How Many Grams in a Cup of All-Purpose Flour? (125 g)
1 US legal cup of All-Purpose Flour = 125 grams (4.41 ounces). One tablespoon = 7.81 grams, and one teaspoon = 2.6 grams.
Portion baseline measured as 1 cup according to official USDA laboratory reference testing.
All-Purpose Flour: Fractional Cup to Grams Conversion Table
| Portion / Fraction | Grams (g) | Ounces (oz) | Equivalent Tablespoons |
|---|---|---|---|
| 1/8 cup | 15.6 g | 0.55 oz | 2 tbsp |
| 1/4 cup | 31.3 g | 1.1 oz | 4 tbsp |
| 1/3 cup | 41.7 g | 1.47 oz | 5.3 tbsp |
| 1/2 cup | 62.5 g | 2.21 oz | 8 tbsp |
| 2/3 cup | 83.3 g | 2.94 oz | 10.7 tbsp |
| 3/4 cup | 93.8 g | 3.31 oz | 12 tbsp |
| 1 cup | 125 g | 4.41 oz | 16 tbsp |
| 1 1/2 cups | 187.5 g | 6.62 oz | 24 tbsp |
| 2 cups | 250 g | 8.82 oz | 32 tbsp |
| 3 cups | 375 g | 13.23 oz | 48 tbsp |
| 4 cups | 500 g | 17.64 oz | 64 tbsp |
Interactive All-Purpose Flour Converter
Type any amount or choose a unit to calculate instant weights and volumes
Why the Weight of All-Purpose Flour Varies in Baking
All-Purpose Flour contains fine milled grain particles that settle and compact significantly during transit and storage. Ambient humidity also causes dry flour to absorb airborne moisture, increasing its weight without expanding volume. Spooning vs. direct cup scooping creates the largest real-world weight difference.
Flours & Grains Measuring Technique
Aerate flour with a spoon or whisk, spoon gently into the measuring cup without packing, and level with a straight edge.
Atmospheric Altitude Context
At 5280 ft elevation, lower atmospheric pressure accelerates moisture evaporation. Ensure All-Purpose Flour is measured strictly by weight (125g/cup) rather than volume scoop to prevent baking inconsistencies.
International Cup Size Weights for All-Purpose Flour
Standard cup volumes vary between countries. If following a UK, Australian, or Canadian recipe, use these computed gram equivalents for All-Purpose Flour:
| Standard Cup Standard | Volume (mL) | Calculated Grams (g) | Ounces (oz) | Primary Geographic Region |
|---|---|---|---|---|
| US Legal Cup (USDA Standard) | 240 mL | 125 g | 4.41 oz | United States (FDA nutrition labeling) |
| US Customary Cup | 236.6 mL | 123.2 g | 4.35 oz | United States (Standard kitchen measuring sets) |
| Metric Cup | 250 mL | 130.2 g | 4.59 oz | Australia, New Zealand, Canada, South Africa, UK |
| Imperial Cup | 284.1 mL | 148 g | 5.22 oz | Traditional British & Commonwealth recipes (1/2 pint) |
Related Flours & Grains Conversions
Frequently Asked Questions About All-Purpose Flour
Why does a cup of All-Purpose Flour weigh different amounts?
All-Purpose Flour settles and packs tightly in the bag during shipping. Scooping directly with a measuring cup compresses the particles, cramming up to 140–150 grams into the cup. In contrast, fluffing with a fork and spooning gently into the cup yields the standard benchmark of approximately 125 grams. Weighing with a digital kitchen scale eliminates this volume variation entirely.
Should I sift All-Purpose Flour before or after measuring?
Pay close attention to the recipe phrasing: "1 cup All-Purpose Flour, sifted" means measure 1 cup first, then sift it into your mixing bowl. "1 cup sifted All-Purpose Flour" means sift the flour into a mound first, then gently spoon 1 cup from that aerated mound. When measuring by weight on a gram scale, sifting timing has zero effect on the total flour mass.
How many grams of All-Purpose Flour are in one tablespoon?
One level US tablespoon of All-Purpose Flour weighs approximately 7.81 grams, and one level teaspoon weighs 2.6 grams. There are 16 tablespoons in 1 standard US cup (125g).
Can I swap All-Purpose Flour 1:1 by volume with all-purpose flour?
No. Different flours vary widely in protein content, fiber absorption, and bulk density. Substituting by volume (cups) alters batter hydration and gluten development. Always substitute alternative flours by weight in grams rather than volume, and monitor whether your dough requires additional liquid.
How does altitude affect measuring All-Purpose Flour?
At higher elevations (3,000+ ft), dry atmospheric pressure accelerates moisture evaporation from dry pantry goods, making All-Purpose Flour drier and prone to packing denser per scoop. Weighing strictly to 125 grams per cup prevents adding excessive dry solids to your batter.
Authoritative Laboratory Citation: USDA SR Legacy
USDA SR Legacy portion reflects standard dip-and-sweep method (125g). King Arthur charts recommend fluffing and spooning into the cup (120g). A digital kitchen scale is strongly recommended for flour.