Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly.
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Reference Points
Water freezes
0°C / 32°F
Room temperature
21°C / 70°F
Average body temperature
37°C / 99°F
Water boils
100°C / 212°F
How this temperature converter works
Every conversion routes through Celsius as a common reference point — Fahrenheit and Kelvin values are first converted to Celsius, then from Celsius to the target scale — which is why Celsius-to-Celsius is always an exact 1:1 pass-through.
Fahrenheit uses (°C × 9/5) + 32, while Kelvin is simply Celsius plus 273.15 — Kelvin has no negative values since 0 K represents absolute zero, the coldest physically possible temperature.
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