Distance divided by time.
Nautical mile per Hours to Kilometer per Seconds Converter — nmi/h to km/s
Convert Nautical mile per Hours (nmi/h) to Kilometer per Seconds (km/s) using the exact conversion factor (1 nautical mile per hours = 0.0005144444 kilometer per seconds). See the formula, worked examples, and conversion table.
Nautical mile per Hours 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 0.5144444444 / 1000.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nautical mile per Hours to Kilometer per Seconds
Nautical mile per Hours 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 = nautical mile per hours × 0.000514444444444
This factor comes from each unit's defined relationship to the category's base unit: 1 nautical mile per hours equals 0.514444444444 base units, and 1 kilometer per seconds equals 1000 base units, so dividing one by the other gives the direct nautical mile per hours-to-kilometer per seconds factor of 0.000514444444444.
Simple example
1 nmi/h × 0.0005144444444 = 0.0005144444 km/s
1 nautical mile per hours = 0.0005144444 kilometer per seconds.
Real-world example
10 nmi/h × 0.0005144444444 = 0.0051444444 km/s
10 nautical mile per hours = 0.0051444444 kilometer per seconds.
Conversion table
| Nautical mile per Hours (nmi/h) | Kilometer per Seconds (km/s) |
|---|---|
| 1 nmi/h | 0.0005144444 km/s |
| 5 nmi/h | 0.0025722222 km/s |
| 10 nmi/h | 0.0051444444 km/s |
| 25 nmi/h | 0.0128611111 km/s |
| 50 nmi/h | 0.0257222222 km/s |
| 100 nmi/h | 0.0514444444 km/s |
Reverse conversion: Kilometer per Seconds to Nautical mile per Hours
0.0005144444 km/s × 1943.844492 = 0.9999999136 nmi/h
0.0005144444 kilometer per seconds = 0.9999999136 nautical mile per hours.
nautical mile per hours = kilometer per seconds × 1943.84449244
For a page dedicated to this direction, see Kilometer per Seconds to Nautical mile per Hours.
Understanding the Nautical mile per Hours (nmi/h)
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 nautical mile per hours?
1 nautical mile per hours equals 0.0005144444 kilometer per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert nautical mile per hours to kilometer per seconds?
Multiply the nautical mile per hours value by 0.0005144444444. The converter above does this instantly to whatever precision you set.
How do I convert kilometer per seconds back to nautical mile per hours?
Use the reverse factor: 1 kilometer per seconds equals 1,943.844492 nautical mile per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a nautical mile per hours?
Nautical mile per Hours (nmi/h) is a unit of speed.
What is a kilometer per seconds?
Kilometer per Seconds (km/s) is a unit of speed.
Is the nautical mile per hours to kilometer per seconds conversion exact?
Yes. Both nautical mile per hours and kilometer per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.0005144444444 used above is exact to as many digits as you choose to display.