Length Converter
Unit conversionHow long is that in other units?
Convert between metric and imperial lengths, exactly.
What you enter stays on your device while you use this tool. Opening a shared link sends the settings in its address to HowToolbox to prepare the page.
Result
1.609344 km
1 mile equals 1.609344 kilometres
- The other way round: 1 km ≈ 0.6214 mi.
- Exact by definition: 1 km = 1,000 m.
Length
In all units
- Millimetres
- 1,609,344 mm
- Centimetres
- 160,934.4 cm
- Metres
- 1,609.344 m
- Kilometres
- 1.609344 km
- Inches
- 63,360 in
- Feet
- 5,280 ft
- Yards
- 1,760 yd
- Miles
- 1 mi
- Nautical miles
- 0.869 nmi
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Convert between metric and imperial lengths, exactly.
How to use
- Type the value you want to convert.
- Choose the units to convert from and to. Use the swap button to flip them.
Heights in centimetres
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How it works
Every unit is converted through metres using exact definitions: 1 inch is exactly 2.54 cm, 1 foot is 0.3048 m, 1 mile is 1,609.344 m and 1 nautical mile is 1,852 m.
These definitions come from the International Yard and Pound Agreement of 1959 and the international definition of the nautical mile.
Frequently asked questions
Why is an inch exactly 2.54 cm?
Since 1959 the inch has been defined as exactly 25.4 millimetres by international agreement, so conversions between metric and imperial lengths are exact.
What is the difference between a mile and a nautical mile?
A statute mile is 1,609.344 m. A nautical mile, used at sea and in aviation, is 1,852 m — about 1.15 statute miles.
Is the US survey foot supported?
No. The US survey foot was retired at the end of 2022; the international foot (0.3048 m) is used.
How do I convert feet and inches to centimetres?
Turn the height into inches first, then multiply by 2.54: 5 ft 10 in is 5 × 12 + 10 = 70 in, and 70 × 2.54 = 177.8 cm.
How many miles is a kilometre?
About 0.621 miles. A 10 km run is 6.2 miles, and a marathon (42.195 km) is 26.2 miles.
How many feet are in a metre?
3.28084 feet, or 3 ft 3.37 in.
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