Miles/second to kilometers/second (mi/s to km/s) converter

You can enter a value in either the miles/second (mi/s) or kilometers/second (km/s) input fields. For an understanding of the conversion process, we include algebraic formulas.

See conversions to common Speed units and easily switch Speed units in the two tabbed section below. Use the search bar above to find additional conversions.

Tip: Click the "Swap" button to switch from converting miles/second to kilometers/second to kilometers/second to miles/second.

miles/second (mi/s)

 

kilometers/second (km/s)

 
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1 mi/s = 1.609344 km/s 1 km/s = 0.62137119 mi/s

Algebraic Steps / Dimensional Analysis Formula
mi/s * 5280 ft/s
1 mi/s		 * 1 m/s
3.2808 ft/s		 * 1 km/s
1000 m/s		 = km/s

Direct Conversion Formula
mi/s * 1.609344 km/s
1 mi/s		 = km/s

If you would like to switch between Speed units, select from the tables below

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