Convert grams to cups — or cups to grams — for 20 common kitchen ingredients. Because grams measure weight and cups measure volume, the conversion depends on the ingredient's density. Pick your ingredient, enter the weight to get cups, or enter cups to get the weight. Leave the value you want to find blank.
The grams to cups converter solves one of the most common problems in the kitchen: a recipe lists an ingredient in grams, but your measuring set only has cups — or the other way around. Converting between the two is not as simple as a fixed number, because grams measure weight while cups measure volume. A cup of flour and a cup of honey occupy the same space but weigh very different amounts, so the conversion depends on the density of each ingredient. This tool has the densities of 20 popular ingredients built in, so you can convert accurately in a single click, in either direction.
Whether you are following an American recipe with cup measurements, a European one in grams, or simply prefer one system over the other, this converter bridges the gap. Enter the weight of an ingredient to see how many cups it fills, or enter the number of cups to find the weight — and switch between US customary, US legal, and metric cups as your recipe requires.
Grams and cups measure fundamentally different things. A gram is a unit of mass (weight), while a cup is a unit of volume (the space something takes up). To convert between weight and volume, you need to know how tightly packed the substance is — its density. Density is usually expressed in grams per milliliter (g/mL) or kilograms per cubic meter (kg/m³).
Consider the difference: one US cup of water weighs about 237 grams, but one cup of all-purpose flour weighs only about 142 grams, and one cup of honey weighs a hefty 335 grams. Same volume, wildly different weights — all because their densities differ. This is exactly why a universal "grams to cups" number does not exist, and why choosing the correct ingredient in the converter matters so much.
The conversion between weight and volume uses these two equations:
cups = weight ÷ (cup size × density)
weight = cups × cup size × density
Here the weight is in grams, the cup size is the volume of one cup in milliliters (236.59 mL for a US customary cup), and the density is in grams per milliliter. In practice, it is often easier to think in terms of "grams per cup" — the weight of a single cup of that ingredient — which is just the density multiplied by the cup size. Once you know how many grams are in one cup, converting is simple:
cups = weight in grams ÷ grams per cup
For example, since one cup of flour weighs about 141.6 grams, 250 grams of flour is 250 ÷ 141.6 ≈ 1.77 cups. The converter does this automatically for every ingredient in its list.
The table below shows the weight of one US customary cup (236.59 mL) for each of the ingredients in the converter. These are the values the tool uses, and they double as a handy quick reference:
These figures are approximate, since the density of an ingredient varies a little with temperature, humidity, and how tightly it is packed — but they are accurate enough for everyday cooking and baking.
Suppose a cake recipe calls for 250 grams of flour, but you only have a cup measure. Select "Flour," enter 250 in the weight field, and the converter divides by the grams-per-cup value for flour:
So 250 grams of flour is a little under 1¾ cups. These are the default values in the converter, so you can press Calculate to see the result, then swap in your own ingredient and amount. To go the other way, leave the weight blank and enter a number of cups instead — the tool will multiply by the grams-per-cup value to give you the weight.
Not all cups are the same size, and using the wrong one can throw your recipe off. The converter offers the three most common:
Because the metric cup is about 6% larger than the US customary cup, the same weight of an ingredient fills fewer metric cups than US cups. Always match the cup type to the origin of your recipe for the most accurate results.
Some conversions come up again and again in the kitchen. Here are a few handy ones for all-purpose flour, using the US customary cup:
And for granulated sugar:
Notice how 200 grams of sugar is almost exactly one cup, while 200 grams of flour is nearly 1.4 cups — a direct consequence of sugar being denser than flour. This is why the converter always asks which ingredient you are measuring.
Baking is often described as a science, and for good reason: the ratios of flour, sugar, fat, and liquid determine whether a cake rises, a cookie spreads, or a loaf turns out dense. Measuring by weight (grams) is far more precise than measuring by volume (cups), because a "cup of flour" can vary by 20% or more depending on whether the flour is scooped, spooned, or sifted, and how much it has settled. Professional bakers almost always weigh their ingredients for this reason.
That precision is exactly why converting accurately between grams and cups matters. When you convert 250 grams of flour to cups, you are relying on a standard density; if your flour is packed more tightly than average, your actual cup measurement may differ. For the best results, weigh ingredients when you can, and use this converter as a reliable guide when a recipe forces you to switch between systems.
All-purpose flour is the most commonly converted ingredient. One US cup weighs about 141.6 grams, so 500 grams — a typical bag portion for a large bake — is about 3.5 cups. Because flour compacts easily, spoon it into the cup and level it off rather than scooping, or better yet weigh it.
Granulated sugar is denser than flour, at about 199 grams per cup. Powdered (icing) sugar is much lighter and fluffier at roughly 132 grams per cup, so be sure to pick the right one in the converter — they are not interchangeable by volume.
Butter weighs about 215 grams per US cup. Since butter is usually sold in blocks marked with measurements, weighing is easy, but the converter helps when a recipe mixes systems — for instance, translating 100 grams of butter into just under half a cup.
For water, one cup weighs about 237 grams, which is where the rough "1 cup = 240 grams" rule of thumb for water comes from. Milk is slightly denser at 243 grams per cup, and oils are lighter than water at around 217 grams per cup. Honey and syrups are the heaviest common kitchen liquids, at over 300 grams per cup.
Cups are not the only volume measure in cooking. A US cup contains 16 tablespoons or 48 teaspoons, so once you know the grams-per-cup value you can scale down to smaller measures too. For example, one tablespoon of flour is about 141.6 ÷ 16 ≈ 8.9 grams, and one teaspoon of sugar is about 199.4 ÷ 48 ≈ 4.2 grams. If your recipe uses tablespoons or teaspoons rather than cups, you can convert to cups first and then multiply, or look for a dedicated grams-to-tablespoons tool. Keeping these relationships in mind makes it easy to adapt any recipe to whatever measuring equipment you have on hand.
It depends entirely on the ingredient. One US cup of water is about 237 grams, one cup of flour is about 142 grams, and one cup of sugar is about 199 grams. There is no single answer because grams measure weight and cups measure volume.
Divide by the grams-per-cup value for flour, which is about 141.6 g. So 250 ÷ 141.6 ≈ 1.77 US cups — just under one and three-quarter cups.
Only for some ingredients. 100 grams of sugar is close to half a cup, but 100 grams of flour is about 0.71 cups and 100 grams of water is about 0.42 cups. Always convert based on the specific ingredient.
American recipes traditionally measure by volume (cups), while European recipes usually measure by weight (grams). Weight is more precise, especially for baking, which is why converting accurately between the two is so useful.
Yes. A US customary cup is 236.59 mL, a US legal cup is 240 mL, and a metric cup is 250 mL. The larger the cup, the more grams it holds of the same ingredient, so choose the cup type that matches your recipe.
Select "Custom" and enter the ingredient's density in grams per milliliter. The converter will then calculate the grams-to-cups conversion using your value.
This Grams to Cups Converter is provided for general informational and cooking purposes. Ingredient densities are approximate and can vary with brand, temperature, humidity, and packing. For precision baking, weighing ingredients with a kitchen scale is recommended.