Written by Mustapha B. · Updated August 13, 2026
Turn a gram weight from a recipe into cups. Select your ingredient so the conversion uses the correct density, 125 g of flour is 1 cup, but 125 g of sugar is closer to ⅔ cup.
Converting grams to cups is one of those everyday kitchen puzzles where the answer depends entirely on what you're measuring. Grams measure weight, while a cup measures volume, so a cup of feathery flour and a cup of dense sugar weigh very different amounts. As a quick rule of thumb, 1 cup of all-purpose flour is roughly 125g, 1 cup of granulated sugar is about 200g, and 1 cup of water sits at 240g. Always match the ingredient to get an accurate figure.
Reach for this converter whenever a recipe lists grams but your measuring set only has cups, which happens constantly when you're following a European or Australian recipe in a US kitchen. Type the gram amount, pick your ingredient, and you'll get the cup equivalent instantly. One handy tip: for baking, weighing in grams on a kitchen scale is far more reliable than scooping cups, so if you own a scale, use the grams figure directly for the most consistent results.
The reason a single “cup to grams” number never works is that a cup measures volume while grams measure weight. A cup of feathery flour holds far less mass than a cup of dense honey, so the only accurate way to convert between volume and weight is to use each ingredient’s density. This converter stores tested densities for dozens of common cooking and baking ingredients, so you get the right number every time.
Volume-to-volume (cups → tablespoons) and weight-to-weight (ounces → grams) conversions are fixed ratios and don’t depend on the ingredient. You only need to pick an ingredient when you cross between the two, for example cups to grams, or ounces to cups.
| Ingredient | 1 cup | ½ cup | ⅓ cup |
|---|---|---|---|
| Flour, all-purpose | 125 g | 63 g | 42 g |
| Flour, bread | 127 g | 64 g | 42 g |
| Sugar, granulated | 200 g | 100 g | 67 g |
| Sugar, brown (packed) | 220 g | 110 g | 73 g |
| Sugar, powdered | 120 g | 60 g | 40 g |
| Butter | 227 g | 114 g | 76 g |
| Cocoa powder | 85 g | 43 g | 28 g |
| Honey | 340 g | 170 g | 113 g |
| Water | 237 g | 119 g | 79 g |
Weights are spooned-and-levelled and based on commonly referenced King Arthur Baking and USDA densities. For the most reliable baking, weigh ingredients with a digital scale.
No. 100 grams equals roughly half a cup of water, about 0.8 cup of granulated sugar, or 0.8 cup of flour. The cup amount changes with the ingredient because grams measure weight and cups measure volume.
Because a cup is a fixed volume but different ingredients have different densities. The same cup holds about 125g of flour but 200g of sugar, so you must convert per ingredient rather than using one universal number.