C

18 °F to °C

-7.78 °C

18 degrees Fahrenheit equals -7.7778 degrees Celsius.

How the conversion works

This one is a formula rather than a single multiplier:

°C = (°F − 32) × 5/9 → -7.7778 °C

Going the other way: convert -7.78 °C back in the full temperature converter

Convert a different temperature

°F =-7.78 °C

Open the full temperature converter for every other unit.

Nearby values

°F°C
5 °F-15 °C
10 °F-12.22 °C
15 °F-9.44 °C
20 °F-6.67 °C
21 °F-6.11 °C
22 °F-5.56 °C

Questions

What is 18 °F in °C?
18 °F is -7.78 °C (-7.7778 °C to four decimal places).
How do you convert °F to °C?
Use °C = (°F − 32) × 5/9. For 18 °F that gives -7.7778 °C.
What does 18 °F actually mean?
It sits between 5 and 22 °F; the table on this page shows how those compare.