# Welcome to the Vertex42 Blog

Our most recent articles are listed below. To jump to a specific category of posts, see the category list to the right. The links at the top of this page will take you to some of our most popular collections of Excel and Word templates.

## Custom Number Formats in Excel Learn how to create and use custom number formats in Excel to display numbers in thousands or millions, add units such as “ft” or “lbs”, change font colors, add special symbols, and more.

## Using Pivot Tables to Analyze Income and Expenses This introduction to using Pivot Tables in Excel shows how to analyze monthly income and expenses by account, category, date, etc. Download the example spreadsheet to follow along. By guest author and Microsoft MVP, John MacDougall.

## Create a Running Balance in Excel that Allows you to Insert, Delete, and Move Rows A basic running balance formula can lead to hard-to-detect errors. Learn two ways to create a running balance in Excel that doesn’t break when you delete a row, insert a row, or move rows via cut and paste.

## Introducing the Savings Snowball Calculator Vertex42 has developed a new Savings Snowball Calculator to help you plan how to reach your savings and debt payoff goals. This article provides some background on the savings snowball concept and explains some of the features of the calculator. Questions and comments are welcome.

## Array Formula Examples – Simple to Advanced In Excel, an array formula allows you to do some powerful calculations that you might not be able to do any other way. Learn how to use both simple and advanced array formulas, including nested IF formulas, sequential number arrays, and matrices.

## Text Manipulation Formulas in Excel – The Ultimate Guide This is the ultimate guide to using Text Formulas in Excel such as SUBSTITUTE, LEN, CHAR, CONCAT, TRIM, LEFT, RIGHT, MID, FIND, SEARCH and others. The examples start simple and then build up to more advanced formulas including cleaning up data, splitting text into columns, and converting strings to arrays.

## SUMIF and COUNTIF in Excel SUMIF, SUMIFS, COUNTIF and COUNTIFS are very powerful functions for data analysis. The hardest part is learning how to define the criteria for different types of comparisons. This article shows examples of all the different criteria types, including matching blank and non-blank values.

## Debt Payoff – A Good Investment? Taking a break from Excel tutorials, this article compares paying off credit card debt to investing. Take an in-depth look at interest rates, liquidity risk, limited return, risk of principal loss, and tax efficiency. Perhaps debt payoff is really my best investment.

## Volatile Functions – What’s the Big Deal? A Volatile Function such as RAND, TODAY, OFFSET, or INDIRECT is recalculated every time Excel recalculates. That may be a problem, or it might not be. This article explains why volatile functions may slow performance and also explains why I love them so much.

## Dynamic Named Ranges in Excel A Dynamic Named Range is an awesome way to reference customizable lists. This article explains how to use OFFSET, INDEX, INDIRECT, CHOOSE, and IF to create dynamic ranges. It also explains formulas for finding the position of the last value in a range.

## Create a Drop Down List in Excel I love using drop down lists in Excel. In this article, I’ve tried to explain all of the techniques that I use for making drop-down lists, including simple yes/no options, checkbox substitutes, dependent lists for sub-categories, and using dynamic named ranges.

## VLOOKUP and INDEX-MATCH Examples in Excel Learn how to use both VLOOKUP and INDEX-MATCH and other powerful formulas to do lookups in Excel, from simple to advanced formulas, including multiple criteria and case-sensitive lookups and to get the last value in a range.

## Use DATEDIF to Calculate Age in Excel Learn how to Calculate Age in Excel using DATEDIF and other Excel formulas. Calculate age in years or a combination of years, months and days. Learn an accurate work-around for the “md” option.