Free & Instant
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly and accurately.
Temperature Converter
Enter a value and select units to convert.
Converted Value
0°C = 32°FAbout Temperature Conversion
Unlike other unit conversions, temperature conversion involves offsets, not just multiplication — Celsius, Fahrenheit, and Kelvin scales all start at different zero points, so the formulas are slightly more involved.
Temperature Conversion Formulas
| Convert | Formula |
|---|---|
| Celsius to Fahrenheit | (°C × 9/5) + 32 |
| Fahrenheit to Celsius | (°F − 32) × 5/9 |
| Celsius to Kelvin | °C + 273.15 |
| Kelvin to Celsius | K − 273.15 |
Frequently Asked Questions
Why isn't temperature a simple multiplication?+
Celsius, Fahrenheit, and Kelvin scales have different zero points (0°C ≠ 0°F ≠ 0K), so conversions require both multiplication and addition/subtraction, unlike length or weight.
What is absolute zero?+
Absolute zero is 0 Kelvin, equal to -273.15°C or -459.67°F — the theoretical point where all molecular motion stops.