# Thread: How to calculate the estimated time to execute test caes?

1. ## How to calculate the estimated time to execute test caes?

Hi All,
Advice me how to calculate a estimated time to execute test cases. For ex: To execute 100 test cases how do the estimated time will be claculated?

2. ## Re: How to calculate the estimated time to execute test caes?

Exactly the same way that you would estimate how long it would take you to do anything else.

3. ## Re: How to calculate the estimated time to execute test caes?

Ram,
If you think about it you are asking a question that requires someone with an understanding of the application(s) you are testing, the type of testing you are performing and the people you have running the tests.

I have tests that take about 30 seconds to run and other that last several hours; however these are specific to the projects I'm working and coun't be applied to your project.

You could try estimating the time based on historical data from other projects or just make a guess. If you are building a plan you need to include any assumptions so that people are aware that if you've said testing will take 100 person-days what your margin for eror is.

4. ## Re: How to calculate the estimated time to execute test caes?

Thank you Bill

5. ## Re: How to calculate the estimated time to execute test caes?

Here is a formula I use all the time:

users = (delay + response) x throughput

solve for the quantity you are interested in.
Units must be the same for time.

6. ## Re: How to calculate the estimated time to execute test caes?

Linda Wilkin posted some good information in the Estimation and Planning Forum

http://www.qaforums.com/cgi-bin/foru...062;p=3#000036

7. ## Re: How to calculate the estimated time to execute test caes?

Estimation cannot be done just like that chennai...if u r working for an company which is CMM assessed then naturally your QA guys would be coming behind you to get the inputs from u for estimation (testing)...we have soo many methods for estimating testing activities such as wide-band delphi, cocumbo, lines of code etc..each has its own significance...in short you would need to create diff scenarios to arrive at the estimation value for ur test estimation..for more ellaborate details u can search for estimation techniques in CMM methodologies forum of this website..

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