Converters
Cooking Conversion Calculator
Convert cups, tablespoons, and teaspoons into grams and ounces for common baking and cooking ingredients.
Ingredient Weight Reference (per US cup)
| Ingredient | Grams | Ounces |
|---|---|---|
| All-purpose flour | 120 | 4.2 |
| Granulated sugar | 200 | 7.1 |
| Brown sugar (packed) | 220 | 7.8 |
| Butter | 227 | 8.0 |
| Powdered sugar | 120 | 4.2 |
| Rice (uncooked) | 185 | 6.5 |
| Water | 237 | 8.3 |
| Milk | 244 | 8.6 |
| Honey | 340 | 12.0 |
| Vegetable oil | 218 | 7.7 |
| Cocoa powder | 84 | 3.0 |
| Rolled oats | 90 | 3.2 |
Volume Reference
| Unit | Per Cup | Equivalence |
|---|---|---|
| Tablespoon | 16 tbsp | 3 tsp = 1 tbsp |
| Teaspoon | 48 tsp | 48 tsp = 1 cup |
| Fluid Ounce | 8 fl oz | 8 fl oz = 1 cup |
| Milliliter | 236.588 mL | 1 cup ≈ 236.6 mL |
Common Conversions
How it works
Why weight beats volume in the kitchen.
A cup of flour and a cup of water don't weigh the same thing, because volume only measures how much space an ingredient takes up — not how much of it is actually there. Flour is full of tiny air pockets that compress depending on how you handle it: a cup that's spooned lightly into the measuring cup and leveled off can weigh 20-30 grams less than a cup that's scooped directly from the bag and packed down. That's enough of a difference to throw off a cake's texture or a bread's rise, even though the recipe called for the same "1 cup" of flour both times.
Weight measurements in grams don't have this problem. A gram of flour is always the same amount of flour, no matter how it was scooped, sifted, or packed, which is why professional bakers and serious home cooks weigh their dry ingredients on a kitchen scale rather than relying on measuring cups. This calculator bridges the gap between the two systems: enter a volume measurement for a specific ingredient and it converts that amount into grams and ounces, using standard densities for ingredients like flour, sugar, butter, and honey, alongside the equivalent volume in tablespoons, teaspoons, fluid ounces, and milliliters — all in one place.
Related
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FAQ
Frequently asked questions.
How many grams are in a cup of flour?
One US cup of all-purpose flour weighs about 120 grams when spooned and leveled. This can vary by up to 20-30 grams depending on whether the flour is sifted, scooped and packed, or sifted first — which is exactly why bakers who care about consistency weigh flour instead of measuring it by volume.
How many grams are in a cup of sugar?
One US cup of granulated white sugar weighs about 200 grams. Brown sugar is denser when packed into a measuring cup, weighing about 220 grams per cup, while powdered (confectioners') sugar is lighter and airier at roughly 120 grams per cup.
Why do recipes measure ingredients by weight instead of volume?
Weight is far more precise than volume because dry ingredients like flour and sugar compress differently depending on how they're scooped, sifted, or packed. A cup of flour can weigh anywhere from 115 to 150 grams depending on technique, but a gram is always a gram — so weighing removes that variability entirely.
How many tablespoons are in a cup?
There are 16 tablespoons in one US cup. There are also 48 teaspoons in a cup, and 3 teaspoons in a tablespoon, which makes it easy to scale a recipe up or down using whichever measuring spoons you have on hand.
How much does a cup of butter weigh?
One US cup of butter weighs about 227 grams, which is also why butter is commonly sold in 4-ounce (113 g) or 8-ounce (227 g) sticks marked with tablespoon lines — making it one of the easiest ingredients to measure accurately without a scale.
Does 1 cup of water weigh the same as 1 cup of flour?
No. A cup of water weighs about 236.6 grams because water has a density of 1 gram per milliliter, while a cup of flour weighs only about 120 grams because flour is much lighter and contains trapped air. This is the core reason volume and weight aren't interchangeable across ingredients.
Is a US cup the same as a metric cup?
No. A US cup is 236.588 mL, while a metric cup (used in Australia and some other countries) is exactly 250 mL — about 5.6% larger. For baking precision, always check which cup size a recipe was written for, or better yet, use gram weights when they're provided.
Last updated: August 17, 2026