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1 Tablespoon Powdered / Confectioners' Sugar = 7.5g

1 Tablespoon of powdered / confectioners' sugar weighs 7.5 grams (0.26 ounces or 0.02 pounds; 14.8 mL or 1 tablespoon in volume) when measured unsifted spooned at a verified bulk density of 120g per 236.6 mL US Customary cup.

Imperial weight: 0.26 oz (0.02 lb) • Volume: 14.8 mL (1 tbsp)

Batch
Measuring density
Converted Measure
1 tbsp Powdered / Confectioners' Sugar (unsifted spooned) =
7.5 g
Physical scoop breakdown0.06 cups
1 tbsp
Edit either side to reversePowdered Sugar chart →
Grams
7.5 g
Ounces
0.26 oz
US Cups
1 tbsp
Metric (250mL)
0.06 c
Tablespoons
1 tbsp
Milliliters
14.8 mL

Kitchen note: Test-kitchen baseline uses unsifted spooned (120g/cup). Switching to sifted (100g/cup) changes each cup by 20g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around 1 Tablespoon Powdered / Confectioners' Sugar

Batch scaling conversion table around 1 Tablespoon of Powdered / Confectioners' Sugar (0.5× to 3× recipe batches in grams, ounces, US cups, and milliliters)
Batch Scale Weight (g / oz) US Cups & Spoons Metric (mL)
Half Batch (0.5×) 3.8g (0.13 oz) 1 ½ tsp 7.4 mL
Standard (1×) 7.5g (0.26 oz) 1 tbsp 14.8 mL
1.5× Batch 11.3g (0.4 oz) 1 tbsp + 1 ½ tsp 22.2 mL
Double Batch (2×) 15g (0.53 oz) ⅛ cup 29.6 mL
Triple Batch (3×) 22.5g (0.79 oz) 3 tbsp 44.4 mL

Measuring 1 Tablespoon of Powdered / Confectioners' Sugar in the Kitchen

Measured unsifted spooned at a verified bulk density of 120g per US cup, 1 tablespoon of powdered / confectioners' sugar weighs 7.5 grams (0.26 ounces). Measured using the sifted method (100g/cup), that same 1 tbsp holds 6.3g — a 1.3g difference in your mixing bowl.

Spoon gently into the measuring cup and level flat. If your recipe calls for sifted powdered sugar, measure after sifting (100g/cup) or weigh directly.

Source note: USDA FoodData Central #169658 & Domino Confectioners 10-X specifications

Frequently Asked Questions

How many grams is 1 tbsp of powdered / confectioners' sugar? ▾

1 Tablespoon of powdered / confectioners' sugar measured unsifted spooned weighs 7.5 grams (0.26 ounces).

Why does powdered sugar contain cornstarch? ▾

Commercial confectioners sugar contains about 3% cornstarch as an anti-caking agent to prevent the microscopic particles from clumping.

Why do recipes specify sifted versus unsifted powdered sugar? ▾

Sifted powdered sugar traps significant air, dropping cup weight from 120g down to 100g—a 20% reduction in sweetness.