31 km = 19.26 miles (rounded)
roughly 31 mph. the formula is (KM * 0.62)
5 kph = 3.11 mph
87 kph = 54.06 mph.
265 mph = 426.5 kph
272 kph is 169 mph.
12 kph = about 7.5 mph.
136.7 mph is 220 kph.
27.3 mph = 43.94 kph
500 kph = ~310.7 mph
100 kph = 62.1 mph
220 Kph
199.56 kph.