km to Miles

Common values

From (km)To (mi)
00.000
0.20.124
0.40.249
0.60.373
0.80.497
10.621
1.20.746
1.40.870
1.60.994
1.81.118
21.243

One kilometre equals 0.621371 miles:

miles = km × 0.621371

  • 100 km × 0.621 = 62.1 miles
  • 500 km × 0.621 = 310.7 miles
  • 1 km = 0.621 miles

All Australian road signs and speed limits use kilometres. Converting to miles is needed when hiring a car in the US or UK, using American navigation apps, or reading travel books about destinations where miles are used. Australia's vast distances make this a practical conversion — Sydney to Melbourne is 877 km (545 miles).

Australia drives on the left and uses km/h for all speed limits. The maximum speed on Australian highways is typically 110 km/h (68.4 mph). Fun fact: Australia's Nullarbor Plain includes the world's longest straight road — 146.6 km (91.1 miles) without a bend.

Frequently asked questions

  • What is 100 km/h in mph? 100 × 0.621 = 62.1 mph.
  • How far is Sydney to Melbourne in miles? 877 km = 545 miles.

Related converters: Unit Converter