Cups to Grams Flour Converter
Convert cups of flour to grams, or grams to cups, using a stated ingredient preparation and approximate portion weight with US or 250 mL metric cups.
Estimate the mass of all-purpose wheat flour from a measured cup quantity, or reverse the calculation from grams. The selected preparation matters: USDA’s reference portion is 125 g for an unsifted, spooned US cup and 115 g for a sifted, spooned cup. These are approximate household portion weights, not a property shared by every flour.
How to use this tool
- Choose cups to grams or grams to cups.
- Enter the quantity in that direction.
- Select unsifted or sifted, spooned all-purpose wheat flour.
- Select the cup system and inspect the displayed mass-per-cup assumption.
Formula
Grams = cups × reference grams per US cup × selected cup mL / 236.5882365; cups = grams / grams per selected cup
The reference household cup is treated as the US customary 236.5882365 mL measure. A metric cup is 250 mL; its estimated mass scales by the volume ratio while holding the assumed bulk density unchanged.
Example
For 2 US customary cups of unsifted, spooned all-purpose flour, the estimate is 2 × 125 = 250 g. The same two US cups using the sifted reference give 230 g. Choosing two metric cups increases each estimate because that cup holds 250 mL.
Frequently asked questions
Why do some recipes use 120 g or another weight per cup?
Recipe publishers may use another product or measuring procedure. Follow an explicit gram weight supplied by your recipe. This tool labels its USDA reference rather than presenting one cup weight as universal.
Can I use this for bread, almond or gluten-free flour?
Not without an appropriate reference for that product. The available models are all-purpose wheat flour only. Particle size, ingredients and packing can change its bulk density.
Does sifting after measuring change the gram amount?
The selected model describes the flour state when its volume is measured. Sifting an already-weighed amount does not remove mass; measuring a cup after sifting can hold a different mass.
How precise is the answer?
Additional displayed decimals describe calculation precision, not certainty in a scoop of flour. Use a scale when the recipe depends on an accurate mass, and do not use a drinking cup as a standard measuring cup.
Sources
Last updated: 2026-10-30