Temperature Converter (°C / °F)
Enter a temperature below to convert it instantly between Celsius, Fahrenheit and Kelvin.
Convert temperature
Your value in every scale
How to convert temperature
- Enter the temperature value you want to convert.
- Pick the scale you're converting from and the scale you want to convert to.
- Read the converted result instantly, or scroll down to see the value in all three scales at once.
Common temperature reference points
| Reference point | Celsius | Fahrenheit | Kelvin |
|---|---|---|---|
| Water freezes | 0°C | 32°F | 273.15 K |
| Room temperature | 20°C | 68°F | 293.15 K |
| Body temperature | 37°C | 98.6°F | 310.15 K |
| Water boils | 100°C | 212°F | 373.15 K |
| Absolute zero | -273.15°C | -459.67°F | 0 K |
FAQ
Is this temperature converter really free, with no sign-up?+
Yes. The tool runs entirely with JavaScript in your browser — there's no account, no API key, and no limit on how often you can use it.
What is the formula to convert Celsius to Fahrenheit?+
Fahrenheit equals Celsius multiplied by 9/5, plus 32. For example, 20°C converts to 68°F.
What is the formula to convert Fahrenheit to Celsius?+
Celsius equals Fahrenheit minus 32, multiplied by 5/9. For example, 68°F converts to 20°C.
What is Kelvin used for?+
Kelvin is the SI base unit of temperature, commonly used in science and engineering. It uses the same size degree as Celsius but starts at absolute zero, so 0°C equals 273.15 K.
What temperature is absolute zero?+
Absolute zero is 0 Kelvin, which equals -273.15°C and -459.67°F — the theoretical point at which all thermal motion stops.
Tools for Unit Conversion
How This Converter Works
Your value is converted live between Celsius, Fahrenheit and Kelvin with JavaScript using the standard conversion formulas — nothing you enter is uploaded to a server or stored anywhere.
Last updated: August 28, 2026.
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