Unit Conversion

Temperature Converter

Celsius, Fahrenheit and Kelvin — converted instantly with exact formulas.

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Conversion standard

Conversions follow international standard definitions. Results keep up to 10 significant digits; very large or very small values switch to scientific notation.

Quick conversion

Result

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Results follow international unit definitions — round them as needed for everyday use. For engineering or trade, apply the precision agreed in the contract.
UnitConverted value

The table below converts your input into every unit; the source unit row is highlighted.

How to use

Getting accurate temperature conversions

1

Celsius for everyday life

Water freezes at 0 °C and boils at 100 °C at sea level — the scale used almost everywhere in the world.

2

Fahrenheit in the US

°F = °C × 9/5 + 32. Water freezes at 32 °F and boils at 212 °F; room temperature sits around 68–72 °F.

3

Kelvin for science

K = °C + 273.15. Kelvin starts at absolute zero and is written without a degree sign.