The kilometer (km) equals 1,000 meters and is the standard unit for measuring long distances between cities, countries, and geographic features. Road signs in most countries display distances in kilometers, and running races commonly use kilometer markers. One kilometer is equivalent to about 0.6214 miles, making it easy to convert between metric and imperial distance scales.

The foot (ft) is an imperial unit equal to 12 inches or 0.3048 meters, deeply embedded in American construction, aviation altitudes, and everyday measurement. In real estate, room dimensions and property lot sizes are almost always stated in feet across the United States. One foot equals exactly 30.48 centimeters.