A converter that actually works: Cups to Grams

February 25, 2025 · by the ToolsForUse team

What prompted this

I was trying to bake a simple loaf of banana bread last month — the kind my grandmother used to make, from a hand-written card with "1 cup of sugar, 2 cups of flour, 1/2 cup of butter." Everything was in cups. Fine, I thought, I'll just convert it to grams like my kitchen scale prefers. But then I realized: a cup of flour isn't the same weight as a cup of sugar. And neither is the same as a cup of butter. I ended up Googling three different conversions, getting inconsistent numbers, and still second-guessing myself. The bread turned out okay, but the process was dumb and frustrating.

Why existing options fall short

Most conversion tables or calculators you find online are either buried in blog posts with 20 paragraphs of ads, or they're too vague — "1 cup of flour = 125g to 150g." That's a huge range! Other tools ask you to pick a generic "ingredient type" but don't have common baking items like brown sugar or cocoa powder. And almost none of them account for the difference between sifted and unsifted flour, or packed vs. unpacked brown sugar. It feels like they were built by people who don't actually bake.

I wanted something clean, specific, and honest about the numbers it uses. No fluff, no affiliate links for measuring cups. Just a straight conversion that I could trust.

What the tool actually does

The Cups to Grams Converter takes a volume in cups and an ingredient (like all-purpose flour, granulated sugar, butter, brown sugar, cocoa powder, or milk), and gives you the weight in grams. It uses standard conversion weights that bakers actually use — for example, 1 cup of all-purpose flour = 125 grams, 1 cup of granulated sugar = 200 grams, 1 cup of butter = 227 grams. You can also specify if the flour is sifted or if the brown sugar is packed, because that actually matters.

It's intentionally simple: no sign-up, no request for your email, no tracking. You put in the numbers, you get the conversion. That's the whole thing.

Try the Cups to Grams Converter →


If you bake even semi-regularly, having a reliable way to convert cups to grams saves you from the awkward "let me check three different websites" dance. I built this because I needed it, and maybe you do too. No hype, no urgency — just a tool that works. Hope it helps.