What is Temperature Converter Online?
Celsius is the SI standard (water freezes at 0°C, boils at 100°C). Fahrenheit is used in the US (freezes at 32°F, boils at 212°F). Kelvin is the absolute thermodynamic scale used in physics (0 K = absolute zero = -273.15°C).
How to Use Temperature Converter Online
- Enter a temperature in any field.
- The other two scales update instantly.
Frequently Asked Questions
What is absolute zero?
0 Kelvin = -273.15°C = -459.67°F — the coldest possible temperature where all molecular motion stops.
Formula for Celsius to Fahrenheit?
°F = (°C × 9/5) + 32. Reverse: °C = (°F − 32) × 5/9.