Temperature Converter

Temperature scales have different zero points as well as different interval sizes, so they require formulas rather than a single multiplier.

How temperature converter works

Celsius to Fahrenheit multiplies by 9/5 and adds 32. Celsius to Kelvin adds exactly 273.15.

Example formula: (°C × 9/5) + 32 = °F

Accurate, private conversion

The conversion engine uses standardized constants and keeps calculation precision separate from display formatting. Your entered values stay in this browser and are not added to the URL or sent to the server.

Frequently asked questions

What is absolute zero?

Absolute zero is 0 K, equal to −273.15°C or −459.67°F.

Does water always boil at 100°C?

No. 100°C is the boiling point at standard atmospheric pressure; altitude and pressure change it.