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Andrew Moss
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Andrew Moss

Excel Aficionado

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Pressure-testing code with multiple LLMs

15 May 2026 3 minute read
Pressure-testing code with multiple LLMs

Today, I asked Copilot to go and sit on the naughty step. I’ll tell you why… Recently, it’s become a regular thing for me to do what I call a…

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A new decade-best 10K time achieved

11 Apr 2026 1 minute read
A new decade-best 10K time achieved

20/12/2025: “I think a sub-45 [10K] is within reach in 2026.” So it proved, as I beat my 45:38 from then with a 44:45 today — a 53-second improvement. I…

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Add line breaks in custom formats

8 Apr 2026 1 minute read
Add line breaks in custom formats

Custom formatting is a great way to control how values are displayed, but formats are designed to sit on a single line, which isn’t always ideal. Take a football match…

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Convert dates from US to UK format in Excel

21 Mar 2026 2 minute read
Convert dates from US to UK format in Excel

When you open a file in Excel with US dates (month/day/year), things can quietly go wrong. The US is the only major country in the world that uses this format…

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Andrew Moss named in ‘Worth a follow’ by Microsoft MVP

11 Feb 2026 3 minute read
Andrew Moss named in ‘Worth a follow’ by Microsoft MVP

Earlier today, I caught up with the latest episode of Unpivot. Host Wyn Hopkins introduced a new feature called ‘Worth a follow’, and I was delighted to be Mark Proctor‘s…

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Excel needs a more powerful formula language

29 Jan 2026 2 minute read
Excel needs a more powerful formula language

Since IMPORTTEXT and IMPORTCSV were announced earlier this month, I’ve seen a few people asking the same question: What’s the point of these functions when we already have Power Query?…

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Global Excel Summit Portfolio

24 Mar 2023 10 minute read
Global Excel Summit Portfolio

Here’s a collection of work I’ve created for the Global Excel Summit. To jump to an item from the Table of Contents, expand its drop-downs first.

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A simple guide to web scraping in Power Automate

1 Nov 2022 5 minute read
A simple guide to web scraping in Power Automate

If you’re a technophobe, you probably want to avoid coding at all costs. Thankfully, Microsoft Power Automate empowers you to create powerful workflows without a jot of code. No-code (and…

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How to Create a Star Rating System in Excel

19 Jan 2022 12 minute read
How to Create a Star Rating System in Excel

Star rating systems are commonly used to rank things like films, TV shows, hotels, and shopping products. Typically, they are done on a scale of 1–5 (or 0–5), although you…

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The Ultimate Guide to Excel Tables

8 Jul 2022 19 minute read
The Ultimate Guide to Excel Tables

A table is defined as “a set of facts or figures systematically displayed, especially in columns.” They structure data in a way that ensures fast and efficient readability. In Excel,…

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Building an Excel Football League Table — Traditional vs Dynamic Array Methods

18 Jul 2020 10 minute read
Building an Excel Football League Table — Traditional vs Dynamic Array Methods

Introduction I am going to show you the different ways you can build a football league table in Excel. Some of the methods are old school, but others utilise Excel’s…

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How Fast is Fast Data Load in Power Query?

11 Dec 2021 8 minute read
How Fast is Fast Data Load in Power Query?

In my previous article, Analysing 10 Million Rows in Excel, I showed you how to load a dataset into Power Query consisting of 10 million rows. In truth, it can…

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How to Build a Custom Ribbon in Excel

25 Jan 2021 18 minute read
How to Build a Custom Ribbon in Excel

Microsoft’s ribbon interface has been with us since the launch of Office 2007. Although met with mixed reaction, over time many acknowledged it was a viable replacement for the ageing…

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