Grams to Cups Converter
Metric recipe in hand, imperial measuring cups in the drawer.
When you find a recipe in grams but all your measuring tools are in cups, this converter bridges the gap. Enter the weight in grams, choose the ingredient, and see how many cups you need, accounting for the density of that specific ingredient. 100 grams of flour fills nearly a full cup (about 0.8 cups). 100 grams of honey fills just 0.29 cups. The difference is density, and this tool handles it precisely.
Most professional and European recipes measure in grams because weight is more accurate than volume, especially for baking. But if your kitchen only has cup measuring tools, converting back to cups is how you actually cook the recipe. We support 50+ ingredients with density values sourced from the FAO Database and King Arthur Baking.
Use the ingredient dropdown to find exactly what you are working with. Flour, sugar, butter, honey, oats, and more. For flour specifically, you can choose between the spooned method (what recipes typically assume) or scooped (if that is your habit). The output shows both a decimal value and the nearest simple fraction so you can match it to your measuring cup markings.
Result
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Pick a weight and ingredient above
Quick Conversions at a Glance
Common gram weights converted to US cups.
| Weight | Cups | Nearest fraction |
|---|---|---|
| 100 g flour (spooned) | 0.80 cup | about 3/4 cup |
| 100 g sugar | 0.50 cup | about 1/2 cup |
| 100 g butter | 0.44 cup | about 1/2 cup |
| 250 g flour | 2.00 cups | 2 cups |
| 500 g flour | 4.00 cups | 4 cups |
| 100 g water | 0.42 cup | about 1/3 cup |
| 100 g honey | 0.29 cup | about 1/4 cup |
| 100 g oats | 1.11 cups | about 1 cup |
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The Reference
Converting from grams to cups is mathematically the same as cups to grams, reversed. The density values we use are identical: FAO Density Database Version 2.0 and King Arthur Baking reference tables.
A gram-based recipe is typically more accurate than a cup-based one, so converting to cups may introduce small variations. Usually not enough to matter for home cooking, but worth knowing for precision baking.
When European Recipes Meet American Kitchens
European, Australian, and South American recipes almost exclusively use grams for dry ingredients. When you discover a fantastic French tart recipe, a German bread tutorial, or a Brazilian brigadeiro recipe, you often face a wall of grams: "200 g flour, 150 g sugar, 100 g butter." Without a scale or a grams-to-cups converter, the recipe becomes harder to follow than it needs to be.
Converting each ingredient from grams to cups gives you a usable recipe, with one caveat: the original author chose grams for precision. Converting back introduces small inaccuracies (typically 1-5%). For most recipes this is fine. For precision work (macarons, sourdough, choux pastry), we recommend investing in a digital kitchen scale. You can find one for 15-25 dollars, and it eliminates the conversion problem entirely.
If you are using our converter for a full recipe, consider our recipe scaler which handles entire ingredient lists. You can enter everything in grams and get a complete cup-based shopping list.
The Math of Kitchen Density
Why does 100 g of flour fill nearly a whole cup while 100 g of honey fills about a third of a cup? Because their densities are dramatically different. Flour is mostly air (around 0.52 g/mL in density). Honey is a concentrated sugar solution (around 1.42 g/mL). So a given weight of flour takes up almost three times the volume of the same weight of honey.
This is why ingredient selection matters so much in our converter. Using water's density (1.0 g/mL) for flour would give you about half the actual volume. Professional baking references like the FAO Density Database catalog these values for hundreds of ingredients, and our converter uses the most relevant subset.
For ingredients not in our list, a rough approximation: dry powders (flour-like) are around 0.5-0.7 g/mL; granulated ingredients (sugar-like) are 0.7-0.9; liquids are 0.9-1.0 (oils) or 1.0-1.4 (syrups). Use a similar-density ingredient from our list when your specific one is not available.
How to Use
- Enter the weight in grams.
- Select your ingredient from the dropdown.
- Get the volume in cups as a decimal and the nearest simple fraction.
Frequently Asked Questions
Why does 100 grams not always equal the same number of cups?
Because different ingredients have different densities. 100 g of flour is less dense than 100 g of honey, so it fills more space (more cups). The conversion depends entirely on the ingredient.
What is the most accurate way to measure from a gram-based recipe?
Use a kitchen scale if you have one. Measure out exactly the grams specified. If you must convert to cups, expect slight variations. For precision baking (macarons, choux pastry), we would recommend investing in a scale rather than converting.
How do I convert a whole recipe at once?
Convert each ingredient individually here, or use our Recipe Scaler which handles full recipes. Most home bakers only need to convert a few ingredients per recipe, so one at a time is usually sufficient.
Is the US cup the same as a regular cup?
In most English-language recipes, yes. US cup = 240 mL. If you are cooking from an Australian, New Zealand, or Canadian recipe, the metric cup is 250 mL. For most ingredients the difference is small enough not to matter, but for precise baking it can.
What if my ingredient is not in the list?
For ingredients with similar density, pick the closest match. For exotic ingredients, the Ingredient Density Database has a longer reference list. If still unlisted, weight is your safest bet. 100 g is 100 g regardless of what you are measuring.
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