Extra coarse, coarse, medium, fine and extra fine -- you know that for different coffee-brewing methods you need a different grind. But what exactly do the grinds look like? This photographic guide can help.
I Need Coffee has posted coffee grind photos using a coin as reference so you can see the difference between, say, fine and extra fine and also know which brewing methods match. Not all grind levels have photos, but you can guestimate based on the surrounding ones.
For example, the photos above are for medium (on the left, best for drip brewing) and fine (on the right, for espresso and Aeropress) grinds. Medium-fine would be something in between.
It's a handy reference guide if you're switching up the kind of coffee you're making.
Coffee Grind Chart [I Need Coffee]