Part-time and full-time hourly workers can calculate their annual salary based on their hourly wage as long as they know the number of hours they’ll work per week in one calendar year. The basic hourly to salary formula is: Hourly rate x hours worked per week x number of weeks worked in one calendar year. For example: An employee makes $25 per hour, works the typical 40-hour workweek, and works 50 weeks of the year (assuming the worker takes two weeks of unpaid vacation per year). $25 x 40 x 50 = $50,000 annual salary You can also use this formula to determine an hourly worker’s monthly salary by dividing the total salary by 12 (as there are 12 months in one year). $25 x 40 x 50 = $50,000 / 12 = $4,166.67 monthly salary You can continue these calculations to determine your bi-weekly or weekly pay, depending on your pay periods. This calculation does not take into consideration overtime pay, income tax deductions, or employee costs such as Social Security.