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Temperature converter

Convert between Celsius, Fahrenheit and kelvin. Type a value and read every scale at once.

All units

UnitValue
Celsius (°C)1
Fahrenheit (°F)33.8
Kelvin (K)274.15

Common questions

  • How do I convert Celsius to Fahrenheit?

    Multiply by 9/5 and add 32. Going the other way, subtract 32 then multiply by 5/9. Unlike weights, temperature scales have an offset as well as a ratio.

  • At what temperature do Celsius and Fahrenheit meet?

    At −40 degrees. It is the only point where the two scales read the same number, because their offsets and ratios cancel exactly there.

  • What is absolute zero?

    Absolute zero is 0 K, equal to −273.15 °C or −459.67 °F. It is the lowest temperature possible, so kelvin values are never negative.

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