How Many Grams
in a Cup?

There is no single answer — it depends on the ingredient. A US cup of all-purpose flour = 125g. A cup of granulated sugar = 200g. A cup of butter = 227g. A cup of honey = 340g. This is because grams measure weight while cups measure volume, and different ingredients have different densities. Use the calculator above — select your ingredient and get an instant, accurate result for any cup fraction.

Half a cup (½ cup) weighs different amounts for each ingredient. Key values: ½ cup all-purpose flour = 62.5g · ½ cup sugar = 100g · ½ cup butter = 113g · ½ cup milk = 122g · ½ cup rolled oats = 45g · ½ cup honey = 170g. Click the ½ fraction button in the calculator above, select your ingredient, and get the exact weight instantly.

A quarter cup (¼ cup) values: ¼ cup flour = 31g · ¼ cup sugar = 50g · ¼ cup butter = 57g · ¼ cup cocoa powder = 25g · ¼ cup milk = 61g · ¼ cup honey = 85g · ¼ cup rolled oats = 23g. Click the ¼ button in the calculator above for any ingredient.

100 grams in cups varies by ingredient: 100g flour ≈ 0.8 cups · 100g sugar = 0.5 cups · 100g butter ≈ 0.44 cups · 100g honey ≈ 0.29 cups · 100g oats ≈ 1.11 cups · 100g rice ≈ 0.51 cups. Switch to Grams → Cups mode in the calculator, enter 100, and select your ingredient for an exact result.

500 grams converted to cups: 500g flour ≈ 4 cups · 500g sugar = 2.5 cups · 500g butter ≈ 2.2 cups · 500g rice ≈ 2.56 cups · 500g oats ≈ 5.56 cups. In the calculator above, switch to Grams → Cups mode, type 500, and choose your ingredient for an accurate result.

US cup = 236.6ml — used in American recipes. Metric cup = 250ml — used in Australia, Canada, South Africa and many other countries. UK/Imperial cup = 284ml — the old British standard, rarely used in modern UK recipes (which now mostly use metric weight). This means if you're following an Australian recipe with a US measuring cup, you'll be using about 6% less of each ingredient — which can affect baking results significantly. Always select the right cup standard in the calculator above.

Flour weight per cup depends heavily on how you fill it. Scooping directly (dip and sweep): 140–155g. Spooning into the cup then levelling: 125g. Pre-sifted flour: 100g. That's a 55g range from the same 1-cup measure. Professional bakers and serious recipes always specify weight in grams for this reason — it removes all the variability. Our calculator uses the spooned-and-levelled standard (125g for all-purpose flour). If you scooped your flour, your actual amount may be 10–20% heavier than the calculator shows.