Welcome to the First Column IT Tech Blog

HomeBlog
How to Get Your Spreadsheets to Accurately Add Time

How to Get Your Spreadsheets to Accurately Add Time

September 9, 2024

Handling time calculations in a spreadsheet can often feel frustrating—especially when you’re just trying to add them up. Luckily, both Microsoft Excel and Google Sheets have built-in functions specifically designed for this purpose, making the process more manageable.

Here’s a quick guide to help you get started, no matter which spreadsheet program you use.

How to Use the Dynamic Time Function for Time Calculations

While relying on a specialized formula to add times may seem complex at first, it actually gives you more precise control over your calculations, ensuring your time sums are both accurate and practical.

To use the Dynamic Time Function, you need to start with an initial time value. Let’s say we use 12:00:00 AM, ensuring the data is formatted as "Time." In Excel, this can be adjusted from the Home menu in the dropdown box above Number, while Google Sheets has the adjustment in the Format menu, where you find the Number option and Time can be selected.

Now, let’s break down the formula. For simplicity, we’ll assume we’re working in row one, starting with cell A1:

=A1+TIME(0,0,0)

In this formula, A1 contains your starting time, while the TIME function breaks the adjustments into hours, minutes, and seconds. Since we haven’t made any changes yet, both A1 and the result cell would show 12:00:00 AM.

Next, you’ll want to replace the zeroes in the formula with actual time values. These values can be drawn from other cells to sum up the total time. Your formula might then look like this:

=A1+TIME(B1,C1,D1)

Here, B1, C1, and D1 represent the number of hours, minutes, and seconds you want to add to the time in A1. For example:

If A1 starts at 12:00:00 AM, and B1, C1, and D1 are populated with 2, 4, and 6, your result will be 2:04:06 AM.

If B1 is 9 and D1 is 38, your final time will be 9:04:38 AM.

It might feel tricky at first, but once you get the hang of it, the Dynamic Time Function can be a powerful tool—whether you’re calculating deadlines or estimating the completion of tasks or processes.

Return to our blogs soon for more great tips and tricks using some of today’s most popular productivity tools like Microsoft Excel.

Previous Post
June 20, 2025
“Find” the Secrets Behind the Ctrl +F and Ctrl + G Keyboard Shortcuts
The Ctrl + F keyboard shortcut is incredibly useful, especially when you need to find specific text on a page… but did you know it is capable of so much more than that? Today, we want to go over some specific use cases for this keyboard shortcut and how you can use them in Google Docs and Microsoft Word.
June 18, 2025
Transform Your IT from a Money Pit to an Asset
Many businesses are under the impression that their IT, despite being a necessary cost, is just that: a bottomless pit for the company’s hard-earned money. However, this impression could be a sign that the business is not utilizing its technology effectively. Let’s look at three signs that your organization might need to reconsider its relationship with IT spending and how they contribute to your company’s overall impressions of IT (as well as its productivity).
June 16, 2025
Use the MACH Architecture Framework to Plan Your Business’ Future
Businesses tend to strive for agility, meaning that they want to make changes quickly and effectively as their needs change. Technology often holds them back from making these changes. You can bypass this roadblock through the MACH architecture framework, a way to build a flexible, scalable, and future-ready IT infrastructure to suit your business’ needs.

Have a project in mind?

Start with our free consultation. We will provide a detailed proposal and firm quote based on your specific IT support needs. All at a predictable monthly cost per seat.
Free Consultation - Sign Up Here