Temperature Converter
Enter a temperature, pick your From and To units, and get the converted value instantly.
Overview
Unlike most units, temperature scales don't share a common zero point, so converting between them needs an offset as well as a scale factor — you can't just multiply. This tool handles Celsius, Fahrenheit, and Kelvin with the correct formulas for each direction, and flags a result that would fall below absolute zero.
Examples
Celsius to Fahrenheit
100°C
212°F
Fahrenheit to Kelvin
98.6°F
310.15 K
How It Works
- Enter the temperature value.
- Choose the From unit and the To unit.
- The converted value appears instantly.
Use Cases
Weather and travel
Convert a forecast from Fahrenheit to Celsius (or the reverse) when reading weather from another country.
Science and cooking
Convert oven temperatures or lab measurements between Celsius, Fahrenheit, and Kelvin.
Tips
- Kelvin has no negative values — 0 K (absolute zero) is −273.15°C. The tool rejects inputs or results that would fall below that.
FAQ
No. Every conversion runs locally in your browser.
Every conversion goes through Celsius as an intermediate step: °C = (°F − 32) × 5/9 and K = °C + 273.15, then reversed for the target unit.