Added: 9 October 2018
[Games and Quizzes]

The Amazing Days Alive Calculator

Bonus Poem

We can count up to ten, we can count to a hundred
and these are two numbers that we understand
And we can take one, multiply by the other,
and in this way get ourselves up to a grand

But much more than that and it starts to lose meaning
the mind just can't feel the big numbers it knows
I guess it's just that we get too far away from
our trusty friend old Mister Fingers and Toes

And so we use years when we count up our birthdays
but then there's the problem of having so few
and really it's days we have, that's what we're spending
and every day we get one brand spanking new

So don't let too many days spin off uncounted
This year thing is nonsense, a terrible trap
We hope that each one of your days will be happy
except that there's bound to be some filled with crap


Ever wonder how many days you've been alive?

Please note, this Days Alive Calculator calculates the total number of days you have been alive, NOT the number of days OLD you are. There is a difference of one day. For example, the day you were born was your first day alive on earth. But you're not one day old until 24 hours have passed, i.e., until the next day. Capisce?

Enter your birthday:

Year (YYYY):
Month (MM):
Day (DD):
Days Alive Machine


1 October 2011 00:57:42 securitygearshop

I wont live long enough to reach 15000

30 September 2011 22:28:29 Jabril


28 September 2011 11:09:53 Matthew Doucette

Correction... I was wrong and your script was right. And excel does match it. :)

28 September 2011 11:06:19 Matthew Doucette

P.S. I mean leap years as in more than just every 4, as year 2000 was not a leap year, 2400 will be, etc.

28 September 2011 11:05:11 Matthew Doucette

Are you forgetting about leap years? Do the same calculation in Excel and it's off. You should have it exactly right if you are claiming an exact day count.

19 September 2011 21:42:04 super smartgirl

i lol love this

19 September 2011 09:13:33 Amoeba


15 July 2011 06:52:09 Richard

Thank you, John and Abby Schoneboom X

9 July 2011 20:25:37 stevie d

This is a very useful tool & the poem is a wonderful reminder about the importance of each day. Thanks for setting it up & making it available for everyone free of charge. Blessings.

6 May 2011 00:10:56

That's really cool!

28 April 2011 19:29:45 jenna

This website rocks my kids and I have a blast finding out how many days old we are.

12 April 2011 11:52:04 Tom.

Great. Thanks.

24 March 2011 17:38:41 John S

Indeed it does.

24 March 2011 17:27:21 Confused Human

Does this calculator also include the Leap Years?

23 March 2011 12:12:26 John S

Oooh! I know! I know how! If you happen to have access to a MySQL server, you could type: SELECT DATEDIFF(date_of_death,date_of_birth) where both dates were in the format yyyy-mm-dd. Other than that, you could always do it the old-fashioned way, take the complete years, multiply by 365, add an extra day for each leap year, and count the days lived in the year of birth and the year of death.

23 March 2011 11:49:15 Torranosaurus

Anyone know how to calculate how many days a person already dead has lived????

18 March 2011 02:22:10 Smart Pixie

*December 7th

18 March 2011 02:18:55 Smart Pixie

oh okay, i get it now!! thanks John, i am ,in fact, planning to celebrate my 5000th on the 2nd of December!

14 March 2011 07:35:28 John S

Hi Smart Pixie, I hope you remember to celebrate your 5000th day in about a year! The method used here is to count the number of days you've been here, so it's 365 days for each full year except for leap years when it's 366, plus whatever number of days in your first year and the current year. The quirky thing about the Bonkworld Method as opposed to probably most other methods is we count your first day as Day One not Day Zero. It's "Days Alive" not "Days Old." In other words on your second day on earth, you'd be one day old, but in our calculator, it's your second day on earth, so it would come up as 2 days alive. We were interested in what was the 5000th, 10,000th etc day a person was present on the planet.

14 March 2011 06:24:17 Smart Pixie

hi guys i was wondering if someone could explain to me the method of this, im a bit confused!! oh yeah im 4,732 days old (12 years)!

6 March 2011 19:26:08 Oliver Twist

Hi REALLY love your calculator. I really needed it because my b-day was in September, and i never got a chance to have a party. This helped me so that i can have a 3,834th day anniversary this year. Thanks greatly!

3 March 2011 17:24:50 Jay P

Excellent, really enjoyed the poem!

22 February 2011 07:31:12 twisst

After that were getting pretty damn optimistic!

22 February 2011 07:28:35 twisst

After that were getting pretty damn optimistic!

12 February 2011 16:06:18 father of missing

Thanks for this, I have book marked it!
You should consider building an app for @pple and call it "Day's since calc"
I'm using it to calculate how many days since my boy went missing. (78 days today) :(
Please find FB group "Help Find J.J." for more information. Sorry this wasn't funny or cute. I am the father of a missing 19 year old, and I miss him very much. please forgive.
 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10