Temperature Converter

The United States is one of the few countries that still reports everyday temperature in degrees Fahrenheit. Celsius is used nearly everywhere else, and Kelvin is the SI base unit used in science. Unlike length or weight, temperature scales have different zero points, so you cannot convert them by multiplying alone.

Type a value to convert it instantly.

Temperature Conversions

Specific Temperature Readings

The oven settings, forecasts and thermometer readings people look up most, each worked out in both scales.

Temperature Units

Kelvin (K)

The kelvin is the SI base unit of temperature and starts at absolute zero, the point where thermal motion stops. A change of 1 kelvin is exactly the same size as a change of 1 degree Celsius, and kelvin is written without a degree sign.

Degree Celsius (°C)

The Celsius scale puts the freezing point of water at 0 degrees and its boiling point at 100 degrees at sea level. It is the everyday temperature scale in nearly every country except the United States.

Degree Fahrenheit (°F)

On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees, so one Fahrenheit degree is 5/9 the size of a Celsius degree. It remains the standard scale for weather, ovens and body temperature in the United States.

Every temperature value on this site is derived from the kelvin using exact definitions from The SI Brochure, BIPM. See how we calculate.

Last updated . Checked against the exact definitions on our how we calculate page.