How Many Hours in a Month? Exact Hours by Month Explained 2026
How many hours in a month? The answer depends on the number of days in that month. A month can contain 672, 696, 720, or 744 hours, depending on whether it has 28, 29, 30, or 31 days.
Knowing the number of hours in a month is useful for calculating work schedules, hourly wages, monthly productivity, project deadlines, and time management. Since calendar months have different lengths, there is no single exact number of hours that applies to every month.
This guide explains the hours in each month, how to calculate monthly hours, the average number of hours per month, and the difference between total calendar hours and working hours.
Quick Answer
A month has between 672 and 744 hours, depending on its length.
- 28-day month: 672 hours
- 29-day month: 696 hours
- 30-day month: 720 hours
- 31-day month: 744 hours
A regular 365-day year contains 8,760 hours, giving an average of 730 hours per month. A leap year contains 8,784 hours, giving an average of 732 hours per month.
These calculations use standard 24-hour days and do not adjust for daylight saving time changes.
How Many Hours Are in Each Month?
Each calendar month has a specific number of days, which determines its total hours.
| Month | Days | Total Hours |
|---|---|---|
| January | 31 | 744 |
| February (Regular Year) | 28 | 672 |
| February (Leap Year) | 29 | 696 |
| March | 31 | 744 |
| April | 30 | 720 |
| May | 31 | 744 |
| June | 30 | 720 |
| July | 31 | 744 |
| August | 31 | 744 |
| September | 30 | 720 |
| October | 31 | 744 |
| November | 30 | 720 |
| December | 31 | 744 |
Seven months have 31 days, four months have 30 days, and February has either 28 or 29 days.
This difference explains why monthly time calculations change throughout the year.
How to Calculate Hours in a Month?
Calculating monthly hours requires a simple multiplication formula.
Total Hours = Number of Days × 24
Every standard calendar day contains 24 hours, so multiplying the number of days by 24 gives the total hours.
Hours in a 28-Day Month
February normally has 28 days.
28 × 24 = 672 hours
This is the shortest calendar month in a regular year.
Hours in a 29-Day Month
During a leap year, February contains 29 days.
29 × 24 = 696 hours
The extra day adds 24 hours compared with a regular February.
Hours in a 30-Day Month
April, June, September, and November contain 30 days.
30 × 24 = 720 hours
Hours in a 31-Day Month
January, March, May, July, August, October, and December contain 31 days.
31 × 24 = 744 hours
A 31-day month contains 72 more hours than a regular February.
What Is the Average Number of Hours in a Month?
Although months have different lengths, an average monthly hour count is useful for planning and calculations.
Average Monthly Hours in a Regular Year
A regular year contains 365 days.
365 × 24 = 8,760 hours
8,760 ÷ 12 = 730 hours per month
Therefore, the average month in a regular year contains exactly 730 hours when calculated across the entire year.
Average Monthly Hours in a Leap Year
A leap year contains 366 days.
366 × 24 = 8,784 hours
8,784 ÷ 12 = 732 hours per month
A leap year increases the annual average by two hours per month.
Average Monthly Hours Across the Gregorian Calendar
The Gregorian calendar follows a 400-year leap-year cycle containing 97 leap years.
Its average year has 365.2425 days.
365.2425 × 24 ÷ 12 = 730.485 hours per month
That is approximately 730 hours and 29 minutes.
This long-term average is useful when a calculation requires an average calendar month rather than the length of a specific month.
How Many Working Hours Are in a Month?
Working hours are different from total calendar hours.
A month may contain 720 or 744 calendar hours, but an employee generally works only a portion of those hours.
For someone following a standard five-day, 40-hour workweek, monthly working hours depend on the number of weekdays.
| Working Days | Hours Per Day | Monthly Work Hours |
|---|---|---|
| 20 | 8 | 160 |
| 21 | 8 | 168 |
| 22 | 8 | 176 |
| 23 | 8 | 184 |
These figures assume eight paid working hours per day and do not deduct holidays, leave, or unpaid breaks.
Average Working Hours Per Month
A common payroll calculation uses 52 weeks per year.
40 × 52 = 2,080 hours
2,080 ÷ 12 = 173.33 hours per month
This is a standardized estimate based on 52 weeks, not an exact count of working hours for every calendar month.
For exact monthly payroll calculations, count the scheduled working days in the relevant month and account for holidays, leave, and workplace policies.
How Many Hours Are in a Month for Part-Time Workers?
Part-time employees typically work fewer hours than full-time employees, but the total depends on their weekly schedules.
Using a 52-week annual planning basis:
| Weekly Work Hours | Average Monthly Hours |
|---|---|
| 10 | 43.33 |
| 15 | 65 |
| 20 | 86.67 |
| 25 | 108.33 |
| 30 | 130 |
| 35 | 151.67 |
| 40 | 173.33 |
The formula is:
Monthly Work Hours = Weekly Hours × 52 ÷ 12
For example, someone working 20 hours weekly has an estimated monthly average of:
20 × 52 ÷ 12 = 86.67 hours
Actual hours may differ because of scheduling and calendar variations.
How Many Hours Are in a Month Excluding Weekends?
Excluding weekends changes the total number of hours available during a month.
For a standard Monday-through-Friday schedule, a calendar month can contain different numbers of weekdays depending on which day of the week it begins.
| Month Length | Possible Weekdays | Hours at 8 Hours/Day |
|---|---|---|
| 28 days | 20 | 160 |
| 29 days | 20–21 | 160–168 |
| 30 days | 20–22 | 160–176 |
| 31 days | 21–23 | 168–184 |
These calculations exclude Saturdays and Sundays but do not account for public holidays.
For accurate results, use the actual calendar for the month and year you are calculating.
How Many Minutes and Seconds Are in a Month?
Monthly time can also be expressed in minutes and seconds.
One hour contains 60 minutes, and one minute contains 60 seconds.
| Days | Hours | Minutes | Seconds |
|---|---|---|---|
| 28 | 672 | 40,320 | 2,419,200 |
| 29 | 696 | 41,760 | 2,505,600 |
| 30 | 720 | 43,200 | 2,592,000 |
| 31 | 744 | 44,640 | 2,678,400 |
These conversions are useful for time tracking, programming, data analysis, and scheduling.
How Many Hours Are in Three, Six, and Twelve Months?
For longer periods, the exact number of hours depends on the months and years included.
Hours in Three Months
Three consecutive calendar months do not always contain the same number of days.
For example, January through March in a regular year contains:
31 + 28 + 31 = 90 days
90 × 24 = 2,160 hours
The same period in a leap year contains 2,184 hours.
Hours in Six Months
A six-month period can have different lengths depending on the starting month and whether a leap day occurs.
For an exact calculation, add the number of days in the six selected months and multiply by 24.
Hours in Twelve Months
A complete calendar year contains:
- Regular year: 8,760 hours
- Leap year: 8,784 hours
A rolling twelve-month period may differ from a January-to-December calendar year if it includes February 29.
Why Do Some Months Have More Hours Than Others?
The Gregorian calendar divides the year into twelve months of unequal lengths.
Most months contain either 30 or 31 days, while February contains 28 days in regular years and 29 days in leap years.
Leap years help keep the calendar aligned with Earth’s orbit around the Sun.
Under Gregorian calendar rules, a year is a leap year when it is divisible by four, except century years must also be divisible by 400.
For example, 2024 and 2028 are leap years, while 2026 is not.
This calendar structure produces four possible monthly hour totals.
Calendar Hours vs. Actual Elapsed Hours
The standard formula of days multiplied by 24 works for calendar calculations. However, actual elapsed time between two local timestamps can differ in regions observing daylight saving time.
When clocks move forward by one hour, a local calendar day may contain only 23 elapsed hours. When clocks move backward, a local day may contain 25 elapsed hours.
Therefore, a month containing a daylight saving time transition may have an elapsed-hour total that differs from its standard calendar-hour calculation.
For payroll, software systems, and time-sensitive scheduling, use the applicable time zone and actual timestamps when precise elapsed hours matter.
How to Use Monthly Hours for Salary Calculations
Monthly working hours can help estimate hourly earnings from a fixed salary.
The basic formula is:
Hourly Rate = Monthly Salary ÷ Monthly Working Hours
For example, suppose an employee earns $3,600 per month and works 160 paid hours.
$3,600 ÷ 160 = $22.50 per hour
If the same monthly salary is divided by the standardized 173.33-hour average, the estimated hourly rate is approximately $20.77.
The appropriate method depends on the employment agreement, payroll rules, and whether the calculation uses scheduled, paid, or actual hours.
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Frequently Asked Questions
How Many Hours Are in a 30-Day Month?
A 30-day month contains exactly 720 standard calendar hours, calculated by multiplying 30 by 24.
How Many Hours Are in a 31-Day Month?
A 31-day month contains 744 standard calendar hours. Seven months of the year have 31 days.
Is a Month Always 730 Hours?
No. The 730-hour figure is the average monthly duration across a regular 365-day year. Individual months contain 672, 696, 720, or 744 standard calendar hours.
How Many Hours Are in February?
February contains 672 hours in a regular year and 696 hours in a leap year.
How Many Hours Are in a Month for a 40-Hour Workweek?
A 40-hour workweek gives a standardized average of approximately 173.33 hours per month using 52 weeks divided by 12 months. Actual monthly working hours depend on the calendar and schedule.
How Many Hours Are in 4 Weeks?
Four weeks contain 28 days.
28 × 24 = 672 hours
Four weeks are not always equal to one calendar month.
How Many Hours Are in a Year?
A regular year contains 8,760 hours, while a leap year contains 8,784 hours, using standard 24-hour calendar days.
How Do I Calculate the Exact Working Hours in a Month?
Count the scheduled working days in the month, multiply by the number of paid hours per day, and adjust for holidays, leave, and other schedule changes.
Sources & Verification
The calculations in this guide use the standard Gregorian calendar, 24-hour calendar days, and conventional conversions of 60 minutes per hour and 60 seconds per minute.
The monthly, annual, and leap-year figures are derived mathematically from those definitions. Working-hour examples use explicitly stated schedules and assumptions rather than a universal employment policy.
For exact elapsed-time calculations, local time-zone and daylight saving rules must also be considered.
Before You Go
The answer to how many hours in a month depends on the month you are calculating.
A 28-day month has 672 hours, a 29-day month has 696 hours, a 30-day month has 720 hours, and a 31-day month has 744 hours.
For general calculations, 730 hours is the average month in a regular year. For work schedules, payroll, or project planning, use the actual number of days or scheduled working hours instead of relying on a monthly average.