Working Hours Calculator
Calculate total working hours over a period based on days per week, hours per day, and vacation.
Enter your values and click Calculate
How It Works
The calculator first finds net hours per day by subtracting break time (in minutes ÷ 60) from your total daily hours. For example, 8 hours minus a 30-minute break (0.5 hours) gives 7.5 net hours per day. It then calculates total working days as (days per week × number of weeks) minus vacation days. Total net hours equals net hours per day multiplied by total working days. Average weekly net hours is net hours per day multiplied by working days per week. Average monthly hours apply a 52/12 multiplier to convert from a weekly rate to a monthly rate, accounting for the fact that months average 4.33 weeks rather than exactly 4. If break time equals or exceeds daily hours, or vacation days exceed total scheduled days, the calculator returns an error rather than a zero or negative result.