This calculator combines some of the tools allowing you to make estimates used in salary negotiations and plans for changes to your overall benefits package.
This calculator might be used by someone who has traditionally had a salaried job but is now considering an hourly wage contract -- or vice versa. It helps you bound the numbers you need to make sound decisions and feel confident you considered the most important elements of a compensation question.
if you fill out a detailed salary report, you will be asked to provide things ranging beyond income, including the type of employer you manage, whether you manage other people, and at what levels those direct reports work
The number of week day hours in a year is 
calculated as 40 hours per week X 52 weeks.