Powdered Sugar (Confectioners / Icing Sugar) Weight Reviewed September 19, 2026

150 Grams of Powdered Sugar to Cups

Direct Kitchen Answer

150 grams of Powdered Sugar (Confectioners / Icing Sugar) equals 1¼ cups, or exactly 20 tablespoons.

For reliable recipe results, that equals 20.0 tablespoons or 60.0 teaspoons in US Customary Cup standards.

Density Note: Calibrated for Spooned and leveled (unsifted) at a reference density of 120g per cup (0.507 g/mL).

Direct Answer

150 grams of Powdered Sugar (Confectioners / Icing Sugar) = 1 1/4 cups

Decimal value: 1.25 cups • Practical kitchen fraction: 1 1/4 cups

 Tablespoons 20.0 tbsp 
 Teaspoons 60.0 tsp 
 Grams per Cup 120g / cup 
 Bulk Density 0.507 g/mL 

Calibrated Measurement Condition: Spooned and leveled (unsifted)

Exact Formula

Calculation & Mathematical Derivation

To convert 150 grams of Powdered Sugar (Confectioners / Icing Sugar) into US Customary measuring cups (236.6 mL):

Cups = Weight in Grams ÷ Grams per Cup (Bulk Density)

Cups = 150g ÷ 120g/cup = 1.25 cups (kitchen fraction: 1 1/4 cups)

Tablespoons = 150g ÷ 7.50g/tbsp = 20.0 tablespoons

This calculation is calibrated specifically for Spooned and leveled (unsifted) under standard kitchen conditions (sourced from USDA FoodData Central (FDC ID 169656)).

Technique Note: Unsifted powdered sugar weighs ~120g/cup; sifted powdered sugar weighs ~100g/cup.

150g of Powdered Sugar Across Cup Standards

Because cup sizes vary internationally, here is how this weight converts across US Customary, US Legal, Metric, UK Imperial, and Japanese cups.

Ingredient	Weight	Cups (US Standard)	Tablespoons	Teaspoons
US Customary Cup (236.588 mL)	150g	1 1/4 (1.25 cups)	20.0 tbsp	60.0 tsp
US Legal Cup (Nutrition) (240 mL)	150g	1 1/4 (1.23 cups)	19.7 tbsp	59.1 tsp
Metric Cup (250 mL)	150g	1 1/6 (1.18 cups)	18.9 tbsp	56.8 tsp
UK Imperial Cup (284.131 mL)	150g	1.04 (1.04 cups)	16.7 tbsp	50.0 tsp
Japanese Cup (200 mL)	150g	1 1/2 (1.48 cups)	23.7 tbsp	71.0 tsp

Kitchen Measurement Converter

Live Calculation

Convert weight to volume accurately by accounting for density differences.

Select Ingredient 120g / cup

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Amount in Grams

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Cup Standard United States

Traditional US recipe cup defined as exactly 8 fluid ounces. Cup standards differ by region (US 236.6 mL, US Legal 240 mL, Metric 250 mL, UK 284.1 mL, Japanese 200 mL). US Customary is standard for American recipes.

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Custom Grams per Cup from your package label Leave blank to use the standard USDA density.

Calculated Result US Customary Cup (236.588 mL)

1 1/4 cups (1.25)

Kitchen measure: 1 cup + 4 tbsp (20.0 tbsp)

150 grams of Powdered Sugar (Confectioners / Icing Sugar) equals approximately 1 1/4 cups (US Customary Cup).

20.0 Tablespoons

60.0 Teaspoons

295.7 mL Volume (mL)

5.29 oz Ounces (Weight)

Culinary Technique

How to Measure 150g of Powdered Sugar (Confectioners / Icing Sugar) Accurately

Finely pulverized granulated sucrose (10X grind) blended with 3% cornstarch to prevent clumping during storage.

Pro Tip for Powdered Sugar:

If your recipe calls for "1 cup sifted powdered sugar", sift it into the cup (approx. 100g); if it says "1 cup powdered sugar, sifted", measure first (120g) and then sift.

Nearby Weights

Nearby Powdered Sugar Conversions

Need a slightly different quantity of Powdered Sugar (Confectioners / Icing Sugar)? Check these calibrated amounts:

120g Powdered Sugar → 125g Powdered Sugar → 130g Powdered Sugar → 140g Powdered Sugar → 160g Powdered Sugar → 165g Powdered Sugar → 170g Powdered Sugar → 175g Powdered Sugar →

Companion Tools

Helpful Tools for Powdered Sugar Recipes

Scale your recipe or convert companion units for this baking session:

Recipe Scaler & Multiplier Multiply or divide recipe portions for Powdered Sugar with automated fraction scaling → Powdered Sugar Conversion Hub Complete gram-by-gram conversion table, bulk density data, and kitchen measuring tips → Convert Cups to Grams Converting volume back into grams? Access the universal cups to grams calculator → All Amounts Directory Browse all 68 calibrated weight benchmarks and standard kitchen cup sizes →

Authority & Verification

Scientific Methodology for Powdered Sugar (Confectioners / Icing Sugar)

The conversion calculations for Powdered Sugar (Confectioners / Icing Sugar) are derived from peer-reviewed laboratory bulk density measurements cataloged in USDA FoodData Central (FDC ID 169656). Volume calculations assume a standard US Customary culinary cup of 236.588 mL (8 US fluid ounces). Because factors such as humidity, particle size distribution, and scooping compression alter volumetric yield, weighing on a calibrated digital scale remains the gold standard in professional baking.

Read Complete Density Methodology →

Frequently Asked Questions

How many cups is 150 grams of Powdered Sugar (Confectioners / Icing Sugar)?

150 grams of Powdered Sugar (Confectioners / Icing Sugar) equals 1 1/4 cups in standard US Customary measuring cups (1.25 cups), or 1 1/4 cups in US Legal.

How many tablespoons is 150g of Powdered Sugar (Confectioners / Icing Sugar)?

150g of Powdered Sugar (Confectioners / Icing Sugar) equals approximately 20.0 tablespoons (or 60.0 teaspoons).

What is the density and measurement condition of Powdered Sugar (Confectioners / Icing Sugar)?

Under standard conditions (Spooned and leveled (unsifted)), Powdered Sugar (Confectioners / Icing Sugar) weighs approximately 120 grams per US Customary cup (bulk density: 0.507 g/mL). Reference source: USDA FoodData Central (FDC ID 169656).

How do I measure 150g of Powdered Sugar (Confectioners / Icing Sugar) without a scale?

To measure 150g of Powdered Sugar (Confectioners / Icing Sugar) without a scale, use 1 1/4 cups (or approximately 20.0 tablespoons). Always ensure Powdered Sugar (Confectioners / Icing Sugar) is measured as: Spooned and leveled (unsifted).