How to calculate temperature
°C = (°F − 32) × 5 ÷ 9
Worked example. In Celsius: 22.2 °C.
Example inputs — Temperature: 72; From: Fahrenheit. Starting values are illustrative.
From George Guju, founder of Calculyn · Educational calculator guidance, not professional advice.
How it works
Celsius and Fahrenheit use different zero points and step sizes. Kelvin starts at absolute zero.
Assumptions & limitations
- Results are rounded for display.
Formula and assumptions reviewed October 2026 by the Calculyn team. How we build our calculators
Frequently asked questions
When are °C and °F equal?
At −40°.