
Details
| 1 US cup of icing / powdered sugar | 120 g |
|---|---|
| 1 US cup | 120 Gram |
| 1 Gram | 0.0083333333 US cup |
| Worth knowing | Commercial icing sugar contains 2–3% cornflour as an anti-caking agent, which is why it thickens glazes slightly. |
The maths behind it
This tool uses gram = us cup × 120, derived from icing / powdered sugar weighing 120 g per US cup. Every intermediate value is shown on screen, so the result can be checked by hand.
Icing sugar settles and clumps in the bag, so an unsifted cup can weigh 15–20 g more than a sifted one. For icings this matters: too much sugar by weight gives a stiff, grainy result that no amount of extra liquid quite fixes.
Where this tool stops
Volume-to-weight conversion is inherently approximate. Humidity, brand, how finely something is milled and how long it has sat in the cupboard all shift the figure by a few per cent.
Frequently asked questions
Should I sift before or after measuring?
Follow the recipe's word order. "1 cup sifted" means sift then measure; "1 cup icing sugar, sifted" means measure then sift. The two differ by around 15 g, which is enough to notice in a thin glaze.
Why does a cup of icing / powdered sugar not weigh the same as a cup of water?
Because a cup measures volume and a scale measures weight, and the two only agree for water. Icing / powdered sugar has its own density — 120 g per US cup — so any generic volume converter gives the wrong answer here.
How much does the way I fill the cup matter?
A fair amount, because icing sugar clumps in the bag and an unsifted cup can carry 15–20 g more than a sifted one. For a glaze that is the difference between pourable and stiff, and adding liquid to correct it never quite recovers the texture. Sift, then measure — or weigh and skip the argument.
Is a US cup the same as a UK or metric cup?
No. A US cup is 236.6 ml, a metric cup is 250 ml and an old UK cup is 284 ml. These pages use the US cup, because that is what US recipes mean.
Do I need an account to use the Cups to Grams — Icing / Powdered Sugar?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the tool.
Is what I paste into the Cups to Grams — Icing / Powdered Sugar stored?
No. The Cups to Grams — Icing / Powdered Sugar runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
Can I check the maths myself?
It uses gram = us cup × 120, derived from icing / powdered sugar weighing 120 g per US cup. The full working is printed under the result, so you can follow every step rather than trusting a black box.
Can you show an example?
Enter 2 us cup of icing / powdered sugar and the Cups to Grams — Icing / Powdered Sugar returns 240 gram.
What is the Cups to Grams — Icing / Powdered Sugar used for?
In practice it gets used for three things: following a US recipe with a kitchen scale instead of cup measures. Scaling a recipe up or down without compounding measuring error. Converting a European recipe written in grams into cups. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
When is the Cups to Grams — Icing / Powdered Sugar not the right tool?
Volume-to-weight conversion is inherently approximate. Humidity, brand, how finely something is milled and how long it has sat in the cupboard all shift the figure by a few per cent. Knowing where a tool stops being trustworthy matters more than the cases where it works.
Which values should I know?
1 US cup of icing / powdered sugar is 120 g. 1 US cup is 120 Gram. 1 Gram is 0.0083333333 US cup. These are printed on the page itself, so you do not have to take them on trust.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.
Related converters tools
All 107902
Weight Converter
Converts between 21 weight and mass units instantly, showing the exact conversion factor and a…
03
Area Converter
Converts between 25 area units instantly, showing the exact conversion factor and a full…
04
Volume Converter
Converts between 21 volume and capacity units instantly, showing the exact conversion factor…
05
Speed Converter
Converts between 7 speed and velocity units instantly, showing the exact conversion factor and…
06
Time Converter
Converts between 11 time units instantly, showing the exact conversion factor and a full…
07
Digital Storage Converter
Converts between 11 digital storage units instantly, showing the exact conversion factor and a…
08
Pressure Converter
Converts between 10 pressure units instantly, showing the exact conversion factor and a full…
09
Energy Converter
Converts between 11 energy and work units instantly, showing the exact conversion factor and a…
10
Power Converter
Converts between 7 power units instantly, showing the exact conversion factor and a full…