# Thread: How to calculate person day or person month?

1. ## How to calculate person day or person month?

Hi All,

Could any one plz tell me how to calcluate person day or person month?

Regards
Ani

2. ## Re: How to calculate person day or person month?

These terms are measures of the amount of work that can be accomplished in a given time.

You calculate them by determining how much time in the given period (day or month) can usually be devoted to meaningful work.

For example, you might assume that 80% of the time spent in the office can be used for real work, while the other 20% is non-productive work (meetings, emails, etc).

You also need to factor out time to account for typical sick time, vacations, etc.

You might also search on Google for some warnings about these types of calculations. You'll get better results if you search for the term "Man Month":

3. ## Re: How to calculate person day or person month?

The best means of way to calculate the Person day or Person month is Time sheet. Now it based on company Time sheet is how much visible.

4. ## Re: How to calculate person day or person month?

[ QUOTE ]
The best means of way to calculate the Person day or Person month is Time sheet.

[/ QUOTE ]

What does that mean?

5. ## Re: How to calculate person day or person month?

normally i used 8hrs=1 person day
20 person day = 1 month

but it varies from project to project,from client to client and your company norms.
i have seen guys taking 25 person days as 1 month.

6. ## Re: How to calculate person day or person month?

20-22 person days is taken for one person month. Ideal is 20 or 21. All depends.

Cheers
Krish

7. ## Re: How to calculate person day or person month?

In the real world, it is a known fact that though the working hours are 8, the real productive hours fall in between 6 - 7.

I consider 6.5 hours as productive hours &amp; person day

regards
Turi

8. ## Re: How to calculate person day or person month?

I base all of my estimates on 6.5 hours per day, or 136.5 per month. That seems to work well for our organization.

regards,
Ann

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