This tool converts temperatures between Celsius, Fahrenheit and Kelvin at the same time — type a value into any unit and the others update instantly, all in your browser.
How to use it
- Type a temperature into any field (°C, °F or K).
- The other units update instantly.
- Copy whichever value you need.
About Temperature Converter
Three temperature scales remain in everyday use: Celsius across most of the world, Fahrenheit in the United States, and Kelvin in science. Converting between them means remembering different formulas and offsets, which is easy to get wrong under pressure. This converter keeps all three in sync from a single input, so whether you are reading a US recipe, a scientific paper or an international forecast, you can see the equivalent instantly. All conversion happens in your browser.
FAQ
What is the formula for Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example, 20°C × 9/5 + 32 = 68°F.
What is absolute zero?
It is 0 K, equal to −273.15°C or −459.67°F — the lowest possible temperature.
What are the freezing and boiling points in each scale?
Water freezes at 0°C / 32°F / 273.15K and boils at 100°C / 212°F / 373.15K at sea level. Celsius and Kelvin share the same step size, while Fahrenheit uses smaller degrees.