Speed Converter
km/h, mph, knots and m/s.
Conversion
Knots to Feet per Second Converter
1 knot = 1.687809857 ft/s. Enter any value to convert knots (kn) to feet per second (ft/s), or use the table below for common values.
Formula
ft/s = kn × 1.687809857
Example: 10 kn = 16.87809857 ft/s. To convert the other way, use kn = ft/s × 0.5924838013.
Quick mental estimate: multiply by about 1.7.
Knots to Feet per Second conversion table
| Knots (kn) | Feet per Second (ft/s) |
|---|---|
| 1 kn | 1.687809857 ft/s |
| 5 kn | 8.439049286 ft/s |
| 10 kn | 16.87809857 ft/s |
| 20 kn | 33.75619714 ft/s |
| 30 kn | 50.63429571 ft/s |
| 40 kn | 67.51239428 ft/s |
| 50 kn | 84.39049286 ft/s |
| 60 kn | 101.2685914 ft/s |
| 70 kn | 118.14669 ft/s |
| 80 kn | 135.0247886 ft/s |
| 90 kn | 151.9028871 ft/s |
| 100 kn | 168.7809857 ft/s |
| 120 kn | 202.5371829 ft/s |
| 150 kn | 253.1714786 ft/s |
| 200 kn | 337.5619714 ft/s |
| 300 kn | 506.3429571 ft/s |
About knots and feet per second
The knot is one nautical mile per hour (exactly 1.852 km/h), used in aviation, sailing and marine weather forecasts.
The foot per second is used in US engineering, ballistics and fluid flow.
Other Speed conversions
Frequently asked questions
How do I convert knots to feet per second?
Use the formula ft/s = kn × 1.687809857. For example, 10 kn = 16.87809857 ft/s.
What is 1 knot in feet per second?
1 kn = 1.687809857 ft/s.
How do I convert feet per second back to knots?
Use kn = ft/s × 0.5924838013. 1 ft/s = 0.5924838013 kn.