If you want to know how many miles are 20 km?, then it is 31.068 miles (approximately). 

Now, the steps to find it out are-

1. Multiply the given quantity in kilometres by 0.621371192 which is called the conversion factor.


2. Here to find the value of 20 km in miles, you just have to multiply 20 by the conversion factor and the formula will become-


3. Miles = 20 * 0.621371192 = 12.4274238447.

And so the value that we get on converting 20 km is 12.4274 miles (approximately).