Cups to Grams Converter
Converting cups to grams can be tricky because cups measure volume (space), while grams measure weight. Since 1 cup of flour weighs much less than 1 cup of butter, a simple 1:1 conversion doesn't work. Our free Cups to Grams Calculator automatically adjusts for ingredient density, giving you exact gram weight in seconds. Whether you are following an American recipe in Australia or baking a British dessert in the US, use this tool for flawless baking every single time. Going the other way instead? Use our Grams to Cups Converter.
Cups to Grams Calculator
Choose your ingredient and the amount in cups, and we'll convert it to grams and ounces for you.
Choose an ingredient and a cup amount, then hit convert to see the result in grams.
What Is a Cups to Grams Converter?
A Cups to Grams Converter is a practical kitchen tool designed to transform volume measurements (cups) into precise weight values (grams).
Because different dry and liquid ingredients have different densities, 1 cup of granulated sugar (approx. 200g) does not weigh the same as 1 cup of all-purpose flour (approx. 120g–125g). This tool uses specific ingredient density values to eliminate guesswork, helping home bakers and chefs get accurate, reliable measurements every time.
How Many Grams Are in a Cup?
The Cups to Grams Formula
This calculator uses a simple, standard formula to convert cups to grams:
The "grams per cup" figure comes from the ingredient's density multiplied by the volume of a standard US cup (236.59ml). Flour is light and airy, so it has a low density and a lower grams-per-cup figure. Honey and butter are much denser, so the same 1-cup volume weighs a lot more. For example, 3/4 cup of all-purpose flour converts to roughly 94g, while 3/4 cup of butter converts to roughly 170g — same volume, very different weight.
These figures are close approximations based on standard ingredient densities. Actual weight can vary slightly depending on brand, temperature, and whether the cup was spooned-and-levelled or scooped-and-packed.
Why Weighing Is More Accurate Than Using Cups
Scooping a cup directly into a bag of flour can pack in up to 15–20% more than gently spooning flour into the cup and levelling it off, which is why the same recipe can turn out differently depending on who's measuring. A kitchen scale removes that guesswork completely: once you know how many grams are in a cup for your ingredient, weighing it in grams gives the same result every single time, regardless of how tightly it's packed.
US Cups vs UK and Metric Cups
Cup sizes are not the same everywhere, which is worth knowing if you're following a recipe from a different country:
- US customary cup: 236.59ml — the standard used in most modern recipes and by this calculator.
- US legal cup (nutrition labels): 240ml, used on US food packaging.
- Metric cup (UK, Australia, New Zealand, Canada): 250ml — slightly larger than the US cup.
- Old UK imperial cup: 284.13ml, rarely seen in recipes published after the 1960s.
If your recipe uses a 250ml metric cup instead of the US cup, multiply the results from this calculator by roughly 1.06 to adjust. When in doubt, weighing in grams sidesteps the whole issue, since a gram is the same everywhere in the world.
Cups to Grams Chart: Common Baking Ingredients
Use this cups to grams chart for a quick reference without needing to run the calculator above.
| Ingredient | 1 Cup | ¾ Cup | ½ Cup | ⅓ Cup | ¼ Cup |
|---|---|---|---|---|---|
| All-Purpose Flour | 125 g | 94 g | 63 g | 42 g | 31 g |
| Bread Flour | 130 g | 98 g | 65 g | 43 g | 33 g |
| Cake Flour | 114 g | 86 g | 57 g | 38 g | 29 g |
| Granulated Sugar | 201 g | 151 g | 101 g | 67 g | 50 g |
| Brown Sugar (packed) | 195 g | 146 g | 98 g | 65 g | 49 g |
| Powdered Sugar | 121 g | 91 g | 61 g | 40 g | 30 g |
| Butter | 227 g | 170 g | 114 g | 76 g | 57 g |
| Margarine | 230 g | 173 g | 115 g | 77 g | 58 g |
| Milk | 245 g | 184 g | 123 g | 82 g | 61 g |
| Honey | 336 g | 252 g | 168 g | 112 g | 84 g |
| Vegetable Oil | 217 g | 163 g | 109 g | 72 g | 54 g |
| Breadcrumbs (dried) | 106 g | 80 g | 53 g | 35 g | 27 g |
| Oats | 102 g | 77 g | 51 g | 34 g | 26 g |
| Rice (uncooked) | 170 g | 128 g | 85 g | 57 g | 43 g |
| Sultanas / Raisins | 160 g | 120 g | 80 g | 53 g | 40 g |
| Almonds (whole) | 132 g | 99 g | 66 g | 44 g | 33 g |
| Water | 237 g | 178 g | 119 g | 79 g | 59 g |
Don't see the ingredient you need? Use the calculator above — it covers every cup amount, not just common fractions.
How Much Is 1 Cup of Flour in Grams?
One cup of all-purpose flour is about 125g (4.4oz). Bread flour is slightly heavier at around 130g per cup, while cake flour is lighter at around 114g per cup, since it's milled finer and packs less densely.
How Much Is 1 Cup of Sugar in Grams?
One cup of granulated sugar is about 200g (7oz). Brown sugar, when packed into the cup as most recipes intend, comes to around 195g, while powdered (icing) sugar is much lighter at around 121g per cup, since it's a finer, airier powder.
How Much Is 1 Cup of Butter in Grams?
One cup of butter is about 227g (8oz), which is also equal to two standard US butter sticks. Half a cup of butter (one stick) is around 114g.
Frequently Asked Questions (FAQs)
Disclaimer: The conversions and reference charts on this page are approximate, based on typical ingredient densities. Actual weight can vary depending on the brand, freshness, temperature, and measuring technique used. Whilst every effort has been made to ensure accuracy, we are not liable for any results, damages, or losses arising from the use of this calculator. Always use your judgement and, where precision matters, a kitchen scale.
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