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Temperature Converter
Celsius, Fahrenheit, Kelvin
Converted Temperature
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What is a Temperature Converter?
Instantly converts between Celsius, Fahrenheit, and Kelvin - the three major temperature scales used worldwide.
How It Works
F = (C x 9/5) + 32. C = (F - 32) x 5/9. K = C + 273.15. Covers the full range from absolute zero upward.
Example
Body temp 37C = 98.6F = 310.15 K. Water boils at 100C = 212F = 373.15 K. Room temp 22C = 71.6F = 295.15 K.
Pro Tips
- Quick mental conversion: F is approximately (C x 2) + 30, accurate within 5F for everyday temperatures.
- Celsius and Fahrenheit cross at exactly -40 degrees (-40C = -40F).
- Kelvin has no negative values - 0 K is the absolute minimum possible temperature.
- Scientists use Kelvin; doctors and weather use Celsius; US cooking uses Fahrenheit.
FAQ
Freezing and boiling of water?▼
Freezes: 0C / 32F / 273.15 K. Boils: 100C / 212F / 373.15 K at standard pressure.
Normal human body temperature?▼
37C / 98.6F average; healthy range 36.1-37.2C. Fever: above 38C / 100.4F.
What is absolute zero?▼
0 K = -273.15C = -459.67F. Theoretical minimum; no object can be colder.
Why does the US use Fahrenheit?▼
Historical convention; the US standardised on Fahrenheit before the metric system was adopted.