Miles to km Converter
Convert miles to kilometers, meters and feet instantly.
How to use this miles to km
- 1Enter your distance in miles.
- 2The converter shows kilometers, meters, and feet instantly.
- 3For US runners converting training distances and race results to metric, enter the mile distance to see its kilometer equivalent.
- 4For international travel, enter speed limit values in miles to understand them in km/h terms.
- 5For comparing US vs international vehicle range specifications, convert mile ranges to kilometers.
- 6Quick approximation: multiply miles by 1.6 for a close km estimate (true factor 1.60934, within 0.6%).
How it's calculated
km = miles × 1.60934. 1 mile = 1.60934 km.
About the Miles to km
Miles remain the primary unit of road distance in the United States and for UK roads, despite the UK having officially adopted the metric system for most other measurements. This persistence means millions of travelers, athletes, and professionals regularly need to convert miles to kilometers — particularly when crossing borders, comparing international specifications, or using metric fitness tracking devices.
The conversion factor, 1 mile = 1.60934 kilometers, derives from the international standard mile (1,609.344 meters exactly). The older US survey mile differs very slightly but is used only for land surveying — for all practical everyday purposes, 1 mile = 1.60934 km. The ×1.6 approximation is within 0.6% of the exact answer and is the mental shortcut most commonly used by travelers and runners.
Running in the US is typically measured in miles — race distances are described in miles (5 miles, 10 miles), training plans reference miles per week, and pace is expressed as minutes per mile. The international running world uses kilometers, so converting between the two is a constant need for runners who follow international training resources, enter international races, or track workouts with GPS watches that record in both systems. A 7-minute mile pace = 4.35 minutes per kilometer; a 5-minute per km pace = 8.047 minutes per mile.
Speed limits in the US and UK are in mph. When driving internationally, or when comparing speed limits between countries, converting miles to km provides context. A 70 mph UK motorway speed limit = 112.65 km/h. A 65 mph US freeway limit = 104.61 km/h. A school zone at 25 mph = 40.23 km/h — nearly exactly 40 km/h, which is the speed of most European school zones.
Electric vehicle range is increasingly expressed in both miles (for US market) and km (for international market). A 300-mile EV range = 482.8 km. Comparing EVs across markets requires this conversion to evaluate whether a vehicle meets your practical range needs. The same dynamic applies to fuel tank sizes, fuel efficiency ratings, and any distance-based specification that appears in different unit systems across global automotive markets.
Frequently asked questions
How many km is a marathon (26.2 miles)?
26.2 miles × 1.60934 = 42.195 km — the official marathon distance, standardized since the 1908 London Olympics.
How many km is 1 mile?
1 mile = exactly 1.60934 km = 1,609.344 meters. The international mile was standardized to this value in 1959.
How many miles is a half-marathon in km?
A half-marathon is 13.1094 miles = 21.0975 km. These are the official distances used in all World Athletics-sanctioned events.
How many miles is 60 mph in km/h?
This is a speed question, not a distance question — 60 miles per hour = 96.56 km/h. For distance: 60 miles = 96.56 km.
What are common US road distance reference points in km?
1 mile = 1.61 km; 10 miles = 16.09 km; 26.2 miles (marathon) = 42.2 km; 100 miles = 160.93 km. US interstate highway mile markers make it easy to track distance in miles; in metric countries, kilometer posts serve the same purpose.