There are 250,000 mm in 0.25 km.
1 mm= 1/1000 km
10000 mm = 0.01 km
To convert from mm to km, divide by a million.
25.6 kilometers (mm / 1,000,000 = km)
8490 mm = 0.00849 km
There are 6,000,000 mm in 6 km.
1,000,000 mm = 1 km
1000 mm = 1 m = 0.001 km
6,000,000 mm
0.147km = 147,000 mm
0.000464 km