How do you calculate your federal,socail security and medicare with hold for filing single with 3 children and head of house hold?

I'm closing this thread since this has been well covered over here:
https://www.askmehelpdesk.com/taxes/how-calculate-taxes-deducted-weekly-salary-8699.html

We appreciate if you don't double-post like that. Not fun to take the time to answer someone, just to discover it's already been dealt with on another post. As long as you do it within 24 hours, you can delete a post if you find a better place to put it.