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350g Powdered / Confectioners' Sugar = 2 ¾ cups + 2 tbsp + 2 tsp

350 grams of powdered / confectioners' sugar equals 2 ¾ cups + 2 tbsp + 2 tsp (2.92 US Customary cups, 2.76 Metric 250 mL cups, 690 mL, 46.67 tablespoons, or 12.35 oz) when measured unsifted spooned at a verified density of 120g per US Customary cup.

Exact decimal volume: 2.92 US Customary Cups • 2.76 Metric Cups (250 mL) • 46.67 tbsp • 12.35 oz

Batch
Measuring density
Converted Measure
350 g Powdered / Confectioners' Sugar (unsifted spooned) =
2 ¾ US Cups + 2 tbsp + 2 tsp
Physical scoop breakdown2.92 cups
1 cup
1 cup
1/2 cup
1/4 cup
×2
2 tbsp
2 tsp
Edit either side to reversePowdered Sugar chart →
Grams
350 g
Ounces
12.35 oz
US Cups
2 ¾ cups + 2 tbsp + 2 tsp
Metric (250mL)
2.76 c
Tablespoons
46.67 tbsp
Milliliters
690 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 350g Powdered / Confectioners' Sugar

Batch scaling conversion table around 350g 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×) 175g (6.17 oz) 1 ⅓ cups + 2 tbsp 345 mL
Standard (1×) 350g (12.35 oz) 2 ¾ cups + 2 tbsp + 2 tsp 690 mL
1.5× Batch 525g (18.52 oz) 4 ⅓ cups + 2 tsp 1035.1 mL
Double Batch (2×) 700g (24.69 oz) 5 ¾ cups + 1 tbsp + 1 tsp 1380.1 mL
Triple Batch (3×) 1050g (37.04 oz) 8 ¾ cups 2070.1 mL

Measuring 350g of Powdered / Confectioners' Sugar in the Kitchen

Because 1 US Customary Cup (236.6 mL) of powdered / confectioners' sugar weighs 120g when measured unsifted spooned, 350 Grams (350g) translates to 2.92 US cups (2 ¾ cups + 2 tbsp + 2 tsp). By contrast, using the sifted measure (100g/cup — a 20g per-cup shift), 350g occupies 3 ½ cups (3.50 cups).

Without a kitchen scale, measure 2 ¾ cups + 2 tbsp + 2 tsp (46.67 tablespoons total) using unsifted spooned technique. 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 cups is 350 grams of powdered / confectioners' sugar? ▾

350 grams of powdered / confectioners' sugar (unsifted spooned, 120g per US cup) equals 2 ¾ cups + 2 tbsp + 2 tsp (2.92 US Customary Cups, 2.76 Metric 250 mL cups, or 46.67 tablespoons).

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.