Conversion table
| Period | Hours |
|---|---|
| Per day (5-day week) | 8.00 |
| Per month (× 4.33) | 173.20 |
| Per month (× 4.35) | 174.00 |
| Per month (× 52 ÷ 12) | 173.33 |
| Per year (× 52) | 2,080 |
| Per year (× 52.14) | 2,086 |
Where the monthly figure comes from
A year has 52 weeks and 12 months, so one month has 52 ÷ 12 = 4.33 weeks. 40 × 4.33 = 173.20 hours. Payroll often uses 4.33 or 4.35 (52.18 weeks ÷ 12, because a year has 365.25 days): 174.00 hours. Convert this schedule to pay with the hourly to salary calculator, or subtract vacation and holidays on working hours in a year.
Frequently asked questions
How many hours a month is 40 hours a week?
40 hours a week is 173.20 hours a month using the factor 4.33 (52 weeks divided by 12 months), or 174.00 hours with the factor 4.35 that some payroll systems use.
Related calculators
- Work Hours CalculatorEnter your start time, end time and unpaid breaks to get hours worked for a day, a week or a pay period in hh:mm and decimal hours. Overnight shifts, overtime and pay are handled automatically.
- Hourly to Salary CalculatorEnter an hourly rate and your weekly hours to see the equivalent annual, monthly, biweekly and weekly pay, or enter a salary to find the hourly rate it represents.
- How Many Work Hours Are in a Year and a MonthEnter your weekly hours, vacation days and holidays to see annual and monthly work hours. The standard full-time answer is 2,080 hours a year and 173.33 a month.