About this calculator

Convert between Celsius (°C), Fahrenheit (°F) and Kelvin (K). Celsius is the SI-derived everyday metric scale; Kelvin is the SI base unit (0 K = absolute zero); Fahrenheit is used mainly in the United States.

Frequently asked questions

What is 100°F in °C?

100°F = 37.78°C.

What is absolute zero?

0 K = −273.15°C = −459.67°F.

What does the Temperature Converter do?

Convert temperatures between Celsius, Fahrenheit and Kelvin instantly. Convert between Celsius (°C), Fahrenheit (°F) and Kelvin (K). Celsius is the SI-derived everyday metric scale; Kelvin is the SI base unit (0 K = absolute zero); Fahrenheit is used mainly in the United States.

Is the Temperature Converter free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Temperature Converter?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified unit converters professional before committing to a purchase or a job.

What inputs does the Temperature Converter need?

Enter values for: Value. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Temperature Converter on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.