Excel Speedup & Optimization Tips by Experts [Speedy Spreadsheet Week]

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As part of Speedy Spreadsheet Week, I have emailed a few renowned Excel experts and asked them to share their tips & ideas to speedup Excel. Today, I am glad to present a collection of the tips shared by them.

Excel Speedup & Optimization Tips by Experts

Excel Speeding up & Optimization Tips by Hui

About Hui:
Hui (Ian Huitson) has been writing & contributing to Chandoo.org for more than 2 years. Many of you know him from Formula Forensics & Data table related articles on Chandoo.org. See about Hui page for more about him.

In no particular order:

  • Minimize the use of Volatile Functions
  • Organize your workbook layout and data methodically
  • Where possible use fixed values or Named formulas instead of lookups even if the values only change rarely, flag those for manual checking
  • Don’t Start equations with a + that actually adds 0.4% calculation time
  • Minimize use of the Data Table command to running summaries only at the end of a project
  • Review the logic of the model and all if’s or lookup choices for necessity or alternatives
  • Use negatives instead of multiple positives where appropriate in conjunction with If’s and Lookups
  • Learn about Conjunctive Truth Tables, they Rock for reporting
  • Array formulas can do the work of dozens of normal cells, but use cautiously
  • Use Named Formulas and UDF’s instead of multiple Helper Cells/Rows or Columns
  • Minimize of us Conditional Formatting
  • Minimize use of linked workbooks especially if over network drives
  • Take an advanced Excel course like the ExcelHero Academy
  • Minimize the use of Excel 2007

Links:

Excel Speeding up & Optimization Tips by George

About George:
George runs Excel Unusual, where you can learn about using Excel for engineering, simulations & games. In his work, he builds complex spreadsheet models all the time. So I asked him to share a few tactics with us. He wrote 2 articles in response to my request.

Links:

Excel Speeding up & Optimization Tips by Gregory

About George:
Gregory runs Excel Semipro, where he shares Excel tips & ideas. I asked him to contribute to the Speedy Spreadsheet Week. This is what he says,

Tips by George:

To speed up my worksheet files, I have one primary rule: do not use the OFFSET function, which is volatile and can slow things down considerably. In newer spreadsheets I use Tables and The imposing INDEX function to keep ranges automatically updated. In Excel 2003 I use an event-based approach, with named ranges, the worksheet deactivate module, and VBA to keep lists and ranges updated.

Links:

Excel Speeding up & Optimization Tips by Luke

About Luke:
Luke is one of the Excel Ninjas at Chandoo.org where he contributed more than 1000 posts. I asked Luke to share some optimization tips based on his vast experience of using Excel & helping others. This is what he suggests:

  1. In VB, whenever I see a line like Selection.something that’s usually an indicator that I’m using extra lines. Either I need to apply the method directly to the object instead of selecting it, or I need to use a With statement.
  2. With Event macros, don’t forget the all-important lines of Application.EnableEvents = False and Application.EnableEvents = True so that you don’t cause multiple events to be triggered.
  3. See a section of code that you’re repeating? Probably need to make this a separate Sub or Function that you can then reference from the main code.
  4. When building your formula page, think top-down. Cells near the top of worksheet should be referenced in formulas that are below, not vice-versa. XL likes to calculate left to right, top to bottom. Scattering cell references around makes it work harder.
  5. When using large amounts of data that you want to be charted, sometimes I’ll build a formula sheet within the workbook with data, and then just build another workbook that uses a data query (referencing the formula results) to generate the charts.
  6. This might be more along the lines of auditing a worksheet, but sometimes it’s hard to see how I’ve laid out my constants and formulas, and using a worksheet map helps bring things into focus (related: create a worksheet map)

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Excel Speeding up & Optimization Tips by Narayan

About Narayan:
Narayan is one of the Excel Ninjas at Chandoo.org where he contributed more than 1000 posts. I asked Narayan to share some optimization tips based on his vast experience of using Excel & helping others. This is what he suggests:

Period-to-Date and Cumulative SUMs
There are two methods of doing period-to-date or cumulative SUMs. Suppose the numbers that you want to cumulatively SUM are in column A, and you want column B to contain the cumulative sum; you can do either of the following:
You can create a formula in column B such as =SUM($A$1:$A2) and drag it down as far as you need. The beginning cell of the SUM is anchored in A1, but because the finishing cell has a relative row reference, it automatically increases for each row.
You can create a formula such as =$A1 in cell B1 and =$B1+$A2 in B2 and drag it down as far as you need. This calculates the cumulative cell by adding this row’s number to the previous cumulative SUM.
For 1,000 rows, the first method makes Excel do about 500,000 calculations, but the second method makes Excel do only about 2,000 calculations.

Subtotals

Use the SUBTOTAL function to SUM filtered lists. The SUBTOTAL function is useful because, unlike SUM, it ignores the following:
Hidden rows that result from filtering a list. Starting in Excel 2003, you can also make SUBTOTAL ignore all hidden rows, not just filtered rows.
Other SUBTOTAL functions.

Using SUMPRODUCT to Multiply and Add Ranges and Arrays.
In cases like weighted average calculations, where you need to multiply a range of numbers by another range of numbers and sum the results, using the comma syntax for SUMPRODUCT can be 20 to 25 percent faster than an array-entered SUM.
{=SUM($D$2:$D$10301*$E$2:$E$10301)}
=SUMPRODUCT($D$2:$D$10301*$E$2:$E$10301)
=SUMPRODUCT($D$2:$D$10301,$E$2:$E$10301)

These three formulas all produce the same result, but the third formula, which uses the comma syntax for SUMPRODUCT, takes only about 77 percent of the time to calculate that the other two formulas need.

Dynamic Ranges

These are most often created using the OFFSET and COUNTA functions , as in the following :
=OFFSET(Sheet1!$A$1,0,0,COUNTA(Sheet1!$A:$A)-1,1)

Sometimes , when data is stored in the form of records , so that all columns have data to the same extent , there may be several dynamic ranges ; say we have ORDER_ID in column A , CUSTOMER_ID in column B , and the AMOUNT in column C. Thus there may be several dynamic ranges as follows :
=OFFSET(Sheet1!$A$1,0,0,COUNTA(Sheet1!$A:$A)-1,1)
=OFFSET(Sheet1!$B$1,0,0,COUNTA(Sheet1!$B:$B)-1,1)
=OFFSET(Sheet1!$C$1,0,0,COUNTA(Sheet1!$C:$C)-1,1)

These can be simplified to :
=OFFSET(Sheet1!$A$1,0,0,COUNTA(Sheet1!$A:$A)-1,1)
=OFFSET(Sheet1!$B$1,0,0,COUNTA(Sheet1!$A:$A)-1,1)
=OFFSET(Sheet1!$C$1,0,0,COUNTA(Sheet1!$A:$A)-1,1)

These can then be optimized by storing the COUNTA value in a cell , and using the cell reference within the OFFSET formula :
=OFFSET(Sheet1!$A$1,0,0,Sheet1!$F$1,1)
=OFFSET(Sheet1!$B$1,0,0, Sheet1!$F$1,1)
=OFFSET(Sheet1!$C$1,0,0, Sheet1!$F$1,1)

Where Sheet1!$F$1 contains the formula : =COUNTA(Sheet1!$A:$A)-1
For more, refer to MSDN.

Resetting the USED RANGE

Pressing CTRL END will take the cursor and place it on the cell which Excel thinks is the last used cell in the worksheet.
Suppose you do this , and the cursor lands on D27 ; now navigate to any cell which is as far away as you can imagine , say AA3456 ; enter any character , even a space will do ; then clear the cell contents by pressing the DEL key.
Pressing CTRL END will now take the cursor to AA3456.
To reset the USED RANGE , go to the Immediate Window of the VBA Project , and enter the following statement :
Application.ActiveSheet.UsedRange
Your used range should now be reset to its earlier value of D27 ; pressing CTRL END will now take the cursor to D27.
Refer to this Stackoverflow discussion for more.

Excel Speeding up & Optimization Tips by Jordan

About Jordan:
Jordan runs Option Explicit, an Excel VBA blog. He shared these tips with us,

  • When reading and writing to ranges, use .value2 (this is noticeable for large, iterative calculations)
  • Ensure that ALL spreadsheet errors are handled. The most common errors I see ignored are #Ref errors and #Div (for dividing by zero). Use Go To Special… to find these errors and either delete them or use IFERROR to handle them. In my opinion, Excel errors are one of the biggest contributing factors to slow spreadsheets.
  • When using INDEX, include the row or column number even if you don’t need it. For example, if I’m pulling data from only one column, I need only write =INDEX(A1:A10, 1) to pull the first item. However, =INDEX(A1:A10, 1, 1) appears to be a hair faster. Try it.
  • Cut down on Lookup functions. In many instances, the lookup table has already encoded information in the correct order. Instead of looking up, say, Stage 2, just use INDEX on the desired column and pull from row 2.

Thanks to Hui, George, Gregory, Luke, Narayan & Jordan

Many thanks to all of you for sharing these ideas & tips so that we can speed up Excel. If you found these tips useful, say thanks to the contributors.

More on Excel Optimization & Speeding up:

Read these articles too,

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65 Responses to “Make Dynamic Dashboards using Pivot Tables & Slicers [Video & Download]”

  1. claudia says:

    WOW, is all I can say.

    I could not have imagined a dynamic dashboard without getting approved software budget and a team of people involved to create it. Given that I am a relative newbie to excel and actually got here by looking for pivit table help, I imagine that i would not be able to make anything myself. But armed with the demo excel sheet I will press buttons (and I will report back how that went;-)

    Claudia

  2. winston says:

    Good stuff Chandoo, thanks
    The slicer buttons take up quite a bit of room on the dashboard
    Is there a way to make the buttons smaller so we can have more room for charts, tables, and commentary?

    Kind regards,
    Winston

    • Jova says:

      You can resize the slicers! When you click the slicers you can change the height and width of columns and slicers. You can also, under slicer style click "New slicer style" where you can define your own style, which enables you to change most things, including font size.

  3. Gregory says:

    I hadn't seen the Group Option used as you did for the Duration PivotTable. And thanks for showing how to remove the Field Buttons on a PivotChart, I loathe them with all my heart.

    Fantastic design and a great dashboard.

  4. Chandoo says:

    @Claudia.. I am glad you like it. Do let us know how your adventures go.

    @Winston: You can resize slicers or increase the number of columns inside. Unfortunately, we can not readjust the font sizes in slicers. So when you resize, you will see partial text.

    @Gregory: Thank you. I am happy you like it 🙂

    • kris says:

      Hi Chandoo, your dashboards are really professional and simple. I do have some question, if I have the following scenario, could you help to advise : -different data sources eg monthly
      -calculations percentile
      -%difference between financial year

      Thank you so much!

  5. Divya says:

    Hi,

    Thanks for your great information.It has helped me a lot.
    Now,I can build my excel addin for Excel 2010 better with your tips.

  6. Istiyak says:

    Hi chandoo i am new reader for ur site.and really found good stuff and temp. But i suggest u 2 put a guidance step sheet in temp so anyone can understand easily.and also help me to become awesome as ur noume.

  7. Stevros says:

    Chandoo, Wow these are very powerful reports. I will be implementing them straight away. It will save me hours of work. Thankyou so much.

  8. Paul Avenell says:

    Hi Chandoo,

    I love the Slicer, but how do I link a slicer for different data sheets e.g.: Client data on one tab and products on another tab, as I find that as long as you use pivot tables off the same data you can link the Pivot tables using Slicer connections.

    Regards
    Paul

  9. Vivek says:

    I appreciate the work you have posted on your website - very informative and easy to understand. I just wanted to inform you that you can make selections within the slicer too by using Ctrl and selecting the fields you want to group and use as filter.

    I had a question regarding the data used in pivot tables. Is there a way to update the data (eg. a new customer entry) and have the pivot tables and the linked charts in dashboard automatically update? I will search for the answer in other posts so ignore if you have covered it elsewhere.

    Thanks again and keep up the good work.

    -Vivek

  10. Brij Arora says:

    Dear All,

    Me too is a die hard fan of Slicer. it's requirement was arise when management is feeling it difficult to juggle with filters for sales of a particular location, Product Category in Pivot Table.

    Got very positive response when introduced to tackle the above situation. furthermore in slicer setting there would be option to enable or disable deleted data is handy for particular scenario.

    These are eye catching color themes would be like icing on the cake.

    There is one more feature of excel 2010 which proves to be tool for great time saving is "Repeat Labels" in Pivot Tables.

  11. Katherine says:

    This is fantastic!! Your steps were super to easy follow. I can't wait to show my new dashboard off to the boss. Thank you so much!

  12. Van says:

    This might be a little unrelated but I'd like to know which software was used to record your on screen actions? I'd like to use it for tutorials on models that I build for my customers. Thanks!

  13. DV says:

    The slicers are coming in a sorted order... How can i get it in the way it appears in my original data.... The settings show to sort them A to Z or the other way round but they are option boxes and can not be unchecked... What are my options????

  14. Duncan Williamson says:

    I watched the video and then worked through an example of my own, also telephone costs by coincidence. It took me about 30 minutes to do everything. Once you've understood the basics of pivot tables and slicers, all that limits you is your imagination!

    The only thing missing from the video is now to change the number of columns in a slicer: Right click a slicer then Size and Properties, Position and Layout, Layout, Number of Columns ...

    Good page and video.

    Duncan 

  15. soycharnichart says:

    How do you insert 'Year' in the Pivot Table Field List if it doesnt exist in the Master table???

    Thanks 

  16. Manu says:

    Hi,

    Can I disable the multi-selection of the slicer to only allow one selection at a time?

    Thanks in Advance    

    • Chandoo says:

      @Manu.. as of Excel 2013, this is not supported yet. But you can remove slicer heading, clear filter button and style it so that it looks like a single selection. You can also use Macros to ignore previous selection upon multiple selection, but I would not recommend it.

      For an example on styling see - Interactive Pivot Calendar

  17. Devin says:

    Awesome guide!  The dashboard I made blew people away.  I do have one question.  I want the chart title to match what I have selected.  How can I do this without writing macros?

    • Hui... says:

      @Devin
      Lets say what you have selected in in A1
      Select the Chart then Select the Title
      Click in the Formula Bar and type =A1
      enter or click the small arrow to the left of the Formula Bar
      Enjoy

  18. Johnny says:

    Love the slicers and use them often in my dashboards.  Question about the data (specifically the date)  I see the "date of call" column but was wondering how were you able to filter on slicers by year and month when there is only a date of call entered into the data?

    Thanks for your help! 

  19. Jet Copeland says:

    Thanks for taking the time to create this interesting and very useful tutorial!
    I was able to create a similar dashboard in a short time after watching your tutorial. The problem I am having now is how to update the pivot tables and dashboard graphs when a change is made in the raw data. I tried two methods; Change data Source and Refresh. When I used Change Data Source (Options-> Change data source) the values in the pivot tables didn't update. When I tried refresh the values in the pivot tables disappeared as well as the information in the graphs, since the data in the pivot tables no longer existed.
    I have been searching for a solution for a while now but I have unfortunately not been able to solve this problem yet. Any help someone can provide is GREATLY appreciated.
    All the best 

  20. Nigel says:

    Hi, looks great, but how valuable is power view when it comes to financial data? I've been having trouble trying to visualize how I would use power view to report of financial data.

  21. Snooky says:

    Hi Chandoo, you are awesome! Thanks for the good work!

  22. beth says:

    there is duplication for my slicer, probably cause i choose date, time as my options. i changed it to date but still theres a duplication of the same date

  23. Alex Cardoso says:

    Just Great! Thank you for the time to put this together and teach us.

    Alex Cardoso from Indaiatuba, Brazil.

  24. jose says:

    First of all I would like to thank you guys for this post I used this amazing tool with the help of your tutorial to create a dashboard for one single account and my regional manager said "good job, it looks very profesional" she was so impresed that now she wants one daschboard with all the acounts and services she is going to replace her KPI reports with my report !! I smell a promotion!! My demand was a new laptop with MS 2010 and it was granted. now I have allot of work and many many questions to post .. kudos

  25. krishna prasad says:

    Hi Chandoo

    I want to say thanks first because i loved ur tutorials

    i have a small doubt how to insert slicer from external connections

    i searched every where could you please explain how to insert a slicer from external source

  26. Jyothi says:

    Hello Chandoo,

    How to get rid of the > items in Months slicer?

    They are appearing when there is a grouping on the date field in pivot

    Thanks

  27. Emma says:

    Hi Chandoo,

    One problem always bothers me when i use slicer. I have no idea aobut how to change the number format in slicer. Want to display number in slicer as general format, but it always displays other number format such as date.
    I check my source data and it doesn't effect the number format.

    Look forward you or any EXPERTS to solve it. Thanks very much!

    In the end, This website is awesome!!!

    • Sunil says:

      Hi Emma,

      Were you able to resolve your query? I have a similar problem. I use Excel 2013 and the field I'm dropping into the slicer is a currency field ($1.00, $1.05, $1.10 etc.) representing the exchange rates that the user can choose from. The items in the slicer revert back to general format (1, 1.05, 1.1, etc.) although the source field is formatted as currency field. Is there a way to fix this?

      • Chandoo says:

        @Sunil & Emma: You can create a new column in your raw data which has currency as text, using the TEXT formula like this =TEXT(currency_val, "$#,##.00"). Use this column to create the slicer.

        • Sunil says:

          Thanks for the response Chandoo. It works as you suggested. However, if the users were to pick more than one item in the window I'd like to know what is the max value and utilise that value in a DAX formula.
          Also... there is no issue if I were to throw a slicer over a normal pivot. The trouble comes when I choose the 'Add this data to the Data Model' option which I need for the PowerPivot.

  28. Jonas says:

    Hi Chandoo (Or others)

    Is there a way to make the color change, when the value changing after the use of a slicer?

    Lets say the value is 4,5, when i press the slicer, and the value change to 3,5 i would like the color to change. Can anyone help?

    Thank you.

  29. Burendei says:

    Hi Chandoo,

    It was very useful video for me. Thanks.
    But I have one question to ask.
    How can I connect data which is growing in size (rows, records) by time (daily, monthly etc.) to this kind of dashboard?
    Or it is only on select number of data?

    Thank you.

  30. Angela says:

    Chandoo zindabad!

  31. Angela says:

    Hi Chandoo,
    I have been able to create something similar quite easily. The problem that I am facing is that I want to keep the Top 10 filters permanently. If I select one option and then clear the filter, the chart removes the Top 10 filter; I want it to go back to Top 10 filter.

    Is there a solution to this problem?
    Regards

    • Federico says:

      Thanks a lot for the tutorial and for the demo file!
      I have the same problem of Angela: after clearing the filter applyed on P1, the filter on P1 shows all the customers without filtering top 10 (as it was before).
      Thanks!

      Federico

      • Justin says:

        Go to your pivot table, right-click and choose "pivot table options." On the "Totals & Filters" tab check "Allow multiple filters per field."

        • Federico says:

          Justin, thank you so much!
          now after clearing the filter applyed on P1, the filter on P1 shows again top 10 customers.

  32. Roger says:

    Chandoo!
    Just find out your website, I´ll follow your tutorials from now, very useful!
    Great thanks from Brazil!!!

  33. Priya Ranjan says:

    Very useful. Learned a new skill today. Thanks a ton!

  34. Manav says:

    Hi Chandoo,

    This is fantastic! It's going to really help me with some operational reports I develop regularly. Two questions I'm hoping you can answer for me:

    1. How can I use one slicer to manipulate two different pivot charts that came from two different pivot tables?
    2. If I have a slicer in an excel and share that with someone who is on older versions of Excel - what will it look like to them?

    thanks!

  35. Elisa says:

    Hello Chandoo!
    I love the dashboards and have been able to make quite a few, my puzzle is when I am connecting the pivot charts to the slicers, I have to do each individual one and check every single slicer (usually I have about 12, so I end up having to check the 12 check boxes 12 times to connect everything) am I missing something? Is there an easier way to do this?

    Thanks!
    elisa

  36. Hama says:

    Hello Chandoo,

    You make my life easier, am in love withe the slicers!

    I greatly appreciate

    Thanx

    Hama

  37. […] Slicers.  Easy for me to do, but not as easy to explain how I did it.  Fortunately, Chandoo has a Make Dynamic Dashboards using Pivot Tables & Slicers video and download that will do the job nicely.  Suffice it to say it took me <3 minutes to put […]

  38. @jitkumar56 says:

    thank you very much..... 🙂

  39. Jimbo says:

    You are a legend!! Thank you so much - very clear, very helpful indeed.

  40. Shahid says:

    nice player...

    i like to play like chandoo sir.

    i learn somthing about slicer by watching posts.

    it was too difficult to watch and easy to prepare..

    thank you boss.

    God Bless You

  41. MFAC93 says:

    Hi,

    I've built a dashboard on Excel 2010 using Pivot tables and slicers.

    What I would like to do now is duplicate the dashboard on another tab, having it extract from another data source (format is identical to the 1st data source).

    I'm extracting the same metrics, but each data sources measure different product lines.

    Could anyone help me out?

    Thanks in advance,
    M

  42. Vicky says:

    Thank you so much. I learned so much about the slicer because of the video. Just got a quick question. Say I got 100+ Customer name bottons in one of the slicer, and it is time consuming to scroll up and down to find the one to select. Is there anyway I can set in the slicer setting that when I type "E", it automatically take the selectionto to where all the "E" starts? Thanks

  43. TL says:

    Hi there,

    This looks great - is there a way I can use it to compare vs budget, forecast? Is it just a case of renaming one of the field Comparison with the data being "Actual, Budget, Forecast"?

    Thanks!

  44. an irany says:

    hello master!
    please help me.
    i am looking for many file example for Dashboard, but because my English is weak i couldnt fint it in hear.
    please help me.
    thankyou so much.

  45. Ikram Siddiqui says:

    Dear Excel Guru,

    Hope everything is fine with you?

    Can you please help in this Logic, it is a thought only to increase my knowledge SIR?

    Please note that I have been working in Excel file contains two times of our teammates who claims overtime an each calendar month

    My excel file as like this :-

    ROW 1 Days of Month
    ROW 2 Date of Month

    Cell -1 [Time IN(06:00Hrs)], cell -2 [Time OUT(15:30Hrs)] no break in our factory and anything after Eight hours assume as overtime as standard in all across.

    Appreciate if you could help me in providing the best an Exclusive Excel formula to calculate each day overtime excluding staff eight hours regular duty and Friday consider as full day overtime.

    Kindly help me at the earliest convenience.

    awaiting for your expertise.............

    Best Regards / Ikram Siddiqui

  46. Lav Mishra says:

    Thank you for video , will you please provide pivot table with header and sub header like year main header and under that three sub header. How to make dashboard for that.

  47. Praful Patil says:

    Dear Sir,

    How to seperate amount, mention in remarks.

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