1 000 000mm=1km
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1 km equals 100,000 mm
1m = 1/1000 km 0.03 m = 0.03/1000 =0.00003 km
There are 1,000,000 (one million) mm in a km. Well you see, there are 100 metres in a kilometre. There are 100 centimetres in a metre. There are 10 millimetres in a centimetre. So, 100 times 100 times 10 equals how many mm in a km. That is 1,000,000 mm in a km!
0.000001km = 1mm
1 km is bigger than 1 mm because 1 km is equivalent to 1,000,000 mm.