Man-days > Man-months/Man-hours Calculator

Calculate man-months (MM) and man-hours (MH) from man-days (MD). Useful for project management and effort estimation.

Calculation Results

Man-months (MM):

0 MM

Formula: 20 MD ÷ 20 days/month

Man-hours (MH):

0 MH

Formula: 20 MD × 8 hours/day

About Effort Units:

Man-day (MD: Man Day): Effort of one person working for one day
Man-month (MM: Man Month): Effort of one person working for one month
Man-hour (MH: Man Hour): Effort of one person working for one hour

Note: Working days and hours may vary depending on the organization or contract. Generally, calculations are often based on approximately 20 working days per month and 8 hours per day, but please adjust as needed.

How to Use

Enter the man-days value you want to convert in "Man-days (MD)".
Adjust "Working Days per Month" and "Working Hours per Day" as needed.
Man-months (MM) and man-hours (MH) are automatically calculated upon input.
Click the "Reset" button to return to initial values.