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Introduction to the online temperature converter

Convert freely between five temperature units online: Celsius (CELSIUS EQUALS), Fahrenheit (FAHENHEIT EQUALS), Kelvin (KELVIN EQUALS), Rankine (RANKINE EQUALS) and Reaumur (REAUMUR EQUALS).

K=5/9(°F+459.67) K = ℃+273.15

n°F= [(n-32)×5/9]℃ n℃= (9/5×n+32)°F 1℃= 9/5°F+32°F 1°F=5/9℃-32×5/9℃

F=9/5C+32,或C=5/9(F-32)

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How to use

This tool belongs to the “Calculators & converters” category.

  1. 1Type the value and check the unit the field is labelled with.
  2. 2Pick the target unit or formula; common equivalents are shown alongside.
  3. 3Round to the precision you need — results keep several significant decimals by default.

Your input is processed locally in the browser whenever possible. We do not store it.

Frequently asked questions

Any precision loss?

Decimal conversions of binary storage differ in the last digits. Use a proper maths package for engineering work.

Is data size 1000 or 1024?

Both conventions are shown; the difference is the KiB/KB and MB definitions.

Can I rely on the loan calculator?

It demonstrates the annuity formula only. Actual costs follow your bank or contract.