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
August 1, 2025
Tip of the Week: Minimize All
How often do you find yourself overwhelmed by the sheer amount of clutter on your desktop? You might dig through a pile of applications, windows, files, and so much more, and it can be difficult to make sense of it all and be productive. Thankfully, there is a rather simple tool to help you clean up your desktop and focus on one window at a time.
July 30, 2025
Why Double and Triple-Extortion Are So Scary
Ransomware is bad, and you can’t take any chances with it if you want to keep your business safe. Understand that it might seem like we’re exaggerating, but we’re not; ransomware really is as bad as it comes, and when you’re faced with double or even triple extortion, you’ll be put in a tough spot that no business owner wants to find themselves in. Today, we want to cover what these terms are and why they’re so bad.
July 28, 2025
What Is Legacy Technology Costing Your Business?
It is certainly tempting to squeeze every last drop of life out of existing equipment. After all, why spend money on new computers or servers if the old ones still technically work? You may view this as frugal, but ironically not spending on the updated IT your business needs can lead to leaving significant revenue on the table. The truth is, holding onto outdated hardware can silently, yet significantly, bleed your business dry.

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