Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin
About the Temperature Converter
The Temperature Converter converts between Celsius, Fahrenheit and Kelvin. It is useful for recipes, weather reports from other countries, science homework and lab work.
How it works
°F = °C × 9/5 + 32, and °C = (°F − 32) × 5/9. Kelvin is Celsius shifted by 273.15, so K = °C + 273.15. For example, 25 °C is 77 °F and 298.15 K.
How to Use Temperature Converter
Enter Your Data
Enter a temperature.
Run the Tool
Choose the scale it's in.
Use the Result
Press Convert to see it in the other two scales.
Why Use Our Temperature Converter?
100% Free
No registration, no hidden fees, no limits — ever.
Privacy First
All processing runs in your browser. Your data never leaves your device.
Mobile Friendly
Works perfectly on phones, tablets, and desktops.
Instant Results
Results appear as soon as you run the tool.
Frequently Asked Questions
Q. At what temperature are Celsius and Fahrenheit equal?
At −40. −40 °C is exactly −40 °F.
Q. What is normal body temperature?
About 37 °C, or 98.6 °F. Healthy readings vary by roughly half a degree Celsius during the day.
Q. Why isn't Kelvin written with a degree sign?
Kelvin is an absolute scale that starts at absolute zero (−273.15 °C), so its units are simply "kelvins", not degrees.