Webcalculating an annual salary from an hourly rate is simple. Just insert the average number of hours worked per week, the number of weeks of vacation and. Webassuming 50 working weeks per year, if your hourly salary is $18, your yearly salary would be $37,440. The formula for the salary calculator: Yearly salary / 52 weeks / 40 hours a. Webto calculate your annual salary, multiply the rate of pay by the number of hours per week and multiply that by the number of weeks you work in a year: Webconvert hourly wage to yearly salary.