The “rule of 40″ for converting temperatures to CelsiusNovember 17th, 2012 at 10:20 am by davidyeomans under Weather
With thousands upon thousands of international visitors in town this weekend for the F1 races, now is a good time to brush up on the math we use to convert temperatures from Fahrenheit to Celsius, and vice-versa.
If you need to perform a quick conversion, remember the ‘rule of 40′…
Fahrenheit to Celsius: (___ degrees F) + (40) x (5/9) – (40) = ___ degrees C
Celsius to Fahrenheit: (___ degrees C) + (40) x (9/5) – (40) = ___ degrees F
And for those of you headed out to the race, the latest forecast is looking just about perfect!