Difference between then are as follows:
1)Fahrenheit scale usually used in US where as celsius scale used in all countries
2)Celsius scale is used in metric system but Fahrenheit are not.
3)32 degree difference are there between two scale.
4)The scales start at a different number (0 vs 32), so we will need to add or subtract 32.The scales rise at a different rate (100 vs 180), so we will also need to multiply.
5)Celsius are more common and easy to use than the fahrenheit scale.