How do I do a time formula in Excel?

Okay, so, Excel time formulas. Ugh, right? I've been there. Seriously, I've spent way too long staring at a spreadsheet wondering why my times were all wonky. The thing is, the =TIME(hour, minute, second) function is the way to go. But – and this is a big but – make sure your hour, minute, and second are in their own little cells. Like, if your hour is in B5, your minute in C5, and your second in D5, then your formula would be =TIME(B5,C5,D5). Makes sense, right?

But what if you get that dreaded #NUM! error? Yeah, I've seen that one too. It usually means you've somehow ended up with a negative time. Maybe you subtracted a later time from an earlier one without realizing it. I did that once when I was trying to calculate how long I spent on a project. Ended up with negative three hours! Like, what? How can you spend negative time? So yeah, double-check your data. Make sure everything's positive and in the right order.

It can be a real pain, I know. But honestly, once you figure it out, it is pretty handy. I use it all the time now for tracking my work hours, even figuring out the best time to bake cookies (don't judge!). Stick with it, it's worth it!