Work Hours Calculator
Working hours per day, week, month and year from your schedule, breaks and days off, with a full-time share.
Your schedule
Filled in with example values. Replace them with your own.
Optional
Shows your hours as a share of full time (FTE). Enter the full-time week where you work.
Results update as you type.
Result
Work hours: 40 h a week, 1,880 h a year (156.7 h a month on average)
Hours a week
40hours
- Hours a year235 working days
- 1,880 h
- Hours a monthAverage: yearly ÷ 12
- 156.7 h
- Hours a week, over the yearAverage, including days off
- 36.15 h
- Hours a dayPaid working time
- 8 h
How it’s calculated
Hours a day
8.5 h − 30 min = 8 h
Hours a week
8 h × 5 = 40 h
Working days
5 × 52 − 25 days = 235 days
Hours a year
8 h × 235 = 1,880 h
Hours a month
1,880 h ÷ 12 = 156.7 h
How the work hours calculator works
Enter how long you are at work each day, any unpaid break, how many days a week you work and how many working days you take off in a year. The calculator turns that schedule into working hours per day, week, month and year, and can compare your week with a full-time week.
The formula
Hours a day = Hours at work − Unpaid break
Hours a week = Hours a day × Days a week
Working days = Days a week × 52 − Days off
Hours a year = Hours a day × Working days
Hours a month = Hours a year ÷ 12
Worked example
You are at work 8.5 hours a day with a 30-minute unpaid lunch,5 days a week, and take 25 days off a year:
- Hours a day: 8.5 − 0.5 = 8
- Hours a week: 8 × 5 = 40
- Working days: 5 × 52 − 25 = 235
- Hours a year: 8 × 235 = 1,880
- Hours a month: 1,880 ÷ 12 = 156.7 on average
Assumptions and limitations
- A year is 52 weeks. The one or two extra days in a calendar year are not counted.
- Every working day has the same hours. For shifts that vary, use average hours or the Time Card Calculator.
- No holiday allowance or full-time week is assumed; both are your own figures.
Frequently asked questions
Why is a month not just 4 weeks?
A year has 52 weeks, which is 4.33 weeks a month on average. The calculator works out the hours for the whole year and divides by 12, so a monthly figure is an average: a real month has between 20 and 23 weekdays.
What should I count as days off?
Working days you do not work in a year: paid leave, public holidays that fall on your working days and any other days off. Enter your own total; the number of holidays differs between countries and employers.
What is a full-time share or FTE?
Full-time equivalent compares your weekly hours with a full-time week. 30 hours against a 40-hour week is 0.75 FTE, or 75%. What counts as full time is set by your employer or local rules, so you enter it.
Should I include my lunch break?
Enter the hours from start to finish and the unpaid break separately. The calculator takes the break off, so the result is your working time. Leave the break empty if your breaks are paid.
How do I add up the actual hours from a timesheet?
Use the Time Card Calculator. It adds up start and end times for each day, takes off breaks and can work out pay and overtime.