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
December 1, 2025
How to Stop Time Theft and See Everything
For all its benefits, remote work has certainly created some challenges. One major issue is the lack of visibility you have over your employees and the ramifications that could result.
November 26, 2025
How Manufacturing IT Prevents Pricey Maintenance and Repair
Manufacturing equipment costs a pretty penny, so you naturally expect it to drive profits and yield a return on investment. Yet, how often do these machines break down and cost you more than they should? By the time the red light turns on that tells you something’s wrong, you’ve already wasted precious time that you could have been saving with proactive, preventative maintenance.
November 24, 2025
How to Keep Your IT From Holding You Back
Many businesses think of IT as nothing but an expense, often represented by losses on your budgeting reports. You might dump countless dollars into your IT only for it to eat it all up without providing any discernible return on investment. Here’s the truth about IT: when it’s managed properly, it can represent opportunity and investment rather than expense.

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