Is an ounce the same as a fluid ounce?

No. An ounce measures weight and a fluid ounce measures volume. They match only for water and liquids like it: 1 fluid ounce of water weighs about 1 ounce. A cup of flour is 8 fluid ounces but weighs only about 4 1/2 ounces.

How many grams are in a cup of flour?

About 125 grams of all-purpose flour, spooned into the cup and leveled. A cup of granulated sugar is about 200 grams.

How many grams are in an ounce?

28.35 grams. For cooking, 28 grams is close enough, and a pound is about 454 grams.

Can I see a recipe in metric?

Yes. Every recipe page has a US and Metric switch next to the ingredients, along with servings that scale the amounts.

Kitchen Conversion Calculator

Convert ounces to grams, cups to milliliters, tablespoons and teaspoons, pounds to kilograms and oven temperatures between Fahrenheit and Celsius. For cups to grams, pick the ingredient: a cup of flour weighs much less than a cup of sugar.

Amount From To

Ingredient (for cups to grams)

Ounces to grams

Ounces	Grams
1 oz	28 g
2 oz	57 g
3 oz	85 g
4 oz	113 g
6 oz	170 g
8 oz	227 g
12 oz	340 g
16 oz	454 g

An ounce is about 28 grams, and a pound (16 ounces) is about 454 grams.

Cups and spoons to milliliters

US measure	Milliliters
1 teaspoon	5 ml
1 tablespoon (3 teaspoons)	15 ml
1/4 cup (4 tablespoons)	60 ml
1/3 cup	80 ml
1/2 cup	120 ml
1 cup (8 fluid ounces)	240 ml
1 pint (2 cups)	475 ml
1 quart (4 cups)	950 ml

One cup in grams

Ingredient	1 cup
Water, milk, broth	237 g
All-purpose flour	125 g
Granulated sugar	201 g
Brown sugar, packed	220 g
Powdered sugar	121 g
Butter	227 g
Oil	218 g
Honey, maple syrup	338 g
White rice, uncooked	185 g
Rolled oats	80 g
Cocoa powder	85 g
Salt, table	284 g

Oven temperatures

Fahrenheit	Celsius
250°F	120°C
275°F	135°C
300°F	150°C
325°F	165°C
350°F	175°C
375°F	190°C
400°F	205°C
425°F	220°C
450°F	230°C
475°F	245°C
500°F	260°C

Safe cooking temperatures for meat, poultry and seafood are in our cooking guide.

Frequently asked questions

Is an ounce the same as a fluid ounce?: No. An ounce measures weight and a fluid ounce measures volume. They match only for water and liquids like it: 1 fluid ounce of water weighs about 1 ounce. A cup of flour is 8 fluid ounces but weighs only about 4 1/2 ounces.
How many grams are in a cup of flour?: About 125 grams of all-purpose flour, spooned into the cup and leveled. A cup of granulated sugar is about 200 grams.
How many grams are in an ounce?: 28.35 grams. For cooking, 28 grams is close enough, and a pound is about 454 grams.
Can I see a recipe in metric?: Yes. Every recipe page has a US and Metric switch next to the ingredients, along with servings that scale the amounts.

More tools: Cooking time calculator | Kitchen conversions | Meal planner | What can I make? | Safe temperatures