Length, weight, temperature, and volume, converted as you type.
Runs in your browser. Nothing is sent, saved, or shared.
Category
Inches
3.937
1 centimetres = 0.393701 inches
Results are rounded to a sensible number of places rather than the full floating point value. If the last digit matters, such as a dose or an engineering tolerance, use a tool built for that.
Length, weight, and volume all convert by multiplication, so doubling the input doubles the output. Temperature does not, because Celsius and Fahrenheit have different zero points as well as different step sizes.
This is why 0 degrees Celsius is 32 Fahrenheit rather than 0, and why you cannot convert a temperature difference the same way you convert a temperature. A rise of 10 Celsius is a rise of 18 Fahrenheit, not 50.
Conversions are shown to a sensible number of decimal places rather than the full float. One kilogram is 2.2046226218 pounds, and nobody needs that in a shopping context.
If you are converting something where the last digit matters, such as a medication dose or an engineering tolerance, use a tool built for that purpose. This one is built for everyday questions.
Length, weight, temperature, or volume.
From and to. Swapping them reverses the conversion.
The result updates immediately, with the conversion factor shown underneath.
The four percentage questions people actually search for, each with the working shown.
Enter height and weight. The number appears as you type, and nothing leaves your browser.
Total days, working days, and the same span expressed in weeks and months.
A calculator tells you where you are once. If the thing you actually want is to keep something up, that takes a record rather than a result.
