Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin in real time.
Formulas:
°F = °C × 9/5 + 32°C = (°F - 32) × 5/9K = °C + 273.15
Convert between Celsius, Fahrenheit, and Kelvin in real time.
°F = °C × 9/5 + 32°C = (°F - 32) × 5/9K = °C + 273.15
Enter a value in any of the three temperature fields and the other two will update automatically. The converter handles Celsius, Fahrenheit, and Kelvin, the three most widely used temperature scales in science, cooking, weather, and everyday life. Results are calculated in real time with no button press required.
Celsius is the standard metric scale where water freezes at 0 degrees and boils at 100 degrees. Fahrenheit, used primarily in the United States, sets water's freezing point at 32 degrees and boiling at 212 degrees. Kelvin is the absolute temperature scale used in scientific research, starting at absolute zero (minus 273.15 degrees Celsius), the theoretical lowest possible temperature.
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32. To go from Fahrenheit to Celsius, subtract 32 and multiply by 5/9. Kelvin is simply Celsius plus 273.15. These formulas are shown below the converter for quick reference. The tool applies these calculations instantly so you never need to do the math manually.
Room temperature is about 20-22 degrees Celsius (68-72 degrees Fahrenheit). Body temperature is approximately 37 degrees Celsius (98.6 degrees Fahrenheit). Absolute zero is 0 Kelvin, which equals minus 273.15 Celsius or minus 459.67 Fahrenheit. These reference points help you verify that your conversions make sense and build intuition for different temperature scales.