Temperature Converter
Last updated: June 1, 2026Celsius, Fahrenheit and Kelvin.
Temperature Converter is a free online calculator to celsius, Fahrenheit and Kelvin. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Temperature Converter
The Temperature Converter instantly converts between Celsius, Fahrenheit and Kelvin. Type a value, choose its unit, and see the other two at once. Free, accurate and runs entirely in your browser.
- 1Enter a temperature.
- 2Choose its unit (°C, °F or K).
- 3Read the converted values.
All three units
See Celsius, Fahrenheit and Kelvin together.
Instant
Results update as you type.
Free & private
Runs on your device with no sign-up.
Temperature Converter — frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example 100°C = 212°F. This tool does it instantly, both ways.
What is normal body temperature?
About 37°C, which is 98.6°F or 310.15 K.
Is it free?
Yes, completely free.
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