RationCooking Unit Converter
Convert between cups, grams, ounces, tablespoons, and more. Select an ingredient for precise weight↔volume conversions — because a cup of flour is not the same weight as a cup of sugar.
Converting a whole Meal? Ration does this automatically as you add ingredients, and scales servings too.
Try Ration freeOven Temperature Converter
Convert between °C, fan oven, °F and gas mark using the standard oven chart. Fan ovens run about 20°C (25°F) lower than conventional.
| °C | Fan °C | °F | Gas mark |
|---|---|---|---|
| 110 | 90 | 225 | 1/4 |
| 120 | 100 | 250 | 1/2 |
| 140 | 120 | 275 | 1 |
| 150 | 130 | 300 | 2 |
| 170 | 150 | 325 | 3 |
| 180 | 160 | 350 | 4 |
| 190 | 170 | 375 | 5 |
| 200 | 180 | 400 | 6 |
| 220 | 200 | 425 | 7 |
| 230 | 210 | 450 | 8 |
| 240 | 220 | 475 | 9 |
Common Cooking Measurements
Quick-reference tables for standard cooking and baking conversions. Baking weights are derived from real ingredient densities — more accurate than rule-of-thumb charts.
Volume Conversions
US customary and metric volume equivalents used in cooking and baking.
| From | Equals (unit) | Value |
|---|---|---|
| 1 teaspoon (tsp) | milliliters | 4.93 ml |
| 1 tablespoon (tbsp) | milliliters | 14.79 ml |
| 1 tablespoon (tbsp) | teaspoons | 3 tsp |
| 1 fluid ounce (fl oz) | milliliters | 29.57 ml |
| 1 fluid ounce (fl oz) | tablespoons | 2 tbsp |
| 1 cup | milliliters | 236.59 ml |
| 1 cup | tablespoons | 16 tbsp |
| 1 cup | fluid ounces | 8 fl oz |
| 1 pint (pt) | cups | 2 cups |
| 1 pint (pt) | milliliters | 473.18 ml |
| 1 quart (qt) | pints | 2 pt |
| 1 quart (qt) | liters | 0.946 l |
| 1 gallon (gal) | quarts | 4 qt |
| 1 gallon (gal) | liters | 3.785 l |
| 1 liter (l) | milliliters | 1,000 ml |
| 1 liter (l) | cups | 4.227 cups |
Weight Conversions
Imperial and metric weight equivalents for grocery shopping and recipe scaling.
| From | Equals (unit) | Value |
|---|---|---|
| 1 ounce (oz) | grams | 28.35 g |
| 1 pound (lb) | ounces | 16 oz |
| 1 pound (lb) | grams | 453.59 g |
| 1 pound (lb) | kilograms | 0.4536 kg |
| 1 kilogram (kg) | grams | 1,000 g |
| 1 kilogram (kg) | pounds | 2.205 lb |
| 100 grams (g) | ounces | 3.527 oz |
| 500 grams (g) | pounds | 1.102 lb |
Baking Ingredient Weights
Weight in grams for common baking ingredients. Based on density data sourced from King Arthur Baking and USDA nutrition tables. "Spooned and leveled" method for flours; packed for brown sugar.
| Ingredient | 1 cup | 1 tbsp | 1 tsp |
|---|---|---|---|
| All-purpose flour | 125 g | 7.8 g | 2.6 g |
| Bread flour | 121 g | 7.5 g | 2.5 g |
| Cake flour | 121 g | 7.5 g | 2.5 g |
| Whole wheat flour | 118 g | 7.4 g | 2.5 g |
| Almond flour | 97 g | 6.1 g | 2 g |
| Coconut flour | 128 g | 8 g | 2.7 g |
| Cocoa powder | 83 g | 5.2 g | 1.7 g |
| Cornstarch | 111 g | 6.9 g | 2.3 g |
| Granulated sugar | 201 g | 12.6 g | 4.2 g |
| Caster sugar | 208 g | 13 g | 4.3 g |
| Powdered / icing sugar | 114 g | 7.1 g | 2.4 g |
| Brown sugar (packed) | 213 g | 13.3 g | 4.4 g |
| Coconut sugar | 201 g | 12.6 g | 4.2 g |
| Butter | 227 g | 14.2 g | 4.7 g |
| Honey | 341 g | 21.3 g | 7.1 g |
| Maple syrup | 322 g | 20.1 g | 6.7 g |
| Olive oil | 218 g | 13.6 g | 4.5 g |
| Rolled oats | 90 g | 5.6 g | 1.9 g |
| White rice (dry) | 201 g | 12.6 g | 4.2 g |
| Baking powder | 213 g | 13.3 g | 4.4 g |
| Baking soda | 206 g | 12.9 g | 4.3 g |
| Salt (table) | 284 g | 17.7 g | 5.9 g |
Why ingredient density matters
A cup is a volume measurement, not a weight. The number of grams in a cup depends entirely on what you are measuring. A cup of all-purpose flour weighs about 125 g when spooned and leveled, but a cup of granulated sugar weighs about 200 g — 60% more.
This is why professional bakers weigh ingredients rather than measure by volume. A kitchen scale removes the inconsistency of how tightly flour is packed into a measuring cup.
The conversions above use real density values (g/ml) for each ingredient. All-purpose flour is approximately 0.53 g/ml; granulated sugar is around 0.85 g/ml; honey is ~1.44 g/ml. The converter above uses these same values to calculate weight↔volume conversions in real time.
Frequently asked questions
How many grams are in a cup of flour?
About 125 g for all-purpose flour, spooned and leveled. Bread and cake flour come out around 120 g. Scooping straight from the bag can add 20 to 30 g, which is why weighing is more reliable.
How many grams are in a cup of sugar?
About 200 g for granulated sugar. Packed brown sugar is about 213 g, and powdered sugar is around 114 g.
What's the difference between oz and fl oz?
An ounce (oz) measures weight, while a fluid ounce (fl oz) measures volume. They only match for water and liquids with a similar density. For example, a fluid ounce of honey weighs about 1.5 oz, and a fluid ounce of flour weighs about 0.5 oz. A US fl oz is 29.6 ml and a UK fl oz is 28.4 ml.
How many ml are in a tablespoon?
A US tablespoon is 14.8 ml, which most recipes round to 15 ml. An Australian tablespoon is 20 ml. There are 3 teaspoons in a tablespoon.
Is a cup the same in the US, UK and Australia?
No. A US cup is 236.6 ml, while a metric cup (used in the UK, Australia, Canada and New Zealand) is 250 ml. Pints differ more: a US pint is 473 ml and a UK pint is 568 ml, about 20% larger.
How much is a stick of butter?
One US stick is ½ cup, which is 8 tablespoons or about 113 g. Four sticks make a pound.
How do I convert oven temperatures for a fan oven?
Lower the conventional temperature by about 20°C (25°F). For example, 180°C conventional is about 160°C fan. 180°C is also 350°F, or gas mark 4.
Why should I weigh baking ingredients instead of using cups?
Cups measure volume, and how much an ingredient weighs per cup depends on how tightly it's packed. Weighing gives you the same result every time, which matters most for flour in bread and cakes.
Stop converting by hand
Ration keeps your pantry, Meals and shopping list in one place, and it handles cups, grams and ingredient weights for you. It's free to start, on the web and on iPhone.
