How to convert temperature
- Type the temperature.
- Choose the scale you have and the one you want.
- Read the answer and the table of scales.
About this tool
Type a temperature and choose the scales. The answer shows at once, along with the same temperature in every scale. The page works through kelvin so each conversion is exact: Celsius to Fahrenheit multiplies by 9/5 and adds 32. A temperature below absolute zero is rejected because it cannot exist.
Common questions
What is the formula for Celsius to Fahrenheit?
F = C x 9/5 + 32. So 100 C is 212 F, and 37 C is 98.6 F.
At what temperature are Celsius and Fahrenheit equal?
At -40. It is -40 in both scales.
What is absolute zero?
The lowest possible temperature: 0 K, -273.15 C or -459.67 F. The converter refuses anything lower.
Is it free to use?
Yes. There's no sign-up, and you can use it as often as you like.
Is my text uploaded anywhere?
No. This tool runs inside your browser, so what you enter stays on your device.
Do I need to install anything?
No. It works in your browser on a computer or a phone.