Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly.
Your conversions appear here
Enter a temperature and pick its scale. The other scales are calculated live as you type — right here in your browser, with nothing sent to a server.
Runs entirely in your browserConvert temperature scales, locally
This converter turns a single temperature into every other scale at once. Type a number, choose the scale it is in, and the other scales update as you type. Unlike length or weight, temperature scales do not share a simple multiply-by-factor relationship — they have different zero points — so the tool uses the exact formulas. Celsius converts to Fahrenheit with °F = °C × 9/5 + 32, and to Kelvin with K = °C + 273.15. Everything runs in your browser and nothing you type is uploaded anywhere.
Common questions
How do I convert Celsius to Fahrenheit?
Enter the temperature, select Celsius, and read the Fahrenheit row. The formula is °F = °C × 9/5 + 32, so 100 °C becomes 212 °F.
What is 0 Kelvin in Celsius?
0 Kelvin is absolute zero, which is −273.15 °C. Enter 0 and select Kelvin to see it in both Celsius and Fahrenheit at once.
Which scales does this temperature converter support?
Celsius (°C), Fahrenheit (°F) and Kelvin (K). Enter a value in any one and the other two are calculated instantly.
Can I enter negative temperatures?
Yes. Negative Celsius and Fahrenheit values are fine. Kelvin values below zero are physically meaningless but the tool will still compute them mathematically.
Are the values I type sent anywhere?
No. All conversions run entirely in your browser with JavaScript. Nothing you enter is uploaded or stored on a server.