kilometer per hour to nautical mile per second
Convert kilometer per hour (km/h) to nautical mile per second (nmi/s). Use an editable speed converter, conversion formula, and reference table.
1 km/h = 0.000149988001 nmi/s
Conversion formula
One kilometer per hour equals 0.000149988001 nautical mile per second. Multiply your value in kilometer per hour by this factor to get nautical mile per second. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 kilometer per hour:5 × 0.000149988001 = 0.0007499400048 nmi/s
Conversion table
| kilometer per hour (km/h) | nautical mile per second (nmi/s) |
|---|---|
| 0.01 | 0.00000149988001 |
| 0.1 | 0.0000149988001 |
| 1 | 0.000149988001 |
| 2 | 0.0002999760019 |
| 5 | 0.0007499400048 |
| 10 | 0.00149988001 |
| 25 | 0.003749700024 |
| 50 | 0.007499400048 |
| 100 | 0.0149988001 |
| 1000 | 0.149988001 |
About these measurements
Speed is distance traveled per unit of time.
The base reference used here is the meter per second. One kilometer per hour is 0.2777777778 base units; one nautical mile per second is 1,852 base units.
Important distinctions
Mach is excluded because the speed of sound depends on medium and temperature.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert km/h to nmi/s?
Multiply the quantity in km/h by 0.000149988001. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the nautical mile per second to kilometer per hour converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
