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
May 30, 2025
A Practical Guide to Managing Shadow IT in Your Business
Shadow IT may have a pretty cool-sounding name, but its impacts on your business are anything but. The term “shadow IT” describes any technology used in the business setting without the express knowledge and go-ahead of the IT department. While it may be common, it certainly isn’t good… despite often having the best intentions behind it.
May 28, 2025
How to Win Back Customers After IT Issues
Let's be honest, technology can sometimes cause big headaches for businesses. Maybe your main computer system crashed right when you were busiest, or you had a scary data problem. These tech troubles can frustrate you and your customers.
May 26, 2025
The Medical Industry Relies on a Lot of IT
Step into any modern medical facility, and you'll witness a complex interplay of human expertise and sophisticated technology. From the front desk to the operating room, information technology is not just a convenience; it's vital for nearly every aspect of patient care and operations. 

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