Creating a Timesheet in Excelの注目されている理由を専門的かつ分かりやすくまとめました。最新トレンドを一目で把握できます。

Here’s the weird part: Excel treats time like a decimal. 9:00 AM is actually 0.375 in Excel’s brain. Freaky, right?

That means if you type “8:30” into a cell, Excel thinks, “Ah yes, 0.3541666667.” It’s like your computer is speaking a secret time-language. You don’t need to understand it—just let it work its magic.

Fun Fact: The 24-Hour Trap

If you try to add up 25 hours of work, Excel might panic. It will wrap around to 1:00 AM like a confused alarm clock. That’s why you need to format your totals as [h]:mm.

That little bracket is the difference between a hero and a zero. It tells Excel, “Hey, let those hours run wild—no midnight ceiling!” I call it the “overtime override.”