GWAOw! 4 – Forms History by Martin Hawksey

In this episode of GWAOw!!! we look at the Google Workspace add-on, Forms History by Martin Hawksey.

About Forms History for Google Forms

Unlike Google Docs and Google Sheets, there is no version history in Google Forms. Forms History is Martin’s solution to this problem. This free add-on allows you to review the version history of your form and make saves at critical points in your form build process.

This is a must-have tool for teams collaborating on a Google Form.

You don’t need to install Forms History for all users who are collaborating on your form for it to run. The add-on will keep track of your edits and provide opportunities for you to make saved versions of your form along the way.

After installation, simply click the add-on puzzle piece in the top menu of your Google Forms project and then select Forms History > Open. A sidebar will appear indicating daily versions. You can then expand these sections to see breakdowns of activity over the day.

From the sidebar, you can also save a current version or navigate to a version that has been saved previously. Intuitive icons make this process very easy.

Some Unavoidable Limitations

There are some limitations to how Google Forms stores updated data for Google Forms and you might find that small edits within around 20 minutes might be consolidated into one version. To be clear this is not a fault of Martin’s add-on it is just how Google Forms handles how it keeps track of different versions.

About Martin Hawksey the developer

Martin is one of the biggest names in the Google Workspace Google Apps Script community and is the mastermind behind the Apps Script aggregate site Apps Script Pulse and host of the long-standing apps script Google workplace YouTube series Totally Unscripted, as well as being a Google recognised Developer Expert and Google Cloud Innovator Champion. This is a fella you can trust which gives me great peace of mind when installing this app.

Get the Add-on

Check it out on the Google Workspace Marketplace: Forms History

Or learn more from the add-on’s homepage.

You can also see a great interview with Martin on Forms History hosted by Alice Keeler.

The Video

Check out more Episodes of GWAOw! here!

How to Easily Calculate Sales Tax (GST 🦘) in Google Sheets

Adding tax to the sales price or subtracting tax from a total price of an item in Google Sheets (GST)[Update 16 Jul 2022]

We have Goods and Services Tax (GST) here in Australia; it is a sales tax on all sorts of things. You might have something similar in your own country. If our business turnover is more than $75,000 AUD for the year we need to register to pay this GST. This means that we have to include the tax in the total value of an item. In this tutorial, I’ll show you how to do this quickly in Google Sheets.

You can calculate the Total Price of an item including Sales Tax in two ways:

  • Add tax to the sales price: Sales Price + Sales Tax = Total Price
  • Subtract tax from the total price: Total Price – Sales Tax = Sales Price

Adding Tax to the Sales Price

This is the easiest and often most common approach. Here we set a sales price and then calculate how much tax needs to be applied to the total price.

Let’s say we have $100 and we need to add 10% tax to our total price.

Calculating the taxable amount of a value in Google Sheets step 1

First, we get the amount of tax we need to add. We do this by multiplying the Sales Price by the Tax percentage.

Sales Price = Sales Price × Tax percentage/100

Sales Price = Sales Price × Tax as a decimal

10 = 100 × 0.1

If you have set up the formatting of your cells in your Google Sheet as I have in the image above where the format for A2 is dollars ($) and B2 is a percentage (%) then you don’t have to worry about converting the percentage to a decimal. Google Sheets will handle that for you. Take a look at the formula:

=A2 * B2

=100 * 0.1


Calculate the taxable percentage portion of a value in Google Sheets

Note that we use the asterisk symbol (*) in Google Sheets (and in most digital calculations) to multiply items.

All we then need to do is add the Sales Price to the Sales Tax:

= A2 + C2

= 100 + 10

= 110

Add the sales price to the tax added to the item in Google Sheets

We can combine both formulas like this:

= Sales Price + Sales Price * Sales Tax

= A2 + A2* B2

= 100 + 100 * 0.1

= 110

Adding sales tax to an amount in Google Sheets

Remember that in our order of operations in maths the multiplication of the Sales Price by the Tax rate as a decimal will occur before adding the Sales Price.

Practice: Go ahead and try and change the Sales Price or Tax % and see what results you get.

Adding Sales Tax Video

Subtracting Tax From the Total Price

Sometimes we don’t want to change the price of an item for a customer, so we will subtract the amount to tax from the original price that we offered them.

Say that we have been selling a widget for $100, but now we have reached the GST threshold and need to include sales tax on the item. Our customers are going to be cranky with us for adding an extra $10 bucks onto the price. Instead, we decide to include the tax in the $100 sales price of the widget.

So, how do we do this?

This time we start off with the Total Price and the Sales Tax.

Subtracting the sales tax from the total price of an item in Google Sheets Part 1

We’ve used the same example before, where our total price is $100.00 and our tax rate is 10% on the item.

To calculate the Sales Tax included in the Total Price we divide the total price by, one plus the tax rate as a decimal multiplied by the tax rate as a decimal.

Total Price /( + Tax as decimal) * Tax as decimal

= A2 / (1 + B2) * B2

= 100 / (1 + 0.1) * 0.1

= 100 / 1.1 * 0.1

= 9.09

Calculate the tax included in the total value of an item in Google Sheets

Then to get the Sales Price, simply subtract the Total Price from the Sales Tax:

= Total PriceSales Tax

= A2C2

= 1009.09

= 90.91

Calculate the sales price after tax based on a total price value in Google Sheets

Subtracting Tax Video

Get The Google Sheets Sales Tax Calculator

Google Sheets Sales Tax Calculator

You can grab your very own copy of the Google Sheets Tax Calculator here. Plus there are Google Sheet tabs with the examples above included.

Google Sheets Sales Tax (GST) Calculator

If you have found the tutorial helpful, why not shout me a coffee ☕? I'd really appreciate it.

Did you enjoy the tutorial? Want to upskill and get a solid step-by-step course to become a pro at Google Sheets? Check out my course, Google Sheets: Learn the Essentials with Three Detailed Projects. Sign up today.

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  • 2022-07-16: Added two videos. One for each section of the tutorial.

GWAOw! 3 – Crop Sheet by Eric Koleda

In this episode of Google Workspace Add On Walkthroughs (GWAOw!), we take a look at Crop Sheet by Eric Koleda.

Crop Sheet allows you to quickly crop a Google Sheet tab by your own selection or by the data in your sheet tab.

With over 1,000,000 installs this is a simple Google Workspace Add On that completes a specific job well.

What’s the alternative? A somewhat slower process of removing outer columns and rows by a whole lot of clicking, shortcut commands and time wasted.

Eric was a Developer Relations Infrastructure Manager at Google before moving to (An all-in-one document tool for collaboration) as their Developer Advocate. I’d be pretty confident in this add on. 😉

You can also find the code for Crop Sheet on GitHub.

Check it out on the Google Workspace Marketplace: Crop Sheet

Check out more Episodes of GWAOw! here!

Displaying Odd and Even Row Data in Google Sheets

Have you ever wanted to split a list of Google Sheet rows in two by odd or even? Or had a time when you wanted to display all items in a range by odd or even ids in two separate lists?

You don’t have to do this manually, we can work smart and create a formula for each of these scenarios to easily separate your data.

In this tutorial, we will cover three scenarios:

  1. Separate a range of data by odd and even rows.
  2. Separate a range by odd and even where a selected column has a list of numerical ids.
  3. Separate a range by odd and even where a selected column contains a list of alphanumeric ids.

If you want to play along, you can get a copy of the starter sheet here:

Odd and Even | Starter Google Sheet*

*Contains Easter Eggs.

Continue reading “Displaying Odd and Even Row Data in Google Sheets”

GWAOw! 2 – ImportFromWeb by NoDataNoBusiness

In this episode of Google Workspace Add On Walkthroughs (GWAOw!), we take a look at ImportFromWeb by NoDataNoBusiness.

ImportFromWeb is a powerful web scraping tool for Google Sheets that allows you to grab data from any website. The creators call it IMPORTXML on steroids.

You can use ImportFromWeb as a Google Sheets function or use one of their incredible templates.

This tool is ideal for Google Workspace businesses that need to find and store live data from websites. Whether you are scouring the web for new client prospects or keeping an eye on your competition, this might be the tool for you.

In this walkthrough, we really just scratched the surface on ImportFromWeb’s capabilities. We walk through three practical examples covering retrieving a list of books from a web store, listing the first page of Google Workspace jobs on and then getting the latest Tweets for Google Workspace on Twitter. I’ve added the formulas below from the video for you to try out once you installed the add on.

I also managed to score us a 40% discount when you purchase ImportFromWeb after your trial, use the code YAGISANATODE40 at check out to get the discount or use this link:


Check it out on the Google Workspace Marketplace: ImportFromWeb

Example 1 – Book List (xpath)


Selector: //*[@id="product-results-p1"]/li

Example 2 – Job List (css selectors)


CSS Selector: .jobTitle

CSS Selector URL: .jcs-JobTitle/href

Example 3 – Twitter (jsRendering) – Playground


Selector: article

Check out more Episodes of GWAOw! here!

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