Practice and Review
To convert from Fahrenheit to Celcius or centigrade you need to subtract 32 degrees from the Fahrenheit temperature and then multiply the difference by five. Finally divide the product by nine. See the formula below:

To convert centigrade or celcius to Fahrenheit, multiply the centigrade temperature by nine and then divide the product by five. After you do that add 32 degrees to the total. See the formula below: