Distance divided by time.
Mile per Seconds to Kilometer per Seconds Converter — mi/s to km/s
Convert Mile per Seconds (mi/s) to Kilometer per Seconds (km/s) using the exact conversion factor (1 mile per seconds = 1.609344 kilometer per seconds). See the formula, worked examples, and conversion table.
Mile per Seconds to Kilometer per Seconds converter
Converter
Speed Converter
Convert road, aviation, marine, lab, and scientific speed units.
Context values
Some unit families need one extra value for a physically accurate result.
Distance divided by time.
Result = input x 1609.344 / 1000.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Mile per Seconds to Kilometer per Seconds
Mile per Seconds and Kilometer per Seconds both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Both are distance divided by time units.
Formula
kilometer per seconds = mile per seconds × 1.609344
This factor comes from each unit's defined relationship to the category's base unit: 1 mile per seconds equals 1609.344 base units, and 1 kilometer per seconds equals 1000 base units, so dividing one by the other gives the direct mile per seconds-to-kilometer per seconds factor of 1.609344.
Simple example
1 mi/s × 1.609344 = 1.609344 km/s
1 mile per seconds = 1.609344 kilometer per seconds.
Real-world example
10 mi/s × 1.609344 = 16.09344 km/s
10 mile per seconds = 16.09344 kilometer per seconds.
Conversion table
| Mile per Seconds (mi/s) | Kilometer per Seconds (km/s) |
|---|---|
| 1 mi/s | 1.609344 km/s |
| 5 mi/s | 8.04672 km/s |
| 10 mi/s | 16.09344 km/s |
| 25 mi/s | 40.2336 km/s |
| 50 mi/s | 80.4672 km/s |
| 100 mi/s | 160.9344 km/s |
Reverse conversion: Kilometer per Seconds to Mile per Seconds
1.609344 km/s × 0.6213711922 = 1 mi/s
1.609344 kilometer per seconds = 1 mile per seconds.
mile per seconds = kilometer per seconds × 0.621371192237
For a page dedicated to this direction, see Kilometer per Seconds to Mile per Seconds.
Understanding the Mile per Seconds (mi/s)
Distance divided by time.
Understanding the Kilometer per Seconds (km/s)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilometer per seconds are in 1 mile per seconds?
1 mile per seconds equals 1.609344 kilometer per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert mile per seconds to kilometer per seconds?
Multiply the mile per seconds value by 1.609344. The converter above does this instantly to whatever precision you set.
How do I convert kilometer per seconds back to mile per seconds?
Use the reverse factor: 1 kilometer per seconds equals 0.6213711922 mile per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a mile per seconds?
Mile per Seconds (mi/s) is a unit of speed.
What is a kilometer per seconds?
Kilometer per Seconds (km/s) is a unit of speed.
Is the mile per seconds to kilometer per seconds conversion exact?
Yes. Both mile per seconds and kilometer per seconds are defined by fixed standards rather than physical artifacts, so the factor of 1.609344 used above is exact to as many digits as you choose to display.