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Age, Part 2
By Richard Rost   Richard Rost on Twitter Richard Rost on LinkedIn Email Richard Rost   6 months ago

Checking the Accuracy of Original Age Calculations

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In this video, we will examine the Age calculations in my original Microsoft Access Age video and see just how accurate they are. I built a database to run through 10 million date calculation iterations, and it turns out the original formula is 99.91% accurate. I will, however, show you a more advanced formula that is always 100% accurate. 

Rabid Follower (a YouTube Subscriber) says: I think dividing by 365.2524 could lead to erroneous results pretty often, and it's not "1 in 5000" like you said... It’s more like 1 in 486 from my calculation.


Members will see exactly how I built my database to perform my calculations to check my accuracy. 

Silver Members and up get access to an Extended Cut of this video. Gold Members can download the database template from class plus get access to the Code Vault. If you signed up on YouTube you have to contact me so I can set up your account here on my web site. If you're not a member, Join Today!


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Calculating Age Upload Images   Link 
Ina van Rooyen 
2 months ago
Hi Richard, using your code for calculating age, is it possible to include months and days as well, and not just the year?
Adam Schwanz
2 months ago
You can get the TOTAL months or days by using the same formula with m or d instead of yyyy. I'm guessing what you want isn't that simple though, you want to see the leftovers right?

I was able to get leftover months by doing the month calculation - (yearcalculation*12).

Leftover days on the other hand.... I'm lost, maybe Richard has an idea.
Scott Axton
2 months ago
Ina -
Calculating days is easy.  Just D1 - D2
Months a little more difficult because of February.  If you are not real concerned about that just multiply years from the age calc x 12.
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