How Many Hours Are in a Month

Calculating hours in a month

Average month calculation

• Average month length: A typical month has 30.44 days
• Hours in an average month: 30.44 days × 24 hours/day = 730.484 hours

Specific month calculations

• 31-day months: January, March, May, July, August, October, December
  • 31 days × 24 hours/day = 744 hours per month
• 30-day months: April, June, September, November
  • 30 days × 24 hours/day = 720 hours per month
• February (non-leap year):
  • 28 days × 24 hours/day = 672 hours per month
• February (leap year):
  • 29 days × 24 hours/day = 696 hours per month

Practical applications

• Full-time work hours: For payroll purposes, a standard work month is often calculated as 173.33 hours (40 hours/week × 52 weeks ÷ 12 months)
• Part-time work hours: Calculate using the formula (weekly hours × 52 weeks) ÷ 12 months for monthly hours calculation
• Project scheduling: Use NETWORKDAYS function in spreadsheets to calculate working days in a month, then multiply by hours per day to determine how many hours are in a month for the project

Variations in month length

• Julian calendar: Established 12 months with lengths of 30 or 31 days, except February with 28 days (29 in leap years), affecting the calculation of hours per month
• Gregorian calendar: Current standard calendar, adopted in 1582, with the same month structure as the Julian calendar, used for modern monthly hours calculations

FAQ

How many hours are in a typical month?

A typical month has approximately 730.484 hours. This is based on the average month length of 30.44 days multiplied by 24 hours per day.

Do all months have the same number of hours?

No, the number of hours varies depending on the specific month. 31-day months have 744 hours, 30-day months have 720 hours, and February has either 672 hours (non-leap year) or 696 hours (leap year).

How can I calculate the hours in a specific month?

To calculate the hours in a specific month, multiply the number of days in that month by 24 hours. For example, for a 31-day month: 31 days × 24 hours/day = 744 hours.

What is the monthly hours calculation for full-time work?

For payroll purposes, a standard work month is often calculated as 173.33 hours. This is based on 40 hours per week multiplied by 52 weeks and divided by 12 months.

How do leap years affect the hours per month calculation?

Leap years affect February's hours per month calculation. In a leap year, February has 29 days instead of 28, resulting in 696 hours instead of the usual 672 hours for that month.