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
September 5, 2025
Tip of the Week: How to Boot Your PC In Safe Mode
Diagnosing issues with your PC can be challenging, and that’s because an operating system is inherently a complicated piece of technology. If you’re looking for a way to isolate the problem and diagnose it, we typically recommend you work with a managed service provider (like us) to make it happen. If you’d like to try things out for yourself, however, you can use Safe Mode to examine your PC in its base form to see if you can find the root cause of the issue.
September 3, 2025
Be Prepared for When Ransomware Strikes
There is a seemingly infinite number of cybersecurity threats out there, but there are few threats more dangerous than ransomware. If a business hasn’t taken precautions against it, ransomware can (and will) find ways to extort money, hold data hostage, and threaten that organization’s continuity. Today, we want to cover what ransomware does, what you need to do to prevent it, and what to do if you’re attacked.
September 1, 2025
Unlocking the Power of Standing Desks
Are you tired of that afternoon slump, the achy back, or just feeling generally sluggish after hours of sitting? Well, what if I told you there's a simple change you can make that could improve your workday and boost your well-being? We're talking about the mighty standing desk.

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