Cups to Grams Converter
Convert US cups to grams (and grams back to cups) with ingredient-specific density — flour, sugar, butter, oils, and more. Built for bakers who want weight accuracy without a guessy 240 g flat rate.
1.000 cups of All-Purpose Flour ≈ 125 g per cup
What Is a Cups to Grams Converter?
A cups to grams converter turns US cup measurements into metric weight for a specific ingredient. Because flour, sugar, and liquids have different densities, one cup is almost never the same number of grams across the pantry. This tool uses grams-per-cup values so baking recipes translate more reliably.
How to Convert Cups to Grams
- Select the ingredient (e.g. all-purpose flour or granulated sugar).
- Enter cups (or switch to grams → cups mode).
- Read grams — then weigh on a kitchen scale for pro-level consistency.
Cups to Grams Formula
Reverse: Cups = Grams ÷ g per cup. US cup volume is fixed; weight changes with how dense the ingredient is when measured.
Quick Reference (Approx. Grams per US Cup)
- All-purpose flour ≈ 125 g
- Granulated sugar ≈ 200 g
- Brown sugar (packed) ≈ 220 g
- Butter ≈ 227 g
- Water / milk ≈ 237–244 g
Frequently Asked Questions
How many grams are in a cup of flour?
About 120–125 g for all-purpose flour (spooned and leveled). Bread and cake flours differ slightly.
How many grams are in a cup of sugar?
Granulated sugar ≈ 200 g; packed brown ≈ 220 g; powdered ≈ 120 g.
Is 1 cup always 240 grams?
No — 240 g is only a rough liquid/water guide. Dry ingredients vary widely by density.
How do I convert cups to grams accurately?
Use ingredient density (this converter) and ideally confirm with a digital scale.
Can I convert grams to cups?
Yes — toggle reverse mode and enter grams for the selected ingredient.
Is this cups to grams converter free?
Yes. Free, no account, private in your browser.