Simple Excel Formula to Calculate All-time High, Trailing 12 Month High Values [Quick Tip]

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It is not too sunny here, but I am going to put on my business man hat. At the end of each month, I ask myself if my business (chandoo.org that is) has performed better or worse. One simple way is to look at previous month’s numbers and then I know how good the latest month is.

But thanks to awesome people like you, my business is growing every month. So mere comparison with previous month’s values is not enough. I would like to know, for eg. if the latest month is,

  • The best month ever
  • The best month in last 12 months (trailing 12 months)

Now, it would be a shame if I have to find these answers manually. So I write an Excel formula. That is right!, a formula to tell me if the latest month’s value is all time best, best in last 12 months.

Analyze Sales Values by finding All-time high, trailing 12 month high values - Excel Formulas

How to write such formulas?

Oh, the formulas are really simple. More so, if you compare it with the effort it takes to make a month all time best in sales (or any other metric).

Assuming we have a bunch of sales numbers by month in the range B6:C30,

To test for All time high condition:

  • In cell D6, write =C6=MAX($C$6:C6)
  • Drag the formula to fill remaining cells in column D
  • Now you will see a bunch of TRUE and FALSE values. TRUE means the corresponding month’s sales is an all time high.
Tip: See how we are using $C$6:C6 in the MAX. This style of referencing is called as mixed cell referencing. By using this, when you fill the formula for remaining months, the range inside MAX grows. Thus for each month we get the maximum sales value thus far. more ».

To test for Trailing 12 month high condition:

  • We will test this condition in column E.
  • In E17 (trailing 12 month high can not be calculated for first 11 months…) write = C17=MAX(C6:C17)
  • Drag the formula to fill remaining cells in column E
  • Now you will see a bunch of TRUE and FALSE values. TRUE means the corresponding month’s sales is a  trailing 12 month high.
Tip: The range C6:C17 is relative. Thus when you fill the formula down, it changes to C7:C18, C8:C19… referring to previous 12 months. more ».

Download Example Workbook

I have prepared a simple example file. Download it to understand these formulas.

How do you analyze your sales data?

Apart from the above techniques, I also use line charts & trend lines to understand the sales trend. Also, I use pivot tables to segment my sales based on product, customer type, region etc. Since my business is new, I do not have previous year values for many products. But where possible, I compare sales from last month same year to see how well the product has grown / shrunk. I do not set any targets at monthly level as I aim to enjoy the process. So I do not use bullet charts or target vs. actual charts per se.

What about you? How do you analyze sales or similar data? What metrics do you use to gauge the performance? Please share using comments.

Resources to Understand Your Sales Data better:

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22 Responses to “Formula Forensic No 019. Converting uneven Text Strings to Time”

  1. Joe Carsto says:

    Why not let the TIME function take care of the math:
    =TIME(LEFT(TEXT(A1,"000000"),2),MID(TEXT(A1,"000000"),3,2),RIGHT(TEXT(A1,"000000"),2))

    • Ben Niebuhr says:

      I was going to point out the same thing, except to note that useing the time function and doing the divide method are not interchangeable.

      I have spent hours investigating a spreadsheet working with a couple of years worth of hourly data, and found that the reason things weren't working is because the rounding on the divide method is only close to the correct time values. In order to have it work for comparisons, (like sub-totaling by time value, or pivoting) you MUST use the TIME function.

      Great use of the TEXT function, Hui. I will be using this concept for sure.

  2. Elias says:

    Why not just.

    =TEXT(A1,"00\:00\:00")*1

    Regards

    • Joe Carsto says:

      Elegant!

    • Manick says:

      Hi Elias,

      I tried to use your formula. But, it doesn't seem to work for me. I am getting an error message "The formula you typed contains an error". It seems I have the problem in using \: in the format. How can I overcome this?

      Thanks

      • Greg G says:

        Manick, it isn't the /: that causes the problem. If you copy/paste it, you're getting “'s instead of the actual quotation marks that Excel uses. Change the quotation marks by deleting from the pasted formula and retype them.

      • modeste says:

        Hi Manick...
        use this alternate formula :
        =1*TEXT(A1,"00"":""00"":""00")

        note twice double quote each side of :

  3. Elias says:

    @Manick,

    Did you copy the formula and pasted in Excel or did you typed? Also, do you use , or ; as separator of arguments?

    Regards

    • Joe Carsto says:

      @Elias: I had no problem using your formula, in fact, I have used your method to convert a number such as 20120419 to an Excel date using =TEXT(A1,"0000\/00\/00")*1. Thanks for posting.

      • Elias says:

        @Joe: For date convertion you can use this as well.

        =TEXT(A1,"00-00-00")*1

        Regards

        • Joe Carsto says:

          Sweet! It appears this also works with =TEXT(A1,"0-00-00")*1. I come from the old days when you counted every byte. I also like to try an make formulas as small as possible for the fun of it 🙂

  4. Haseen says:

    Elias's suggestion is the simplest, but here is yet another way with TIME and MOD functions...

    =TIME(MOD(A2/10000,100),MOD(A2/100,100),MOD(A2,100))

  5. Since the seconds appear to always be 0, why not simply the input to minutes and above and save yourself the trouble of typing those zeroes...

    0 => 0:00
    1 => 1:00
    10 => 10:00
    100 => 1:00:00
    etc.

    Then just use this formula...

    =TEXT(A1,"0\:00\:")*1

    • Elias says:

      @ Rick, the numbers to convert are no typed, they are imported. Then your formula will return the wrong result.

      Regards.

  6. Hmm! My formula lost some backslash-zero combinations (two of them to be exact). The formula was supposed to be this...

    =TEXT(A1,"0\:00\:\zero\zero")*1

    where the words "zero" should actually be the number 0. Another way to write the formula is this...

    =TEXT(A1,"0\:00\:""00""")*1

  7. Rajagopal says:

    Hi Master,
    While writing the formulae you have considered only upto "seconds factor" . I think you should take the centi-seconds factor also to achieve best results. Please look into it and rectify the problem...?

    For Example.
    In horse racing timings are noted in minute, seconds and centi-seconds, like if a horse finished in 70 seconds over a scurry of 1200 metres, is noted as 1.10 min. Nowadays it is noted in centi-seconds everywhere, like 70.00 if you want to convert it to centi seconds (should multiply by 100) = 7000 centi seconds. If you put this figure into your formula as a general number (7000) it will return as 1:10:00. As per your formula, it should be taken as 1 hour 10 seconds 0 minutes. However for a racing enthusiast like me it can be taken as 1 minute 10 seconds also.

    Just look what happens if we race goers use this figure as 7000 centi seconds in your formulae, it will correctly show as 1 minute 10 seconds(?) Suppose a horse finishing over a 1200m in 70.60 seconds or in racing terms written as 1.10.60 mins, where 1 minute 10 seconds, & 60 centi-seconds can be counted as 7060, if you put this figure in the formula it will return as 1 minute 11 seconds, that is correct.

    My point is if you can incorporate Centi Seconds in the formulae, it would be of great help to us also.

    Thanks and regards.
    Rajagopal (Mumbai)

  8. Vishy says:

    Awesome techniques !

    I tried with 235960 just to see if it will fail but this is great.

  9. CMC says:

    Although a little longer, this too work:

    =CHOOSE(LEN(A2);A2/(24*3600);A2/(24*3600);LEFT(A2;1)/(24*60) + RIGHT(A2;2)/(24*3600);LEFT(A2;2)/(24*60) + RIGHT(A2;2)/(24*3600);LEFT(A2;1)/24 + MID(A2;2;2)/(24*60) + RIGHT(A2;2)/(24*3600);LEFT(A2;2)/24 + MID(A2;3;2)/(24*60) + RIGHT(A2;2)/(24*3600))

  10. Converting uneven Text Strings to Time I have imported some data that comes in as a number that I need to convert to h:mm.

  11. Sudhir Gawade says:

    Just come across this while googling

    find interesting challenge and come up with this 

    =TEXT(TEXT(SUBSTITUTE(A1,RIGHT(A1,1),""),"000000"),"00\:00\:00")

  12. Renee Keel says:

    I need to convert a string of numbers representing average minutes, to reflect correct time values. For example, the numbers below currently represent 5.79 minutes, 15.82 minutes, etc.

    I need to convert these values to their correct corresponding value within time parameters. So 5.79 would be something close to 5 minutes and 45 seconds.

    5.79
    15.82
    3.92
    12.40
    6.70
    3.62

    I know there has to be a way to compute this in Excel, it can do anything, I believe!

    Thank you for any and all assistance~

    • Chandoo says:

      @Renee... You can use a formula like this. Assuming A1 has the minutes.seconds,

      =INT(A1) + MOD(A1, 1)*0.6

      If you want to see it in 5 minutes 45 seconds format, use

      =INT(A1) & " mins " & ROUND(MOD(A1, 1)*0.6,2) & " secs"

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