knot to kilometer per second
Convert knot (kn) to kilometer per second (km/s). Use an editable speed converter, conversion formula, and reference table.
1 kn = 0.0005144444444 km/s
Conversion formula
One knot equals 0.0005144444444 kilometer per second. Multiply your value in knot by this factor to get kilometer per second. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 knot:5 × 0.0005144444444 = 0.002572222222 km/s
Conversion table
| knot (kn) | kilometer per second (km/s) |
|---|---|
| 0.01 | 0.000005144444444 |
| 0.1 | 0.00005144444444 |
| 1 | 0.0005144444444 |
| 2 | 0.001028888889 |
| 5 | 0.002572222222 |
| 10 | 0.005144444444 |
| 25 | 0.01286111111 |
| 50 | 0.02572222222 |
| 100 | 0.05144444444 |
| 1000 | 0.5144444444 |
About these measurements
Speed is distance traveled per unit of time.
The base reference used here is the meter per second. One knot is 0.5144444444 base units; one kilometer per second is 1,000 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 kn to km/s?
Multiply the quantity in kn by 0.0005144444444. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the kilometer per second to knot 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.
