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½ US Cup Light Brown Sugar = 100g

½ US Cup of light brown sugar weighs 100 grams (3.53 ounces or 0.22 pounds; 118.3 mL or 8 tablespoons in volume) when measured firmly packed at a verified bulk density of 200g per 236.6 mL US Customary cup.

Imperial weight: 3.53 oz (0.22 lb) • Volume: 118.3 mL (8 tbsp)

Batch
Measuring density
Converted Measure
0.5 US cup Light Brown Sugar (firmly packed) =
100 g
Physical scoop breakdown0.50 cups
1/2 cup
Edit either side to reverseLight Brown Sugar chart →
Grams
100 g
Ounces
3.53 oz
US Cups
½ cup
Metric (250mL)
0.47 c
Tablespoons
8 tbsp
Milliliters
118.3 mL

Kitchen note: Test-kitchen baseline uses firmly packed (200g/cup). Switching to loosely spooned (unpacked) (145g/cup) changes each cup by 55g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around ½ US Cup Light Brown Sugar

Batch scaling conversion table around ½ US Cup of Light Brown 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×) 50g (1.76 oz) ¼ cup 59.1 mL
Standard (1×) 100g (3.53 oz) ½ cup 118.3 mL
1.5× Batch 150g (5.29 oz) ¾ cup 177.4 mL
Double Batch (2×) 200g (7.05 oz) 1 cup 236.6 mL
Triple Batch (3×) 300g (10.58 oz) 1 ½ cups 354.9 mL

Measuring ½ US Cup of Light Brown Sugar in the Kitchen

Measured firmly packed at a verified bulk density of 200g per US cup, ½ US cup of light brown sugar weighs 100 grams (3.53 ounces). Measured using the loosely spooned (unpacked) method (145g/cup), that same ½ cup holds 72.5g — a 27.5g difference in your mixing bowl.

Press sugar firmly into the dry measuring cup with your fingers or a spoon until it holds the shape of the cup when inverted.

Source note: USDA FoodData Central #169656 & Domino Sugar standard packed weight

Frequently Asked Questions

How many grams is ½ cup of light brown sugar? ▾

½ US Cup of light brown sugar measured firmly packed weighs 100 grams (3.53 ounces).

Why must brown sugar always be firmly packed into the cup? ▾

Molasses film creates friction that traps irregular air pockets; packing eliminates voids to give consistent weight.

How can you soften rock-hard brown sugar quickly? ▾

Microwave in a bowl covered with a damp paper towel in 20-second bursts to restore humidity quickly.