Work hours calculator
Enter your usual start and end times and break for each day of the week. One button copies Monday to the rest of the weekdays. The calculator shows your weekly hours, what that comes to per month, how many hours you have left before 40, and, with a rate, weekly and monthly pay. Use it to check a job offer, plan a schedule or confirm a full-time week.
Totals are hours only. For overtime and gross pay under your state rule, use the time card calculator.
How to use this calculator
- Enter Monday's start time, end time and break. Press Same Mon–Fri to copy it to Tuesday through Friday.
- Adjust any day that differs, and add Saturday or Sunday if you work weekends.
- Read the weekly total, the projected monthly hours and the hours left to 40 in the totals bar.
- Enter an hourly rate to see weekly and monthly pay at straight time.
- Export a CSV or print the schedule to share with a manager or keep for yourself.
How weekly hours become monthly hours
A year has 52 weeks and 12 months, so the average month has 52 divided by 12, which is 4.33 weeks. A 40-hour week is 173.33 hours a month, which is the figure most salary conversions use. The calculator multiplies your weekly total by 52 and divides by 12. Actual months vary between 4 and 5 of any given weekday, so a specific month's paycheck can differ.
What is a full-time week
Federal law does not define full-time employment; employers set it, and 40 hours is the most common threshold. The Affordable Care Act uses 30 hours a week for its own purposes. What federal law does fix is overtime: hours over 40 in a workweek must be paid at one and one half times the regular rate (29 U.S.C. 207). The hours-to-40 figure shows how much room is left in the week before overtime applies.
Breaks in a work schedule
Federal law does not require employers to give meal or rest breaks, but when they do, short rest breaks of 5 to 20 minutes count as hours worked and must be paid (29 CFR 785.18). A meal period of 30 minutes or more is unpaid only if you are completely relieved of duty (29 CFR 785.19). Enter only unpaid meal periods in the break column; many states add their own meal and rest break rules on top.
Schedule versus actual hours
This calculator describes a schedule. Your paycheck is based on hours actually worked, which drift from the schedule through late finishes, skipped lunches and rounding. For actual punches, overtime and state daily rules, use the time card calculator, or keep the record automatically with the PunchStamp app.
Frequently asked questions
How many work hours are in a month?
On average 173.33 for a 40-hour week: 40 times 52 weeks divided by 12 months. A 37.5-hour week is 162.5 hours a month and a 35-hour week is 151.67. Individual months range from about 160 to 184 hours depending on how many weekdays they contain.
How do I calculate my work hours per week?
Subtract your start time from your end time for each day, subtract unpaid breaks, and add the days together. 8:30 AM to 5:00 PM with a 30-minute lunch is 8 hours a day, or 40 hours for five days. The calculator does this and the Same Mon–Fri button fills a regular week in one tap.
How many hours a year is full time?
A 40-hour week is 2,080 hours a year before holidays and leave. Multiply your weekly hours by 52 to get your own figure.
How do I convert an hourly rate to monthly pay?
Multiply the rate by your weekly hours, then by 52, then divide by 12. $20 an hour at 40 hours is $800 a week and $3,466.67 a month. Enter your rate and the calculator shows both.
What does hours to 40 mean?
It is how many more hours you can work this week before passing 40, the point where federal overtime at 1.5x begins. If your schedule already exceeds 40, the bar shows the hours over instead.
Does this calculator include overtime pay?
No. Pay here is at straight time. The time card calculator splits regular, overtime and double-time hours under federal and state rules and estimates gross pay.
Is my schedule saved?
It is saved in your browser on this device. Export a CSV or print it for a permanent copy.
Related calculators
This calculator produces estimates for your own records. It is not payroll, tax or legal advice. Overtime rules vary by state, industry and employer policy. Sources: U.S. Department of Labor, 29 CFR Parts 516, 778 and 785; state labor codes named above.