Miles to Kilometers Converter

By Inch To Cm Converter Editorial Team·August 31, 2026·1 min read

One mile is 1.609344 kilometres. That awkward number is why people reach for shortcuts: multiply miles by 1.6, or – more accurately – add half again plus a bit. Going the other way, kilometres × 0.621 gives miles. This page has the tables and the two mental tricks worth knowing.

The mental math that holds up

The cleanest trick uses the Fibonacci-style coincidence that consecutive numbers in the sequence 3, 5, 8, 13, 21 are roughly a mile-to-km pair: 5 miles ≈ 8 km, 8 miles ≈ 13 km, 13 miles ≈ 21 km. It is accurate to about 0.5%. For odd values, “miles × 1.6” is close enough for driving, and “km × 0.6” gets you back. A 60 mph limit is 96.6 km/h; 30 mph is 48 km/h.

Running and driving distances

Miles	Kilometres	What it is
3.1 mi	5 km	a 5K race
6.2 mi	10 km	a 10K race
13.1 mi	21.1 km	a half marathon
26.2 mi	42.2 km	a marathon
60 mi	96.6 km	a US freeway hour

Miles, nautical miles and speed

The mile here is the statute mile used on roads. A nautical mile is different – 1.852 km – and only turns up in aviation and at sea. If you are converting a pace or a speed rather than a distance, the speed converter handles mph, km/h, knots and m/s together. For shorter distances, drop to the feet to metres or length converter.