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Welcome to Chandoo.org.
My mission is to make you AWESOME in your work.

Hello, Namaste & Kia Ora. Welcome to Chandoo.org. 

My name is Chandoo. My mission is to make you awesome in Excel and Power BI.
I do this by sharing Excel & Power BI tutorials, examples, tips, videos and articles on this website. I live in Wellington, New Zealand with my beautiful wife Jo & our twins Nishanth & Nakshatra. Take a minute to browse various topics of the site to see how I can help you.

Thank you and welcome.

Chandoo.org Podcast Sessions

CP053: Excel Data Validation for Dummies

In the 53rd session of Chandoo.org podcast, let’s talk about data validation.

What is in this session?

In this podcast,

  • What is data validation
  • How Excel DV compares with database & software DV?
  • Types of data validation rules
  • List & custom rules explained
  • Input & error messages
  • Alternatives to data validation
  • Enhancing data validation
  • Removing data validation rules
  • Homework problem for you
  • Resources & show notes
Read This »

Unpivot and then pivot for clarity (case study)

Or more appropriately titled, the one where Power Query solves the problem in less time than it takes you to say Get & Transform Data.

Recently, one of my students Mr. K, sent me a pivot table problem.

Today my boss asked me “how much we paid to staff since the inception of our business with their respective date of joining?” He wanted to know, level wise summary of the last 16 years (on Quarterly / Year wise basis).

The records appended from the database month wise. Have a look to the file and give your ideas.

Mr. K’s data looked like above.

Read This »

“How Trump happened” in Excel [visualizations]

During last week, an alert reader of our blog, Jørgen emailed me a link to “How Trump happened“.  It is an interactive visualization by Wall Street Journal. Jørgen asked me if we could replicate the visualization in Excel. My response: “Making a new chart in Excel? Hell yeah!”

Read on for awesome visualizations and full explanation.

Read This »

Analyzing half a million complaints – Customer Satisfaction Scorecard [Part 3 of 3]

This is the final part of our series on how to analyze half a million customer complaints. Click below links to read part 1 & 2.

  1. Complaint reason analysis – Part 1
  2. Regional trends & analysis – Part 2

Customer satisfaction scorecard

In the previous parts of this case study, we understood what kind of complaints were made and where they came from (states). For the customer satisfaction scorecard, let’s focus on individual companies.

Read This »

Analyzing half a million customer complaints – Regional Trends [Part 2 of 3]

This is part two of our three part series on how to analyze half a million customer complaints. Read part 1 here.

Analyzing Regional Trends

As introduced in part 1, our complaints dataset has geographical information too. We know the state & zip code for each complaint. Please note that zip codes are partial or missing for a 10% of the data.

In this article, let’s explore three ways to analyze regional trends.

  1. Regional trends by state, product & issue
  2. Complaints per million by state
  3. Complaints by zip code
Read This »

Analyzing half a million consumer complaints [Part 1 of 3]

How would you analyze data when you have lots of it? That is the inspiration for this series.

Let’s meet our data – Finance Industry Consumer Complaints

As part of open data initiatives, US government & Consumer Financial Protection Bureau maintain a list of all consumer complaints made against financial institutions (banks, credit unions etc.) You can download this data from the catalog page here. I have obtained the data on 1st of February, 2016. The download has 513,824 records. Each row contains one complaint.

In this and next two parts of the series, we are going to analyze these half a million complaints to find insights.

Read This »

Latest Video

for more videos…

Learn Excel Step by Step

Everything from Power Query to Dashboards, Shortcuts to Formulas, Pivots to Charts in one course.

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Excel & Power BI for you

What people say about Chandoo.org

A relative told me about your website since I need help creating pivot tables, I learned how to do it in a matter of minutes thanks to your tutorial. Where have you been all of my excel troubled life, I look forward to viewing your videos on youtube as well as on your site. You are going to make me EXCELLENT at Excel!
Soulful Sista
Excel Sister
Hi Chandoo, I just want to say I really appreciate your Excel tutorials and all your hard work that it took to compile the huge library of content. Your site has helped me gain a better understanding of Excel which has helped me in my job. You are helping the world!
Felix H
Accountant
Throughout my life as an administrative assistant; your site has been invaluable to me. And now that I’m a recruiter; it’s still an amazing resource for when I need to teach someone something quickly. You are a friggin’ Rock Star!!! Thank you for everything you do.
Jason S
Recruiter

Courses for you

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Excel School

Learn how to work with data, make calculations, pivots, create amazing charts and powerful dashboards from scratch using Excel School + Dashboards program. Suitable for analysts, managers or professionals who need to use Excel often.

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VBA Classes

Use VBA to automate your tasks and build powerful spreadsheet based apps. In this course, learn all about how to program with VBA, how to use the language and object model to your advantage. Suitable for people who build a lot of things with Excel.

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Power BI

Power BI, the newest technology from Microsoft is a game changer. You can build rich, interactive and informative displays for your audience using Power BI. In this course, learn all about Power BI, Power Query and Power Pivot and how to combine them to achieve awesome results.

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