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1 US Cup Bread Flour = 127g

1 US Cup of bread flour weighs 127 grams (4.48 ounces or 0.28 pounds; 236.6 mL or 16 tablespoons in volume) when measured spooned & leveled at a verified bulk density of 127g per 236.6 mL US Customary cup.

Imperial weight: 4.48 oz (0.28 lb) • Volume: 236.6 mL (16 tbsp)

Batch
Measuring density
Converted Measure
1 US cup Bread Flour (spooned & leveled) =
127 g
Physical scoop breakdown1.00 cup
1 cup
Edit either side to reverseBread Flour chart →
Grams
127 g
Ounces
4.48 oz
US Cups
1 cup
Metric (250mL)
0.95 c
Tablespoons
16 tbsp
Milliliters
236.6 mL

Kitchen note: Test-kitchen baseline uses spooned & leveled (127g/cup). Switching to scooped from bag (148g/cup) changes each cup by 21g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around 1 US Cup Bread Flour

Batch scaling conversion table around 1 US Cup of Bread Flour (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×) 63.5g (2.24 oz) ½ cup 118.3 mL
Standard (1×) 127g (4.48 oz) 1 cup 236.6 mL
1.5× Batch 190.5g (6.72 oz) 1 ½ cups 354.9 mL
Double Batch (2×) 254g (8.96 oz) 2 cups 473.2 mL
Triple Batch (3×) 381g (13.44 oz) 3 cups 709.8 mL

Measuring 1 US Cup of Bread Flour in the Kitchen

Measured spooned & leveled at a verified bulk density of 127g per US cup, 1 US cup of bread flour weighs 127 grams (4.48 ounces). Measured using the scooped from bag method (148g/cup), that same 1 cup holds 148g — a 21g difference in your mixing bowl.

Spoon into cup and level flat. Its 12-14% protein content yields dense granules that settle rapidly during storage.

Source note: King Arthur standard (127g/cup spooned) & USDA FDC #169742

Frequently Asked Questions

How many grams is 1 cup of bread flour? ▾

1 US Cup of bread flour measured spooned & leveled weighs 127 grams (4.48 ounces).

What makes bread flour heavier per cup than cake flour? ▾

Hard red wheat used in bread flour produces larger, denser starch granules and high gluten-forming proteins.

Can I substitute all-purpose flour for bread flour? ▾

Yes at 1:1 by weight, though your bread will have a slightly softer crumb and slightly less chew.