Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin.
About this tool
Convert between Celsius, Fahrenheit and Kelvin. Unlike most unit conversions, temperature scales don't share a common zero point, so this uses the correct offset formulas for each pair rather than a simple multiplier.
Key Features
- All 3 common temperature scales
- Validates against absolute zero
- Precise conversion formulas
How to Use
- Enter the temperature value.
- Choose the From and To scales.
- Click Convert.
Benefits
- Quick conversion for cooking, weather or science
- Avoids the common mistake of treating temperature as a simple ratio
- Flags physically impossible values below absolute zero
Frequently Asked Questions
Celsius, Fahrenheit and Kelvin have different zero points as well as different scale sizes \u2014 0\u00b0C is 32\u00b0F, not 0\u00b0F \u2014 so converting requires an offset (add/subtract) in addition to a scale factor, not multiplication alone.
Absolute zero (\u22120 K, \u2212273.15\u00b0C, \u2212459.67\u00b0F) is the coldest physically possible temperature. Entering anything colder is flagged as invalid rather than silently converted.