# How to Make a Countdown Timer in Excel

A countdown timer can help you track how much time there’s left to do a task or until a deadline comes due. Below, I’ll show you how you can make a countdown timer in Excel that can track days, hours, minutes, and seconds. In order to make it work, we’ll need to use some VBA code, but it won’t be much. And if all else fails, you can just download my free template at the end of the post and repurpose it for your needs.

## Calculating the difference in days,

To calculate the difference between two dates is easy, as all you’re doing is subtracting the current date and time from when you’re counting down to.

The start date is just going to be today, right this very second. And Excel has a convenient function just for that, called NOW. It doesn’t require any arguments and all you need to do is enter the following formula:

=NOW()

Entering the date and time you’re counting down to is a bit trickier. As long as you enter it correctly, then calculating the differences will be a breeze. However, this may involve a little bit of trial and error since it’ll depend on how your regional settings are setup. For the countdown date, I’m going to set it to the end of the year. Let’s say 11:00 PM on New Year’s Eve. Here’s how I input that into my spreadsheet:

2020-12-11 11:00 PM

The key things to remember here are that there should be a space between the time and the AM/PM indicator (if you use it) and there should be two spaces between the date and the time. Then, it’s just a matter of whether you’ve got the right order of date, month, and year. This is where you may need to do some testing on your end to ensure you’ve got the correct order.

Now that the dates are set up, we can calculate the difference in days. To do this, we can just calculate the difference and use the ROUNDDOWN function to ensure we aren’t adding partial days:

There are 222 days left until the end of the year. By using the NOW function, the formula will automatically update and tomorrow the days remaining will change to 221, and so on. If your output’s looking a little different, make sure to check the formatting and that it’s set to days.

## Calculating the difference in hours, minutes, and seconds

There’s not a whole lot of complexity when it comes to calculating the difference in hours, minutes, or seconds. We’re still subtracting the current date from the deadline. The only difference is that now we’re just going to change the formatting. If I do a simple subtraction, I end up with a fraction, which isn’t really usable in its current format:

The trick here is to change the format of this cell so that it shows me hours, minutes, and seconds. And that’s an easy fix. If I just click on cell C10 and click CTRL+1, this will get me to the Format Cells menu. In here, I’ll want to select a Custom format so that the cells just shows hours, minutes ,and seconds:

Here’s what the countdown timer looks like after the format changes:

It’s important to include a date in the calculation even though we’re just doing a difference between hours, minutes, and seconds. Otherwise, the formula wouldn’t correctly calculate in all situations, such as when the deadline hour is earlier than our current hour.

## Putting it all together

Now that all the calculations are entered in, now it’s just a matter of formatting the data. We can create a countdown clock that separates days remaining, from hours, minutes, and seconds remaining.

One cell can have the difference in days, while another will have the difference in hours, minutes, and seconds. This goes back to just modifying the formatting and applying a custom format. Here’s how mine looks:

Although we’ve gotten to this point, the challenge is that this countdown timer still doesn’t update on its own. Unless you want to click on the delete button all the time, the countdown isn’t going to move unless there’s something to trigger a calculation in Excel. That’s why we’re going to need to add a macro to help us do that, which bring us to the important last step of this process:

## Adding a macro to refresh every second

We need a macro to update the file. Whether it’s every second, every five seconds, it’s up to you. While the countdown timer will update when someone enters data or does something in Excel, that’s not much of a countdown. This is where VBA can help us. If you’re not familiar with VBA, don’t worry, you can just follow the steps below and copy the code.

To get into VBA, click on ALT+F11. From the menu. Once you’re there, click on the Insert button on the menu and select Module:

Over to the right, you’ll see some blank space where you can enter in some code. Copy and paste the following there:

``````Sub RunTimer()

If Range("C10") <> 0 Then
Interval = Now + TimeValue("00:00:01")
Application.Calculate
Application.OnTime Interval, "RunTimer"

End If
End Sub``````

One thing you may to change is the reference I made to cell C10. Change that to where you have your countdown timer. As long as there’s a value in the cell, the macro will continue running. All it does is check if there’s a value there, and if there is, it updates the worksheet every second. And by doing that calculation, your countdown timer will update even if you’re not making any changes to the spreadsheet.

You can also change the interval which currently updates every second, as noted by the 00:00:01. You can change this to five seconds, 10 seconds, however often you want it to update.

But there still needs to be something that triggers the macro to start running. You can assign a button or shortcut key to do that.

However, in this example I’ll activate it when the sheet is selected. Inside VBA, you should see a list of worksheets. Double-click on the one that contains your countdown timer:

You’ll again see blank space to the right where you can enter code. And you’ll also see a couple of drop-downs near the top that you’ll want to look for. By default, the first one should say (General). Change this to Worksheet:

Next, change the other drop-down which will probably say SelectionChange. Change it to Activate. Then you should see something like this:

Copy the following code into there to call the macro we created above:

``RunTimer``

Now when you switch to another worksheet and come back to the current one you’ll notice your countdown timer is updating on its own. If you want it to stop it, just clear the cell that has the timer. Otherwise, the macro will continue running every second.

## The Countdown Timer Template

If you’d rather just use a template, then you can download one that I’ve made here. You don’t have to worry about macros and instead you just need to enter the end time; the time that you’re counting down towards.

I’ve also got a start/stop button that you can toggle to get the countdown timer going and that will pause it:

You can move the button as well as the time your counting down to onto another sheet if you don’t want someone altering it. If you have any questions or comments about this template, please send me an email at contact@howtoexcel.net

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