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Temperature Converter

Convert Celsius, Fahrenheit, Kelvin.

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From Freezing to Boiling

Temperature is a physical quantity that expresses hot and cold. While we all feel it, different parts of the world measure it differently.

A black and white cartoon of a thermometer with two sides, one showing Celsius and the other Fahrenheit, with the mercury rising.A black and white cartoon of a thermometer with two sides, one showing Celsius and the other Fahrenheit, with the mercury rising.

The Three Major Scales

Celsius (°C)

Used by most of the world. Defined by water freezing at 0°C and boiling at 100°C.

Fahrenheit (°F)

Used primarily in the United States. Water freezes at 32°F and boils at 212°F.

Kelvin (K)

The scientific standard. Starts at Absolute Zero (-273.15°C), where all thermal motion ceases.

Conversion Formulas

  • °F = (°C × 9/5) + 32
  • °C = (°F − 32) × 5/9
  • K = °C + 273.15
A black and white cartoon showing an ice cube melting on one side and a fire burning on the other, representing the extremes of temperature.A black and white cartoon showing an ice cube melting on one side and a fire burning on the other, representing the extremes of temperature.

Learn More

Read about the history and thermodynamics of Temperature.

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