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What it is
Temperature Converter turns Celsius, Fahrenheit and Kelvin into each other as you type. 37°C (body temperature) equals 98.6°F, and 0°C equals exactly 32°F: unlike the other 11 families in this converter, temperature doesn't convert with a simple multiplication factor — it needs an affine conversion (scale plus offset), the only family where this is true, and it's explained in the features section below instead of staying an implicit detail.
- Celsius, Fahrenheit and Kelvin converted live, with the exact formula applied consistently
- 37°C = 98.6°F, 0°C = 32°F: reference values ready without a calculator
- The only affine (non-linear-factor) family in the universal converter: explained, not left implicit
How it works
Pick the starting scale
Choose Celsius, Fahrenheit or Kelvin.
Type the value
Enter the number to convert: the result in the other scale appears instantly, including sub-zero temperatures.
Check the common table
Below the result you'll find reference values already converted (0°C, 20°C, 37°C, 100°C...) for a quick comparison.
Features
The only affine conversion in the tool
Celsius-Fahrenheit-Kelvin don't convert with a fixed factor like the other 11 families: they need a formula with scale and offset (e.g. °F = °C × 9/5 + 32). It's explained here, not just applied silently.
Validation below absolute zero
The tool flags any physically impossible value below absolute zero (-273.15°C / -459.67°F / 0 K).
Reference values ready to use
Body temperature, freezing and boiling points of water are already in the table, no need to memorize them.
Part of the universal converter
The same tool as the other 11 families: jump to length, mass, cooking and other conversions from the /unit-converter hub.
FAQ
Because the two scales don't share the same zero point: 0°C doesn't equal 0°F. The conversion needs both a scale factor (9/5) and an offset (+32), unlike length, mass or volume which only use a multiplication factor.
98.6°F.
At -40 degrees: -40°C equals exactly -40°F, the only point where the two scales cross.
It's the lowest temperature physically possible: 0 K, equal to -273.15°C and -459.67°F. The converter flags any value below this threshold in any of the three scales.
Just add 273.15: it's the only pair of scales in this converter that shares the same scale factor (no multiplication), only the offset changes.