Cooking Unit Converter
Convert cups to grams, ounces, and milliliters — accurate for any ingredient. 1 cup of flour is not the same as 1 cup of sugar.
116 ingredients with density-adjusted conversions.
Common cooking conversions
Recipes where measurement matters most
Frequently asked
Why does 1 cup weigh different amounts for different ingredients?
Because weight is mass and volume is space. A cup measures how much space an ingredient takes up, not how heavy it is. Flour is a light, airy powder — 1 cup weighs only 125 grams. Honey is a dense liquid — 1 cup weighs 340 grams, almost three times more. Always check a density table when converting between cups and grams.
Which is more accurate — cups or grams?
Grams are always more accurate. A kitchen scale eliminates the variables of how firmly you pack an ingredient, how much you scoop, or how your cup is shaped. Professional bakers use grams for this reason. For savory cooking the difference usually doesn't matter, but for baking (especially bread and pastry) grams can be the difference between success and failure.
How do I convert cups to grams for flour?
One cup of all-purpose flour is 125 grams using the spoon-and-level method (spoon flour into the cup, level with a knife). If you scoop the cup directly into the bag, you can pack in 150 grams or more — up to 20% extra. This is the most common source of dry, tough baked goods. When in doubt, weigh your flour.
How do I convert oven temperatures to Celsius?
Subtract 32 from the Fahrenheit number, then multiply by 5/9. For quick recipe use: 350°F ≈ 175°C, 375°F ≈ 190°C, 400°F ≈ 200°C, and 425°F ≈ 220°C. In the UK, Gas Mark 4 is 350°F (175°C), Gas Mark 6 is 400°F (200°C), and Gas Mark 7 is 425°F (220°C).
Is a US cup the same as a metric cup?
No. A US customary cup is 240 ml (the cooking standard; 236.6 ml exactly). A metric cup used in Australia, New Zealand, and Canada is 250 ml. A UK Imperial cup was 284 ml but is almost never used in modern recipes. US recipes assume a 240 ml cup, so if you're using an Australian cup set, you're adding about 4% extra of every ingredient.
Should I measure butter by volume or weight?
Weight, when you can. 1 cup of butter is 227 grams, or two US sticks. Each stick is 113 grams, 8 tablespoons, or 1/2 cup. US butter sticks have tablespoon markings printed on the wrapper — use those rather than pressing softened butter into a measuring cup, which always introduces air and throws off the weight.
How do I measure sticky ingredients like honey or peanut butter?
Lightly grease the measuring cup or spoon with a neutral oil (or cooking spray) before adding the sticky ingredient. It will slide out cleanly. Even better: zero a scale, place the mixing bowl on it, and pour the honey or peanut butter directly in until you hit the target weight (340 g per cup for honey, 258 g per cup for peanut butter). No sticky measuring cup to wash.