Celsius, Fahrenheit, and Kelvin without the mental math
Type a value on any scale and the other two update instantly — (°C × 9/5) + 32 for Fahrenheit, + 273.15 for Kelvin. It's built for the moments the formula slips your mind: adapting a European recipe to a US oven, reading a fever in the 'other' unit, or checking a lab value against absolute zero.
Reference points worth memorising
0°C / 32°F is freezing, 100°C / 212°F is boiling, 37°C / 98.6°F is body temperature, and −40° is the single point where both scales read the same. The converter validates against absolute zero (−273.15°C), so physically impossible inputs are caught instead of silently converted.
Features
- 01
- Celsius, Fahrenheit, Kelvin, and Rankine — all shown at once
- 02
- From/To selector with one-tap swap
- 03
- Click-to-copy on any scale
- 04
- Reference table of key temperature points
- 05
- Scientific-notation output for extreme values
