Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin with exact formulas. This calculator shows the precise conversion and displays the temperature in all three scales simultaneously.
Temperature conversion is essential in science, cooking, weather, and international travel. Unlike other unit conversions, temperature scales are not related by simple multiplication -- they involve offsets.
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
- Kelvin to Celsius: °C = K - 273.15
Key Reference Points
- Water freezes: 0°C = 32°F = 273.15K
- Water boils: 100°C = 212°F = 373.15K
- Absolute zero: -273.15°C = -459.67°F = 0K
- Body temperature: 37°C = 98.6°F = 310.15K
- The scales intersect at -40: -40°C = -40°F