Distance divided by time.
Nautical mile per Days to Kilometer per Seconds Converter — nmi/d to km/s
Convert Nautical mile per Days (nmi/d) to Kilometer per Seconds (km/s) using the exact conversion factor (1 nautical mile per days = 0.0000214352 kilometer per seconds). See the formula, worked examples, and conversion table.
Nautical mile per Days 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 0.02143518519 / 1000.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nautical mile per Days to Kilometer per Seconds
Nautical mile per Days 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 days × 0.0000214351851852
This factor comes from each unit's defined relationship to the category's base unit: 1 nautical mile per days equals 0.0214351851852 base units, and 1 kilometer per seconds equals 1000 base units, so dividing one by the other gives the direct nautical mile per days-to-kilometer per seconds factor of 0.0000214351851852.
Simple example
1 nmi/d × 0.00002143518519 = 0.0000214352 km/s
1 nautical mile per days = 0.0000214352 kilometer per seconds.
Real-world example
10 nmi/d × 0.00002143518519 = 0.0002143519 km/s
10 nautical mile per days = 0.0002143519 kilometer per seconds.
Conversion table
| Nautical mile per Days (nmi/d) | Kilometer per Seconds (km/s) |
|---|---|
| 1 nmi/d | 0.0000214352 km/s |
| 5 nmi/d | 0.0001071759 km/s |
| 10 nmi/d | 0.0002143519 km/s |
| 25 nmi/d | 0.0005358796 km/s |
| 50 nmi/d | 0.0010717593 km/s |
| 100 nmi/d | 0.0021435185 km/s |
Reverse conversion: Kilometer per Seconds to Nautical mile per Days
0.0000214352 km/s × 46652.26782 = 1.000000691 nmi/d
0.0000214352 kilometer per seconds = 1.000000691 nautical mile per days.
nautical mile per days = kilometer per seconds × 46652.2678186
For a page dedicated to this direction, see Kilometer per Seconds to Nautical mile per Days.
Understanding the Nautical mile per Days (nmi/d)
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 days?
1 nautical mile per days equals 0.0000214352 kilometer per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert nautical mile per days to kilometer per seconds?
Multiply the nautical mile per days value by 0.00002143518519. The converter above does this instantly to whatever precision you set.
How do I convert kilometer per seconds back to nautical mile per days?
Use the reverse factor: 1 kilometer per seconds equals 46,652.26782 nautical mile per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a nautical mile per days?
Nautical mile per Days (nmi/d) 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 days to kilometer per seconds conversion exact?
Yes. Both nautical mile per days and kilometer per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.00002143518519 used above is exact to as many digits as you choose to display.