Thirty feet shows up everywhere. It's a flagpole, a pool, a boat slip, a fence run. Yet most…

Need to know how tall 22 inches really is? Maybe you’re buying a shelf, checking a carry-on bag,…

Forty feet is hard to picture. It's too big to hold in your head the way you can…

Twenty-three inches is a tricky length to picture. It isn't a tidy number like 2 feet, and it…

21 inches is 1.75 feet, or 1 foot 9 inches. In metric, it is 53.34 centimeters. That’s a…

20 inches is 1 foot 8 inches, or 50.8 centimeters. That is a little more than half a…

Fifty-nine inches equals 4 feet 11 inches, or 149.86 centimeters. That puts it exactly one inch short of…

How far is 100 feet? It is exactly 30.48 meters, or about one third of a football field.…

One kilometer (1 km) is a metric unit of length equal to 1,000 meters, or about 0.62 miles.…

How big is 2 cm? = 0.79 inches. That is 20 millimeters, or just over three-quarters of an…