If you work on a fixed basis, you can simply divided your annual pay by your pay period. Additionally, if you're on a hourly basis, you would multiply your hourly pay by your hours of work, to get your weekly pay.
If you want your complete home-pay you will need in consider the federal tax & state tax, which is varied by your martial status. Let's not also forget other deductions in place such as W-4 form etc...
