Did you know that MS Excel has a hidden, life altering Easter egg? This is a story of how I found it and discovered joy. Read on.
Almost an year ago, I have quit my job with one of the leading IT companies in the world, to embark on an uncertain but very exciting journey. I have started my own business around MS Excel – creating & selling awesome Excel products & training programs [visit our online store].
This is a continuation of the Chandoo.org Start-up Story posted around the same time last year. Grab a cup of coffee and read it in leisure. Do not expect any Excel tips. 🙂
[PS: if you are new to Chandoo.org, Read this and this before reading this post.]
What is it like to run a small business
When I wanted to leave a stable & well-paying job & start a business several things bothered me. What if my business never picks up? What if I do not generate enough money to sustain my family? What if I grow complacent & make mistakes? What if I get bored or lonely or get demotivated? What if I cannot handle the thousand little things that go in to running a business?
They say, leap and a net will appear. And leap I did. And just as if a switch is turned on, I found answers to all my doubts one by one. I discovered the joy in running a small business around my passion. I made mistakes, but I kept learning. I found help from friends. I made new friendships. I learned how to reduce, automate, outsource areas of work that are not critical. I hired people to help me with customer service & emails. And not one moment, I felt tired, bored or demotivated. In fact, I feel excited every single day about what I am doing.
How is my business doing?
Here is a quick summary of the business:
(April 2010 to March 2011)
- Total paying customers: 2,175 (Repeat customers: 175)
- Revenues: ~$200,000
- Top products – Excel School (743), PM Templates (1148), Dashboard Training (199)
- Consulting clients – Microsoft, Wao Marketing, eNor and more.
- Speaking & Training – Office 2010 Launch Event, International Excel Workshop @ Maldives
- Total Visitors to Chandoo.org – 2.5 Mn
- Visitors who spent more than 15 minutes on site – 787,000
- Number of comments received – 7,790
- Number of articles written – 217
- Press Coverage – MSN, Economic Times etc.
What did I learn in one year of doing this?
Many things. Hardly a week goes by without picking up some new skill or idea. But the most important things have to be,
It is not risky: I had this notion of taking huge risk by leaving a plush job. But then, the risk magically disappeared on day 2. Instead, I see immense opportunity for fun, knowledge, satisfaction and profit. All of which were not possible with my day job beyond certain extent. [Related: Is it scary to start?]
It does not take 80 hours per week: During the first 6 months, I used to work a lot. Most of the time I was inefficient. Then, I analyzed my time (in Excel, what else) and found that I could reduce the number of hours spent on e-mail and other activities to focus on what I love most – Excel, interacting with people and sharing new ideas. Now, I am spending <6 hours per day and I am happy with the results.
You need a supportive family: At least once a day, my son or daughter would walk up to my office-cum-guest-bedroom and knock on the doors, often violently, and scream – “daddy, da.” (meaning, Come out Daddy). Although, my heart would race to go out and hug them, I would say no and continue working.
There were days, when Jo (my wife) would feel lonely as I was locked inside the office room for a product launch or marathon recording session or crafting a dashboard etc.
But, thankfully, I have an understanding wife. So, they would be all smiles when I walk out. Also, I have learned to structure my working hours around my kids sleeping hours. For eg. I would get up at 4AM to do recording.
Saying NO is 100 times tougher than saying YES: While I feel immensely thankful for the growth in my business, it has also bought in a new challenge. There were too many opportunities. So many more than I can handle. I get requests for consulting, training, product development, testing, collaboration and more. Initially I used to say YES to everyone. Soon, I had a pipeline of things to do, with no clear plan on when I will finish everything. Then, I started being picky. I started accepting consulting work for projects which are challenging. I started collaborating with one company at a time. This reduced the workload. But the challenge of saying NO is so much more than YES.
Taking it easy is not so easy: When this blog was my side-business, I used to take it very easily. But during the initial months of making the switch, it was hard for me to take this easily. I would freak-out when my site went down, when a customer dis-liked my product or when I get an email with “Urgent” in the subject.
I learned to slow down things. For eg. I reduced the number of posts per week from 5 to 3. I also roped in more people. Hui, Paramdeep & a few guest authors to write on this blog. Ravindra to help me with emails & customer service. Naturally, this restored my sense of humor and ability to learn new things.
Ask and you shall receive: This is the most important lesson. I used to worry whether anyone would purchase my training or products. But then I realized that by just asking you to purchase, you would consider it. This is how I was able to generate revenues from Excel School, PM Templates and other products.
What next?
I am excited about the way my business has turned out. While I generally avoid from making long-term plans, here are a bunch of things I would continue to do,
- I would like to grow this business slowly and learn new things all along.
- I will continue to share my knowledge, mistakes and ideas with you.
- I will spend a great deal of time with Jo and kids. I love taking long walks with Jo, playing with kids.
- I like connecting with people all around the world and will continue to do so.
- I will continue making awesome products, training programs.
- We (our family) will continue to spend less, live meaningfully and give back a portion of what we make to society.
- I will continue to treat you, my dear reader, as my top-most priority.
Wishing you a happy Easter
I found an Easter egg in Excel. Instead of finding it on Easter day, I find it everyday. And I feel excited, fulfilled, grateful & honored.
I wish you will find your Easter egg. It might be in your profession, hobby, religion or community. I wish you will discover the same joy as I did and continue to spread it.
And if you have already found it, then I feel very happy for you.
Thank you.
Easter Egg photo from tillwe.
41 Responses to “Calculate Elapsed Time in Excel [Quick Tips]”
Hi Chandoo,
To calculate time lapses in excel I usually use the DATEDIF function. Even though is undocumented by MS there is a great explanation of its use in Chip Pearson's site :
http://www.cpearson.com/excel/datedif.aspx
Is pretty easy to use and has great flexibility.
See you and keep Excelling!!!
Another great article, I will be linking to it on my blog.
Oliver:
Yes, I think that DATEDIFF do it better.
Great post! This a fantastic tutorial on calculating elapsed time in Excel that could be helpful even to a novice user. Keep up the useful tips!
Also, the Office community on Facebook could really benefit from you knowledge! Check it out at http://www.facebook.com/office
Cheers,
Andy
MSFT Office Outreach Team
hi, Chandoo !!!
for elapsed time , we can use this unique formula either for hours, minutes or seconds : NOW()-A1)
but using respective special number formats
for hours : [h] ==> 46553
for minutes : [m] ==>2793212
for seconds : [s] ==> 167592763
We can also use mean duration for years (orbital period of the Earth around the Sun : i-e tropical year) which is : 365.25 days
and mean duration for month : 365.25/12 days
be Excelent !!!!
@Oliver... Thanks for the pointer to datediff(). I will update the post with information about this as well.
@Glen... thanks for the linklove 🙂
@Andy... Welcome. Thanks for telling us about the office community on FB.
@Modeste ... that is very cool. I will remember these formatting codes for an upcoming article on number formatting codes 🙂
Great tip Chandoo! I use the formula to calculate years elapsed all the time. It can seriously help save a ton of time with calculations. Also, NETWORKDAYS is one that helps and can seriously impress a boss. Keep up the great work here!
No problem! I will definitely be directing people with tough Excel questions to your blog. Keep up the great posts!
Andy
MSFT Office Outreach Team
Hi,
always great posts and a good way to start my day
but regarding the elapsed time calculations: have you never noticed that there is a result difference between using =TODAY()-A1 and using =NETWORKDAYS(A1,TODAY())?
try it for A1= a Monday such as 21sep09 and "today" is e.g. a Thursday; you get 3 or 4 respectively as a result, depending on the formula used; this is because formula =networkdays() always includes both the startdate and the end date and not only the time between these 2.
This is easily corrected/compensated bij always adding a -1 to the =networkdays() formula because the majority of us will count startday as day 0 and then the result will be consistent across the different formulas.
However, you then get into trouble if you calculate the networkdays for a date further in the past and where either the start or end date falls in a weekend.
just thought to point this out as to me these formula's are not interchangeable just like that!
have a great day!
Paul
=DATEDIF([DOJ],TODAY(),"Y") & " Y, " & DATEDIF([DOJ],TODAY(),"YM") & " M, " & DATEDIF([DOJ],TODAY(),"MD") & " D"
This will fix your 30 Days problem
I calculated the time diff between two date+ times by subtracting 2 cells & custom formatted it to "d hh:mm" format.
E.g.
Cell A1 04-Jan-12 6:00 PM
Cell A2 05-Jan-12 4:45 PM
Cell A3 0 22:45 (formula: =A1-A2)
Wat shud i do 2 not display the "zero" values i.e. no. of days in this case is zero hence the cell shud display " 22: 45" and not "0: 22: 45".
@Amol
Try the Custom Format code:
[
<1] hh:mm ; [>=1] d “d” hh:mmHi Chandoo,
If possible to compute the interval of time and date in one column.
In column C I would like to compute the total days and hours . What formula ? Please help
Example.
Column A Column B
2/13/12 3:30 AM 2/14/12 12:00 AM
In referenc to Elapsed time in months
To calculate the elapsed time in months, we can use the formula =(NOW()-A1)/30. This returns the value in 30 day months.
I use to apply formula =ROUND((TODAY()-A1)/30,0). Today, I faced a peculiar situation, A1 has date 01-Mar-2009, and today being 01-Mar-2012, it should be 36 months, but it is showing 37 months!!
Any suggestions to avoid such errors?
Regards,
Prasad DN
All I want to do is add up a series of times and receive a reply that gives me a total. What I used to do was subtrace the end time from the start time and format the result as [hh]:mm but this doesn't seem to work anymore. How has Bill Gates confounded me?
@Pete
I use Excel 2010 and it still works
The times must be entered as times in the format hh:mm:ss or hh:mm without seconds
Adding up times is as simple as =Sum(Range) or =Sum(A2:A10)
then using a Custom Number format as you have mentioned [h]:mm
If this isn't working, 2 ideas
1. Check your times are times and not text
2. Can you share your data or file with us?
My hospital tracks times from patient arrival to various procedures or treatments. When those times cross over midnight, the regular formulas (2nd time minus first time) don’t work because the result is negative and Excel (2007) won’t show a negative number in time format.
I couldn’t find a solution here (chandoo.org) but found one elsewhere that worked and it’s very simple. I would like to share it.
Assuming 1st time in A1 (column for patient arrival time) (11:00 PM), and 2nd time in B1 (column for x-ray given) (12:30 AM)). Should be 1:30 elapsed time.
=B1-A1+(B1<A1) [This comparison is the key to the solution.]
=12:30 AM – 11:00 PM + (12:30 AM < 11:00 PM)
=0.0208 – 0.9583 + (True)
=-0.9375 + (1) [This is the key! If it is false, Excel adds 0. If it’s true, Excel adds 1 and that is what corrects the negative number. Now Excel can interpret the number as a time.]
=0.0625
Converted to hh:mm = 1:30
I wrapped this formula inside an IFERROR one to alert my data entry person if she messed up and applied it to lots of different columns and it has worked wonderfully. No more complaints from the data entry person who just plugs in times from medical charts.
Very interesting solution. Thank you so much for sharing it with all of us.
HI,
I am working on a Xl application..
I want to capture time between two clicks.
Ex, in my application during run somewhere I press OK button and then I click Cancel.. I want to measure time between these two clicks... Is it possible??
Pls help on this...
@shashidhar
The answer is Yes
You will have to add an appropriate VBA event to start and stop a timer.
There are techniques which can time to the millisecond so maybe look those up on the net
WOW!!!!!! I truly love your excel time format program! WHOOOO! I am very interested in how the time formats "update" (manually on a physical keyboard) that "updates" the time into its respective decimal time formats, such as:
YYYY.yyyy, HH.hhh, etc...
How do those formulas or equations work if not in Excel mode? Example: TI calculators, Word, or any other computer language programming? Just wanted to see how it works. E-mail me at Ultra64848689Ti@gmail.com.
Thanks again for an EXCELLENT Excel program into decimal time formats!
Here's an idea: how about creating an APP for iOS and Android? Just wanted to point that out. =-D
Regarding the elapsed time in months:
I made this function to determine the time elapsed since a date using the number of days in each respective month. It's a simple subtraction and I think it works very well:((Year Today-Year A1)*12++(Month Today - Month A1)+(Day Today/Days in Month Today)-Days A1/Days in month A1)
Here's the function:
=((YEAR(TODAY())-YEAR(A1))*12)+(MONTH(TODAY())-MONTH(A1))+(DAY(TODAY())/DAY(DATE(YEAR(TODAY()),MONTH(TODAY())+1,0))-DAY(A1)/DAY(DATE(YEAR(A1),MONTH(A1)+1,0)))
Have a Merry Christmas everyone!!
I need the ability to calculate how much progress we have made between two dates and I want to represent that as a percentage.
I am thinking this would be a combination of today, networkdays & dividing the days elapsed vs the total days. Then it should be as easy as formatting my cell. Any help would be greatly appreciated.
@Christian
Your correct
dates are just numbers and so you can use simple math to derive the percentage
=(Date Now-Start Date)/(End date-Start date)
that will give you a number between 0 and 1
which you can format as a %'age
is there a way out to calculate the productivity for an employee
The day start is at 08:00 and day end is 20:00
The start date / time is recorded and end date / time is recorded
I want to calculate the timelapse taking into consideration the day begin and dayend time.
If the work begins and ends the same day, a simple formula b1-a1 would compute the productivity.
But if the process remains incomplete and is carried over to the next day, then timelines to be computed accordingly
to clarify,
if start time of an activity is 03/15/2015 18:00 hrs and end time is 03/16/2015 11:00 hrs, then the resultant formula should be 5 hrs (ie 18:00 to 20:00 hrs on day1 + 08:00 to 11:00 hrs on day2) ie 2+3
please guide.
Venkatesh, try (b1-a1)-0.5
This will subtract the fixed amount of time between shifts, 12 hours. If the time between shifts varies, then you could reference other cells that contain the variables.
Please help. when I use the networking days formula I get a date (2-may-00) I want actual number of days. I managing projects and I need to know how many days have passed since we received a project to the current date. Please help Thanks
@Aria: Just format the cell as general or number. that will fix the problem.
You rock! I looked at 17 other sites and they all did not work. Yours did. Thanks!
Hi folks ...
calculating age in years , months and days
=text(now()-a1,"yy")&" y " &text(now()-a1,"mm")-1 &" m "&text(now()-a1,"dd") & " d"
Hi, the Elapsed time in days [ =TODAY()-A1 ] works great however, if I do not have a date in A1, it shows 42157. Anyway to get it to display 0 or a Null value?
@Dan
=If(A1="",0,TODAY()-A1)
I get #NAME? and the formula does not work.
Hi Chandoo,
This might be a challenge - I am looking to calculate elapsed time between two columns
Start date Complete date
9/9/2015 7:21 10/2/2015 11:01
I need to take into account the following:
1) The employee works 7:00-3:15 pm each day
2) Std Work hours are 7hrs 45 min each day
3) Need to take into account all holidays in between start and end date
4) Work week is Mon through Friday.
Can you help?
Thanks!
Hi, i have a certain name (wilium) in column A and against this name i have 2 option, 1 Done and 2 Inprogress. i want that i count done again wilium and count inprogress against wilium separately. which formula will work for it??
Hi, i have a certain name (wilium) in column A and against this name i have 2 option, 1 Done and 2 Inprogress in column C. i want that i count done again wilium and count inprogress against wilium separately. which formula will work for it??
Year, month, day results for DoB.
The formulas I have found on the net and the datedif function do not work. This is what I came up with using a Microsoft support paper dated April 1997 with some modifications:
IF(OR(A2>$A$1,ISBLANK(A2)),"",IF(YEAR($A$1)=YEAR(A2),0,IF(MONTH($A$1)>=MONTH(A2),YEAR($A$1)-YEAR(A2),YEAR($A$1)-YEAR(A2)-1))&" years "&MONTH($A$1)-MONTH(A2)+IF(AND(MONTH($A$1)<=MONTH(A2),DAY($A$1)<DAY(A2)),11,IF(AND(MONTH($A$1)=DAY(A2)),12,IF(AND(MONTH($A$1)>MONTH(A2),DAY($A$1)=DAY(A2),ABS(DAY($A$1)-DAY(A2)),DAY(EOMONTH(A2,0))-DAY(A2)+DAY($A$1))&" days")
Check it out...
Hi, Augustin
what about :
calculating age in years , months and days
=YEAR(NOW()-DoB)-1900 & " y " & MONTH(NOW()-DoB)-1 & " m " & DAY(NOW()-DoB) & " d"
Hi Chandoo,
I am looking for help with the elapse time formula. I have a recruitment tracking sheet where we track the number of days the positions are opened, and when they are finally closed.
The opened positions will have a running turnaround time (TAT) formula and I am using this formula:
=NETWORKDAYS (start_date, TODAY (), Holidays2018)
Now, without disrupting the running TAT formula, how do I then get the TAT to stop when we have a final end date? All the information below is row:
- start_date --> Cell A
- TODAY () --> cell B
- end_date --> Cell C
Hope you are able to help. Thanks!
Interesting question. Try this:
Thank you for this helpful article. I was trying for days now to figure it out. Now the only issue I have is that if I do not have a value inputed for =TODAY()-[@[Date Precured]] Date Precured then it shows 44055. How can I get it to leave it blank if there is no data? Thanks again!!!