There are 1.609344 kilometres to a mile and 0.621371192 miles to a kilometre. Consequently, there are two ways to convert 50 kilometres to miles. Either divide 50 by 1.609344 or increase it by 0.621371192. The calculation is as follows: multiplie 50 kilometres by 0.621371192 to obtain the answer. There is always a denominator of 1 in decimal numbers. Making 50 km to miles as a decimal" the numerator and "1" the denominator, we may convert 50 kilometres to miles as a fraction by simplifying it. The simplest form is 31.069 miles.