📏 Unit conversion for kids
How many centimetres in an inch? How many millilitres in a cup? Pick what you are measuring, type a number, and get the answer in plain words.
Finding the ruler…
Every unit is a name for an amount, and two units can name the same amount. An inch and 2.54 centimetres are the same length. A cup and about 237 millilitres are the same amount of milk. Converting just means saying it in the other unit. The answers say "about" because they are rounded to a few figures.
The cups, tablespoons and teaspoons are the same ones used in the Kitchen. Nothing you type is saved or sent. For a project that uses measuring, see the science fair project picker.