There are 1000 mm in 1 m (milli- stands for 1/1000) and there are 1000 m in 1 km (kilo- stands for 1000). So 1000 x 1000 = 1 million, so there are 5.2 million mm in 5.2 km.
1 mm= 1/1000 km
10000 mm = 0.01 km
0.25 km = 250,000 mm
To convert from mm to km, divide by a million.
25.6 kilometers (mm / 1,000,000 = km)
4.3 mm is equal to 0.0000043 km
8490 mm = 0.00849 km
52 millimeters = 5.2 centimeters
52 km = 52 000 mTo convert from km to m, multiply by 1000.
1,000,000 mm = 1 km
1 km equals 100,000 mm
1000 mm = 1 m = 0.001 km