Grams to Cups
Powdered Sugar (Confectioners / Icing Sugar) Weight Reviewed

340 Grams of Powdered Sugar to Cups

Direct Kitchen Answer

340 grams of Powdered Sugar (Confectioners / Icing Sugar) is about 2⅞ cups, or approximately 45⅓ tablespoons.

For reliable recipe results, that equals 45.3 tablespoons or 136.0 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

340 grams of Powdered Sugar (Confectioners / Icing Sugar) = 2 7/8 cups

Decimal value: 2.83 cups • Practical kitchen fraction: 2 7/8 cups

Tablespoons 45.3 tbsp
Teaspoons 136.0 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 340 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 = 340g ÷ 120g/cup = 2.83 cups (kitchen fraction: 2 7/8 cups)
Tablespoons = 340g ÷ 7.50g/tbsp = 45.3 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.

340g 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) 340g 2 7/8 (2.83 cups) 45.3 tbsp 136.0 tsp
US Legal Cup (Nutrition) (240 mL) 340g 2 3/4 (2.79 cups) 44.7 tbsp 134.1 tsp
Metric Cup (250 mL) 340g 2 2/3 (2.68 cups) 42.9 tbsp 128.7 tsp
UK Imperial Cup (284.131 mL) 340g 2 3/8 (2.36 cups) 37.7 tbsp 113.2 tsp
Japanese Cup (200 mL) 340g 3 1/3 (3.35 cups) 53.6 tbsp 160.9 tsp

Kitchen Measurement Converter

Live Calculation

Convert weight to volume accurately by accounting for density differences.

Quick:
Condition: Spooned and leveled (unsifted) • Unsifted powdered sugar weighs ~120g/cup; sifted powdered sugar weighs ~100g/cup.
Quick:
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.
Use custom package value (optional)
Leave blank to use the standard USDA density.
Calculated Result US Customary Cup (236.588 mL)
2 7/8 cups (2.83)

Kitchen measure: 2 cups + 13 tbsp + 1 tsp (45.3 tbsp)

340 grams of Powdered Sugar (Confectioners / Icing Sugar) equals approximately 2 7/8 cups (US Customary Cup).

45.3 Tablespoons
136.0 Teaspoons
670.3 mL Volume (mL)
11.99 oz Ounces (Weight)
Culinary Technique

How to Measure 340g 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.

Explore Complete Powdered Sugar (Confectioners / Icing Sugar) Conversion Guide → Convert 340g Across All Ingredients →
Related in Sugars & Sweeteners

Convert 340g in Related Ingredients

Compare how 340 grams converts across other popular ingredients in the sugars & sweeteners family:

Granulated White Sugar 1 2/3 cups (1.70 cups • 27.2 tbsp) Brown Sugar (Light / Golden) 1.55 cups (1.55 cups • 24.7 tbsp) Dark Brown Sugar 1.55 cups (1.55 cups • 24.7 tbsp) Honey (Pure Liquid) 1 cups (1 cups • 16.0 tbsp) Pure Maple Syrup (Grade A) 1 1/8 cups (1.09 cups • 17.4 tbsp) Molasses (Dark / Unsulphured) 1.04 cups (1.04 cups • 16.6 tbsp) Corn Syrup (Light with Vanilla) 1.04 cups (1.04 cups • 16.6 tbsp) Agave Nectar (Light / Amber) 1.01 cups (1.01 cups • 16.2 tbsp)
Nearby Weights

Nearby Powdered Sugar Conversions

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

280g Powdered Sugar → 300g Powdered Sugar → 320g Powdered Sugar → 350g Powdered Sugar → 360g Powdered Sugar → 375g Powdered Sugar → 390g Powdered Sugar → 400g 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 340 grams of Powdered Sugar (Confectioners / Icing Sugar)?

340 grams of Powdered Sugar (Confectioners / Icing Sugar) equals 2 7/8 cups in standard US Customary measuring cups (2.83 cups), or 2 3/4 cups in US Legal.

How many tablespoons is 340g of Powdered Sugar (Confectioners / Icing Sugar)?

340g of Powdered Sugar (Confectioners / Icing Sugar) equals approximately 45.3 tablespoons (or 136.0 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 340g of Powdered Sugar (Confectioners / Icing Sugar) without a scale?

To measure 340g of Powdered Sugar (Confectioners / Icing Sugar) without a scale, use 2 7/8 cups (or approximately 45.3 tablespoons). Always ensure Powdered Sugar (Confectioners / Icing Sugar) is measured as: Spooned and leveled (unsifted).