Temperature Converter: Celsius, Fahrenheit, Kelvin
Temperature conversion is essential for cooking, weather, science, and international communication. Our converter handles the three main scales—Celsius, Fahrenheit, and Kelvin—plus historical scales Rankine and Réaumur. The visual thermometer provides instant feedback on the temperature range.
For more conversions, see our Unit Converter.
Conversion Formulas
Celsius to Fahrenheit: °F = °C × 9/5 + 32. Fahrenheit to Celsius: °C = (°F - 32) × 5/9. Celsius to Kelvin: K = °C + 273.15. These formulas are displayed dynamically based on your selected input scale.
Reference Points
Key temperatures: Water freezes at 0°C/32°F, boils at 100°C/212°F. Normal body temperature is 37°C/98.6°F. Room temperature is typically 20-22°C/68-72°F. Absolute zero is -273.15°C/0K—the coldest possible temperature.