Cups to Grams Flour
Fixed all-purpose flour density: 120 g per US cup (King Arthur spooned/leveled).
Limitation: Educational kitchen conversion only.
How to Convert Flour Cups to Grams
Enter cups of all-purpose flour. The chart assumes spooned and leveled US cups—not scooped or sifted unless you adjust mentally.
Enter cups from your recipe.
Weigh when it matters
Volume-to-weight charts are averages. For finicky baking, weigh on a kitchen scale.
What 120 g per Cup Assumes
King Arthur lists 120 g for spooned, leveled all-purpose flour. Sifted flour is lighter (~113 g/cup sifted).
Worked Examples
1 cup flour
Inputs
Result
Baseline King Arthur reference.
2.5 cups flour
Inputs
Result
120 × 2.5 = 300 g.
Check your cup style
US customary cups differ from metric cups (250 mL). This cluster uses the US legal cup.
Frequently Asked Questions
Still have questions about this calculation?
Try the CalculatorFlour Conversion Formula
Single-ingredient shortcut of the general cups-to-grams engine.
Formula
Scientific Background
Assumptions follow published kitchen references cited in sources. Results are rounded for display.
Sources & review
Cups to Grams Flour documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.
Last reviewed
July 22, 2026
Reference
kingarthurbaking.com
https://www.kingarthurbaking.com/learn/ingredient-weight-chartFree Calculator Hub methodology
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