Welcome to Chandoo.org - We make you awesome in Excel & Power BI

Welcome to Chandoo.org 😃🙏

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.

Sick leave entitlement vs usage - Excel problem
Excel Challenges

How many people used their entire sick leave entitlement? [Power Query / Excel homework]

Imagine you are the HR analyst at BigLargeCompany. You are asked to find out whether staff at BLC (BigLargeCompany you silly) use up their full sick leave entitlement.

You have two tables – emps & leaves as illustrated below.

sample data - sick leave entitlement vs. usage

Your mission is to find out answers to below questions.

  • How many employees used exactly 100% of their entitled sick leave?
  • How many employees did not take any sick leaves?
  • Listing of all employees who used 100% of their entitlement


Use either Power Query, Excel formulas or any other technique to answer the questions.

Read This »
demo of lenient (flexible) lookup
Excel Howtos

Lenient lookup [Advanced Formula Trick]

We all know VLOOKUP (or INDEX+MATCH) as an indispensable tool in our Excel toolbox. But what if you want the lookups to be a little gentler, nicer and relaxed?

Let’s say you want to lookup the amount $330.50 against a list of payments. There is no exact match, but if we look 50 cents in either direction, then we can find a match. Here is a demo of what I mean.

Unfortunately, you can’t convince VLOOKUP to act nice.

Hey VLOOKUP, I know you are awesome and all, but can you cut me some slack here? 

VLOOKUP is tough, reliable and has a cold heart. Or is it?

In this post, let’s learn how to do lenient lookups.

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top tips to design pretty power bi reports
Power BI

My top 5 tips for designing beautiful Power BI reports

Power BI allows you to create rich, interactive and informative reports. But it is also a massive pain to create beautiful yet functional reports with Power BI. Over the last 12 months of heavy usage, I have picked up a few tricks to speed up my Power BI report design time. In this post, let me share my top Power BI design tips for creating pretty reports.

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Power query tips for accountants
Master Class

5 tips: Power Query for Accountants (and finance people) – Free Masterclass

Do you work with accounting or finance data? You are going to love, no scratch that, adore Power Query. It can save you precious time, make you look like a hero in-front of clients and keep you sane.

In this masterclass, learn all about Power Query for accountants (and other kinds of finance people) & 5 tips.

Why Power Query?

Power Query is a data processing software. Using Power Query, you can create process driven programs (queries) to collect data, clean or reshape it, calculate things and publish final output as a table. Once you create a query in PQ, when the underlying data changes, you just refresh the query and brand new data will be fetched, cleaned and published for you.

For example, you can use Power Query to combine ledger files from various accounts to one master file with Power Query. No more VBA or manual copy pasting. Just one query and you are done.

Read This »
Calculate next Monday in Excel
Excel Challenges

When is the next Monday? [Homework]

Psst. Hey you, yeah, you there… have time for a quick date? A date with Excel that is.

If so, take up this homework problem and post your answers in comments.

Assuming you have an input date in cell A1,

  • What is the formula for finding next Monday?
  • What is the formula for finding first Monday of next month?

Post your answers in comments

Read This »
What is Power BI? what is power query and power pivot?
Power BI

What is Power BI, Power Query and Power Pivot?

In this installment of Power Mondays, let’s go the very basics of it all.

What is Power BI?

Power BI is a software to create and publish interactive, web-enabled reports & visualizations for your audience. You can use Power BI on a PC or web to create things. Once you publish a report (or few visuals), your audience can consume them by using any device – PCs, Macs, Web browsers, Apps on cell phone / tablets etc. 

Read This »
howto get random sample in power query
Power Query

How to get a random sample of data with Power Query

Today’s Power Monday trick is about Power Query. This is based on my experience of working with large volumes of data.

Today I have been building a hotel dashboard (more on this later). As part of the dashboard, I wanted to show a random sample of user reviews. Reviews database had quite a few rows, so I wanted to extract a randomized sample of 100 reviews and show them in the report. When you refresh the report (Data > Refresh), then a new set of reviews will be fetched and shown.

Let’s learn how to generate a random sample with Power Query in this article.

Read This »

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Power BI

Excel & Power BI for you

If you are new to Excel or have never used it, use below links to come up to speed.

Conditional Formatting in Excel

Intro to Excel


Structural Refs

Essential Formulas

Pivot Tables Intro

Budget vs. Actual ChartHave been using Excel for a while? Check out these tutorials to learn more and become awesome.

Advanced Excel

Pivots from Multiple-Tables

Multi-column Lookups

Interactive charts

VBA & Macros

Work with Excel a lot and know your game well? We have some very-advanced topics for you too. Check out:

Training calendar & dashboard in Excel

Array formulas

Excel challenges

Advanced Charting

Data Tables & Simulations

Power BI

Power BI is the most exciting thing to happen for your data since spreadsheets. If you are looking for a new skill to learn this year, I highly recommend Power BI. Check out below tutorials and get started today.


Introduction to Power BI – your first tutorial

Introduction to Power Query

Power BI Example – Commonwealth games tracker

Power Mondays – Learn all about Power BI, Power Query & Power Pivot

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
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

Courses for you


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.


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.


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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