4 kilometeres 2.49 miles
4000 km = 2485.5 miles
6,437.376
4,000 meters per hour equates to 2.5 miles per hour.
21,120,000 feet.
4000 sq. miles
there are 157,480.31 inches in 4000 metres.
no 1 mile = 1609.344 meter 1 meter = 0.00062 mi
I'm thinking that's not what you wanted to ask but as written, the answer is 4000.
4000 mm 1 meter = 1000 millimeters 1 millimeter = 0.001 meter
4000 m 1 meter = 100 centimeters 1 centimeter = 0.01 meter
That depends a lot on what you want to build.