UrbiTools

grams to cups Converter

Convert grams to cups and back for real baking ingredients — flour, sugar, butter, milk, oil and rice — with one tap. Everything runs instantly in your browser; nothing is uploaded.

Convert grams ⇄ cups

Grams ≠ cups without the ingredient — a cup of flour weighs far less than a cup of sugar.
Presets
0.5 cups
100 g = 0.5 cups (at 200 g per US cup)

Formula: 100 g ÷ 200 g/cup = 0.5 cups

Approximate weights: ingredient weights per cup vary with packing, grind and brand — the presets are typical spooned-and-levelled values. For baking, weigh with a scale when it matters.

How the grams to cups conversion works

The converter applies cups = grams ÷ grams-per-cup. A US cup is 236.588 ml, so an ingredient's grams-per-cup is its density times 236.588 — water lands exactly on 236.588 g. Going the other way, grams = cups × grams-per-cup.

Worked example: a recipe calling for 250 g of all-purpose flour needs 250 ÷ 120 ≈ 2.08 cups. The same 250 g of granulated sugar is 250 ÷ 200 = 1.25 cups — same weight, noticeably less volume, because sugar packs denser than flour.

Treat every preset as typical, not exact: a scooped cup of flour can weigh 150 g while a spooned-and-levelled cup weighs 120 g. When a bake has to be right, weigh with a scale — and check the packet, which sometimes prints its own cup weight.

grams to cups questions

How do I convert grams to cups?
Divide grams by the ingredient's weight per US cup: cups = grams ÷ grams-per-cup. For example, 200 g of granulated sugar (200 g per cup) is exactly 1 cup. Pick a preset above or type your own weight.
How many grams are in a cup?
It depends on the ingredient. Water is 236.588 g (exact), butter about 227 g, granulated sugar 200 g, long-grain rice about 185 g, milk about 240 g, vegetable oil about 217.7 g, and all-purpose flour about 120 g.
Why can't I convert grams to cups directly?
Grams measure mass and cups measure volume — the bridge between them is the ingredient's weight per cup. A cup of flour (about 120 g) weighs far less than a cup of sugar (200 g). Any converter that skips the ingredient is silently assuming water.
How many cups is 100 g of flour?
About 0.83 cups (100 ÷ 120). With the flour preset selected above, type 100 to see it — the same 100 g of sugar would be exactly half a cup.
Can I convert cups back to grams?
Yes — switch the direction above. Grams = cups × grams-per-cup, so 2 cups of butter is 2 × 227 = 454 g.

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Sources & official guidance

Estimate only — ingredient weights vary by packing, grind, brand and temperature. See our disclaimer.