Not only are Celsius and Fahrenheit degrees different sizes ... And to do it the other way around: 72 Fahrenheit is 40/2, which is 20 Celsius. You can even use 30 instead of 32, ...

From Celsius to Fahrenheit: Double the Celsius number and add 30. Formula: °F ≈ (°C × 2) + 30 From Fahrenheit to Celsius: Subtract 30 from Fahrenheit and divide by 2. Formula: °C ≈ (°F - 30) ÷ 2 ...

Every once in a while, you may see a temperature in Celsius instead of Fahrenheit. Your car thermometer may revert to the wrong system and you don’t know how to change it, for example. Since ...