How many grams are in 1 cup of flour?

One US cup of all-purpose flour weighs approximately 125 grams when properly measured using the spoon-and-level method. However, this can vary by flour type: bread flour is about 130g per cup, while cake flour is about 115g per cup.

What's the difference between US cups and UK cups?

US cups (236.588 mL) are smaller than UK metric cups (250 mL) and significantly smaller than old UK imperial cups (284 mL). This 20% difference between US and Imperial cups can dramatically affect your baking results.

Why should I weigh ingredients instead of using cups?

Weighing ingredients is more accurate and consistent than volume measurements. How you scoop flour into a cup can result in 20-30% variation in the actual amount. Professional bakers always weigh ingredients because it ensures consistent results every time.

How do I convert tablespoons to grams?

Converting tablespoons to grams depends on the ingredient because different ingredients have different densities. For example, 1 tablespoon of flour weighs about 7.8g, while 1 tablespoon of sugar weighs about 12.5g.

Are Australian tablespoons different?

Yes! Australian tablespoons are 20 mL, while US and UK tablespoons are 15 mL. This means Australian recipes use fewer tablespoons per cup (12.5 vs 16).

How many grams are in 1 cup of flour?

One US cup of all-purpose flour weighs 125 grams when measured using the spoon-and-level method. Bread flour is slightly heavier at 130g per cup, while cake flour is lighter at 115g per cup.

How many grams are in 1 cup of sugar?

One US cup of granulated white sugar weighs 200 grams. Brown sugar (packed) is 220g per cup, and powdered sugar is only 120g per cup.

Why do different ingredients have different gram weights per cup?

Each ingredient has a unique density. Cups measure volume (the space something takes up), while grams measure mass (actual weight). Dense ingredients like sugar pack more mass into a cup than airy ingredients like flour.

Can I convert half a cup or 1/3 cup to grams?

Yes! For example, 1/2 cup flour = 62.5g, 1/3 cup flour = 41.7g, and 1/4 cup flour = 31.3g. The calculator handles any cup amount including fractions.

How many grams in 1/2 cup of powdered sugar?

Half a cup of powdered sugar weighs 60.0 grams. Similarly, 1/3 cup = 39.6g and 1/4 cup = 30.0g.

Powdered Sugar Cups to Grams Converter

Convert cups of powdered sugar to grams instantly. Accurate conversion: 1 cup = 120g. Free calculator for baking.

Powdered Sugar Cups to Grams

Convert cups of powdered sugar to grams with our free calculator. One cup of powdered sugar weighs approximately 120 grams.

💡 Also called confectioners sugar

Universal Baking Converter

Cup Size

Most common in US recipes - United States

From

Ingredient

💡 Also called confectioners sugar

Amount

Quick Presets:

Common Powdered Sugar Measurements

Cups	Grams	Ounces
1/4 cup	30.0g	1.06oz
1/3 cup	39.6g	1.40oz
1/2 cup	60.0g	2.12oz
2/3 cup	80.4g	2.84oz
3/4 cup	90.0g	3.17oz
1 cup	120.0g	4.23oz
1 1/2 cups	180.0g	6.35oz
2 cups	240.0g	8.47oz

* Based on US Customary cup (236.588 mL)

Tips for Measuring Powdered Sugar

Granulated Sugar: Can be scooped or spooned into the measuring cup. Level off the top for accuracy.

Brown Sugar: Should be firmly packed into the measuring cup unless the recipe specifies otherwise. It should hold its shape when turned out.

Powdered Sugar: Sift before measuring if it's lumpy. Spoon into the cup and level off—don't pack.

Best Practice: For the most accurate and consistent results, weigh yourpowdered sugar using a digital kitchen scale. Weight measurements eliminate the variability of volume measurements.

Cup Size Variations for Powdered Sugar

Cup Type	Volume	Weight
US Customary Cup	236.588 mL	120.0g
US Legal Cup	240 mL	121.7g
Metric Cup	250 mL	126.8g
Imperial Cup	284.131 mL	144.1g
Australian Cup	250 mL	126.8g

The weight of 1 cup of powdered sugar varies depending on which cup size you use. Most American recipes use the US Customary cup (236.588 mL).

Frequently Asked Questions About Powdered Sugar

How many grams in 1 cup of powdered sugar?

One US cup of powdered sugar weighs 120 grams. This is based on the US Customary cup (236.588 mL) and assumes proper measuring technique. Different cup sizes (Metric, Imperial) will yield slightly different weights—use our calculator above to select your specific cup size for accurate conversions.

How do I accurately measure powdered sugar in cups?

For powdered sugar, you can scoop or spoon into the measuring cup, then level off the top with a straight edge. Ensure there are no air pockets.

Can I substitute powdered sugar with a similar ingredient?

Different sugars have different sweetness levels, moisture content, and weights per cup. Granulated sugar (200g/cup) is very different from powdered sugar (120g/cup) or brown sugar (220g/cup). Substitutions require recipe adjustments beyond just weight conversions.

Why is weighing powdered sugar better than measuring by cups?

Weighing powdered sugar eliminates the variability of cup measurements. How you scoop, pack, or settle the powdered sugar can change the amount by 20-30%. Professional bakers always weigh ingredients because 120 grams is always 120 grams, regardless of technique. A $20 digital scale will dramatically improve your baking consistency.

How many grams in 1/2 cup, 1/3 cup, and 1/4 cup of powdered sugar?

For powdered sugar: 1/2 cup = 60.0g, 1/3 cup = 39.6g, and 1/4 cup = 30.0g. See the full conversion table above for more common measurements including 2/3 cup, 3/4 cup, and multi-cup amounts.

Related Sugar Conversions

Granulated Sugar

1 cup = 200g

Brown Sugar (Packed)

1 cup = 220g

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