All-Purpose Flour Cups to Grams Converter

One US cup of all-purpose flour weighs 125 grams. This is based on the US Customary cup (236.588 mL) and assumes proper measuring technique. Different cup sizes (Metric, Imperial) will yield slightly different weights—use our calculator above to select your specific cup size for accurate conversions.

For all-purpose flour, use the spoon-and-level method: spoon the flour into the measuring cup and level off with a straight edge. Never scoop directly with the cup or pack the flour, as this can add 20-30% more flour than intended, resulting in dry baked goods.

Different types of flour have different weights per cup and protein contents, which affect texture. While you can sometimes substitute, it's best to use the specific flour called for in the recipe. If substituting, adjust by weight (grams) rather than volume (cups) for better results.

Weighing all-purpose flour eliminates the variability of cup measurements. How you scoop, pack, or settle the all-purpose flour can change the amount by 20-30%. Professional bakers always weigh ingredients because 125 grams is always 125 grams, regardless of technique. A $20 digital scale will dramatically improve your baking consistency.

For all-purpose flour: 1/2 cup = 62.5g, 1/3 cup = 41.3g, and 1/4 cup = 31.3g. See the full conversion table above for more common measurements including 2/3 cup, 3/4 cup, and multi-cup amounts.

If a recipe says "1 cup all-purpose flour, sifted," measure first then sift. If it says "1 cup sifted all-purpose flour," sift first then measure. This matters because sifting adds air, so sifted flour weighs less per cup (about 100-110g vs 125g for all-purpose flour). For precision, weigh the flour instead of measuring by volume.