How many grams are in a cup of all-purpose flour?

One cup of all-purpose flour, spooned and leveled, weighs about 125 grams. If you scoop the cup directly into the flour, it can weigh 140 to 150 grams. Always use the spoon-and-level method for consistency.

Is sifted flour lighter than unsifted flour?

Yes. Sifting adds air, so a cup of sifted all-purpose flour weighs about 115 grams, compared to 125 grams for unsifted. Pay attention to whether the recipe says '1 cup flour, sifted' (measure then sift) or '1 cup sifted flour' (sift then measure).

Why does my bread flour weigh more than all-purpose flour?

Bread flour has a higher protein content and slightly coarser grind, which makes it a bit denser. One cup of bread flour weighs about 127 grams, only 2 grams more than all-purpose. The difference is small, but it can matter in high-hydration doughs.

Can I convert cups to grams for any flour using the same number?

No. Different flours have different densities. For example, a cup of almond flour weighs about 96 grams, while a cup of gluten-free all-purpose blend weighs about 130 grams. Use the table in this article for the specific flour you are using.

Flour Cups to Grams: A Step-by-Step Guide for Every Flour Type

Why Cup Measurements Fail for Flour

Flour is light, powdery, and easily compressed. A cup of flour can weigh anywhere from 100 to 150 grams depending on how it is scooped, sifted, or settled. Recipes written in cups assume a consistent method, but home bakers rarely measure the same way twice.

This variability matters most in baking, where the ratio of flour to liquid determines structure. A 20-gram difference per cup can turn a tender cake into a dense brick or a chewy loaf into a crumbly one. Weighing flour in grams removes that guesswork entirely.

The step-by-step method below starts with the right tools, then walks through each flour type. By the end, you will know exactly how many grams are in a cup for the flour you are using, and how to measure it correctly every time.

Digital kitchen scale (1-gram increments)
Measuring cups (dry, not liquid)
Flour you intend to use
A spoon or scoop
A flat edge for leveling

A digital kitchen scale with a bowl of flour and a measuring cup nearby

Stage 1: Spoon and Level – The Standard Method

The most widely accepted way to measure flour is the spoon-and-level method. It produces the lightest, most consistent cup. Start by fluffing the flour in its bag or container with a fork or spoon to break up any packing from storage.

Spoon the flour into a dry measuring cup, heaping it above the rim. Do not scoop the cup directly into the bag – that compresses the flour and adds extra grams. Use a flat edge, like the back of a knife, to sweep off the excess level with the cup's top.

This method yields the standard weights used in most baking references. For all-purpose flour, one spooned and leveled cup weighs about 125 grams. If your recipe assumes a different weight, adjust accordingly.

Stage 2: The Flour-by-Flour Conversion Table

Different flours have different densities. Whole wheat flour is heavier because it retains the bran and germ; cake flour is finer and lighter. The table below gives the weight of one spooned and leveled cup for common types, plus the weight for half and quarter cups.

These figures are averages. Commercial brands can vary slightly, but these values match the conversion standards used by major baking publications and flour manufacturers. Always use the same method (spoon and level) for every cup you measure.

Flour type	1 cup (grams)	3/4 cup (grams)	1/2 cup (grams)	1/4 cup (grams)
All-purpose flour	125 g	94 g	63 g	31 g
Bread flour	127 g	95 g	64 g	32 g
Whole wheat flour	120 g	90 g	60 g	30 g
Cake flour	115 g	86 g	58 g	29 g
Pastry flour	110 g	83 g	55 g	28 g
Self-rising flour	125 g	94 g	63 g	31 g
Gluten-free all-purpose blend	130 g	98 g	65 g	33 g
Almond flour	96 g	72 g	48 g	24 g

Stage 3: Adjusting for Sifted Flour

Many recipes call for sifted flour, either before or after measuring. Sifting adds air, so a cup of sifted flour weighs less than a cup of unsifted flour. For all-purpose flour, sifted flour weighs about 115 grams per cup, compared to 125 grams unsifted.

If a recipe says '1 cup flour, sifted', measure the flour first, then sift it. If it says '1 cup sifted flour', sift first, then spoon the sifted flour into the cup without packing it. Following the recipe's wording matters because the weight changes.

When converting a recipe from cups to grams, note whether the original called for sifted flour. Using the wrong weight can throw off hydration, especially in delicate cakes and meringues.

Stage 4: When You Must Scoop (and How to Fix It)

Some recipes, especially those from older cookbooks, assume you scoop the cup directly into the flour. This packs in extra flour – a scooped cup of all-purpose flour can weigh 140 to 150 grams. If you are following such a recipe, the weight you need is higher than the standard 125 grams.

How do you know which method the recipe assumes? Look for clues: 'scoop and level' or 'dip and sweep' means the heavier cup; 'spoon and level' or 'lightly spooned' means the lighter cup. If the recipe gives no clue, use the spoon-and-level weight of 125 grams, since that is the modern default.

If you only have a scale and a recipe that calls for scooped cups, multiply the number of cups by 140 to 150 grams. For example, 2 scooped cups of all-purpose flour would be about 280 to 300 grams. This adjustment prevents a dry, stiff dough.

A person scooping flour with a measuring cup from a bag

Stage 5: Scaling Up or Down – Converting Recipes

Once you have the grams per cup for your flour type, converting a recipe is simple arithmetic. Multiply the number of cups by the gram weight from the table. For example, 3 cups of bread flour at 127 grams each equals 381 grams.

For fractions, use the column for 3/4, 1/2, or 1/4 cup, or multiply the full-cup weight by the fraction. Half a cup of cake flour is 115 × 0.5 = 57.5 grams, which you can round to 58 grams. Precision to the gram is rarely necessary; a 1-gram difference will not matter.

If you are doubling or halving a recipe, weigh each flour addition separately rather than measuring by volume. This is especially important with gluten-free blends, which often contain starches that settle differently. Weighing ensures the ratios stay correct.