KM to Miles — Convert Kilometers to Miles

Traveling to Europe or buying a car with a km dashboard? You need km to miles. Kilometers and miles are the two most common units for measuring distance in the world.

In the USA we use miles, but the rest of the world uses kilometers.

Our free calculator below converts instantly.

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KM to Miles Converter

Convert kilometers (km) to miles (mi), or miles to km, instantly. 1 km = 0.621371 miles.

Amount

KM → Miles Miles → KM

⇅

Result

0.6214 mi

1 km × 0.621371 = 0.6214 mi

Common conversions

1 km 5 km 10 km Marathon 42 km 100 km 160 km

This guide gives you the formula, the shortcuts, and the charts—everything you need to convert kilometers to miles accurately and quickly.

What is a Kilometer (KM)?

If you’re traveling to the United States, following an American workout plan, or reading a road sign in the UK, you’ll constantly need to convert KM to miles.

A kilometer (km) is a metric unit used to measure distance. It’s used in most countries for road distances, speed limits, and athletic events. Used on road signs in Europe, Canada, and Mexico.

1 kilometer = 1,000 meters

1 kilometer ≈ 0.621371 miles

What is a Mile?

A mile (symbol: mi) is a unit of length in the imperial and US customary systems. The mile is the official unit of road distance in a small number of countries, including the United States, the United Kingdom, Liberia, and Myanmar.

Miles are frequently used to describe driving distances, road distances, and travel distances; running and walking distances; and speed limits and vehicle speeds.

• 1 mile = 5,280 feet
• 1 mile = 1,760 yards
• 1 mile = 1.609344 kilometers
• 1 km = 0.621371 miles

1 mile is longer than 1 km.

KM to Miles Formula

Here’s the number you need to remember:

1 kilometer = 0.621371 miles

To convert kilometers to miles, multiply the kilometers by 0.621371.

The formula is simple:

Example:

• Let’s convert 10 kilometers to miles:
  • 10 km × 0.621371 = 6.2137 miles
  • Therefore: 10 km = 6.21 miles
  • That’s a 10K race, very popular in the USA.

• Let’s convert 20 kilometers to miles:
  • 20 × 0.621371 = 12.42742 miles
  • Therefore: 20 km = 12.43 miles

• Let’s convert 50 kilometers to miles:
  • 50 × 0.621371 = 31.0686 miles
  • Therefore: 50 km = 31.07 miles

• Let’s convert 160 kilometers to miles:
  • 160 × 0.621371 = 99.4194 miles
  • Therefore: 160 km = 99.42 miles
  • Almost 100 miles, a long road trip.

The Reverse Formula (Miles to KM)

If you need to go the other way:

1 mile = 1.609344 kilometers

KM to Miles Conversion Table

Here are some commonly searched kilometer-to-mile conversions:

Kilometers	Miles (mi)
1 km	0.62 mi
2 km	1.24 mi
3 km	1.86 mi
4 km	2.49 mi
5 km	3.11 mi
6 km	3.73 mi
7 km	4.35 mi
8 km	4.97 mi
9 km	5.59 mi
10 km	6.21 mi
15 km	9.32 mi
20 km	12.43 mi
25 km	15.53 mi
30 km	18.64 mi
40 km	24.85 mi
50 km	31.07 mi
60 km	37.28 mi
70 km	43.50 mi
80 km	49.71 mi
90 km	55.92 mi
100 km	62.14 mi

KM to Miles for Runners and Fitness Enthusiasts

Runners frequently switch between miles and kilometers, especially when training for international races. Here are the conversions that matter most:

Kilometers	Miles	Race
5 km	3.11 miles	5K
10 km	6.21 miles	10K
15 km	9.32 miles	15K
20 km	12.43 miles	20K
21.1 km	13.11 miles	Half marathon
42.2 km	26.22 miles	Marathon

KM to Miles for Travelers

Kilometers	Miles	Flight Context
1,000 km	621.37 miles	Short domestic flight
2,000 km	1,242.74 miles	Regional flight
5,000 km	3,106.86 miles	Transatlantic
8,000 km	4,970.97 miles	Long-haul international
10,000 km	6,213.71 miles	Ultra-long-haul

Why Do Americans Need to Convert KM to Miles?

Converting kilometers to miles can be useful for Americans who:

• Travel to other countries
• Read international travel information
• Follow international running or cycling events
• Use fitness apps that display kilometers
• Compare distances from different countries
• Read metric-based maps or GPS information
• Compare international race distances

Real-Life USA Examples

Here are some real-life examples:

1. Running: You signed up for a 10 km race in New York? That’s 6.21 miles.
2. Driving in Europe: Your rental car shows a 120 km/h speed limit. That’s 74.56 mph—don’t overspeed in the USA, thinking.
3. Cycling: 50 km bike ride = 31 miles.

Frequently Asked Questions