Cooking Measurement Converter

What this does

So a recipe throws a unit at you that you do not want to work in, and you need it in something familiar. This is the all in one converter for that. It moves between the common cooking measures: cups, grams, millilitres, ounces, pounds, quarts, tablespoons, and teaspoons. Pick what you are converting from, what you want it in, type the number, and it does the rest.

How to use it

1. Enter the value.
2. Choose the unit to convert from.
3. Choose the unit to convert to, then press Calculate.

It is built for speed, so there is no ingredient to pick, which is worth understanding before you lean on it. More on that below.

How the conversion works

Each pairing has a fixed factor, and the tool simply multiplies:

result = value × conversion factor

A few of these relationships are clean and exact: 1 tablespoon is 3 teaspoons, 1 quart is 4 cups, 1 pound is 16 ounces, and 1 ounce is about 28.35 grams. One thing to know about cups: this tool uses a 240 millilitre cup, so a cup works out to about 16.2 tablespoons or 48.7 teaspoons rather than a flat 16 and 48. That is not an error, just the 240 millilitre cup rather than the slightly smaller one behind the familiar round numbers. The tool works to several decimals, so expect precise figures rather than perfectly round ones.

The one thing to know

Here is the catch worth understanding. When you convert within the same family, volume to volume or weight to weight, the answer is solid. But when you cross between weight and volume, say grams to cups or ounces to tablespoons, this converter assumes the ingredient behaves like water, where 1 gram equals 1 millilitre.

That is exactly right for water and close enough for thin liquids like milk or juice. For dry ingredients, though, it will be off, because a cup of flour does not weigh the same as a cup of water. So for flour, sugar, and other dry goods, reach for the ingredient specific converters, like cups to grams, which ask you to choose the ingredient and use its real density. Use this tool for quick same family swaps and for water, and use those for everything where weight meets volume.

Questions people ask

References

1. U.S. Department of Agriculture, Food Buying Guide. Guide to Volume Equivalents for Liquids. https://foodbuyingguide.fns.usda.gov/Content/TablesFBG/Table12_FBG_A_Guide_to_Volume_Equivalents_for_Liquids.pdf
2. National Institute of Standards and Technology. Handbook 44, Appendix C: General Tables of Units of Measurement. https://www.nist.gov/document/nist-hb-44-2024-appendix-c-general-tables-units-measurement