Kilometer Calculator — Convert km to Miles, Metres, Feet & More
Convert kilometres (km) to miles, metres, centimetres, feet, yards, inches, nautical miles and light-years — or enter any of those units to convert back to kilometres in one step.
From unit
1 km = 1000 m = 0.621371 mi = 3280.84 ft = 0.539957 nmi
- 1
Kilometres per unit
1 km = 1 ÷ 1 = 1 - 2
Distance in kilometres
1 ÷ 1 = 1
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1 km = 1000 m = 100,000 cm = 0.621371 mi = 3280.84 ft = 1093.61 yd = 0.539957 nmi. Select your source unit, enter the distance, and all conversions appear instantly. The conversion anchor is the metre (1 km = 1000 m exactly).
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How this is calculated
The kilometre is the SI unit of distance most commonly used for everyday geographic distances. All conversions pass through a single intermediate value in kilometres: the input is first divided by the source unit's "per-km" factor, then multiplied by the target unit's factor. This two-step approach avoids accumulating rounding error through long conversion chains.
The exact definition anchor is the metre (1 m = exactly 1/1000 km by SI definition). Imperial units derive from the 1959 International Yard and Pound Agreement: 1 yard = 0.9144 m exactly, giving 1 mile = 1760 yards = 1.609344 km exactly, and 1 foot = 1/3 yard = 0.3048 m exactly. The nautical mile (1 nmi = 1.852 km exactly) is defined by the International Hydrographic Organization and equals 1 arcminute of latitude at the equator.
The light-year (≈ 9.461 × 10¹² km) is included for scientific curiosity — it is the distance light travels in one Julian year (365.25 days) at exactly 299,792.458 km/s. For submillimetre precision in engineering, use the metre and millimetre columns directly.
Ceisteanna coitianta
1 kilometre is exactly 0.621371192 miles (or approximately 0.6214 miles). Conversely, 1 mile = 1.609344 km exactly. A quick mental shortcut: multiply kilometres by 0.6 to get a rough mile estimate.
1 kilometre equals 3,280.84 feet (3,280 feet and approximately 10 inches). This follows from 1 km = 1000 m and 1 m = 3.280839895 ft.
A nautical mile (1.852 km exactly) is about 15% longer than a kilometre and is used in aviation and maritime navigation because 1 nmi equals 1 arcminute of latitude. Speed in nautical miles per hour is called a knot (1 knot = 1.852 km/h).
Ar a dtugtar freisin
TG we-Calculate Editorial Team. (2026). Kilometer Calculator — Convert km to Miles, Metres, Feet & More [Online calculator]. TG we-Calculate. https://we-calculate.com/ga/calculator/kilometer-calculator
TG we-Calculate Editorial Team. "Kilometer Calculator — Convert km to Miles, Metres, Feet & More." TG we-Calculate. 2026. https://we-calculate.com/ga/calculator/kilometer-calculator.
TG we-Calculate Editorial Team, "Kilometer Calculator — Convert km to Miles, Metres, Feet & More," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/ga/calculator/kilometer-calculator
@misc{wecalculate_kilometer_calculator, title = {Kilometer Calculator — Convert km to Miles, Metres, Feet & More}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/ga/calculator/kilometer-calculator}}, year = {2026}, note = {TG we-Calculate} }
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