How many miles in a 500km?

500 m = 0.5 km

To convert from m to km, divide by 1000.
One kilometer (kilo=thousand) is 1,000 meters. That means that 500 meters equals 0.5 kilometers.
There are 1000 metres in one kilometre. Therefore, 500 metres is equal to 500 / 1000 = 0.5 kilometres.