Just realized I have no idea what 4 inches actually looks like in real life. Like, people always say things are 4 inches but I can't visualize it at all without measuring. Turns out what is four inches is basically your palm width or the length of your TV remote's button area. Super random but helpful.

Did some quick math and 4 inches is 10.16 centimeters, which honestly still doesn't help my brain picture it lol. But comparing it to everyday stuff actually works? Like a credit card is 3.4 inches so 4 inches is just a tiny bit longer. Or if you have a dollar bill handy, 4 inches is a little over half of that (bills are 6.14 inches).

Now I'm seeing 4 inches everywhere - soap bars, phone widths, the edge of a notebook. It's wild how you don't notice measurements until you start paying attention. Most people probably think it sounds bigger than it actually is when you just hear the number. But yeah, what is four inches? Pretty much a small to medium everyday length that's way more common than I thought.