Knots to Feet per Second (kn → ft/s)
Formula
1 kn = 1.6878083989501311 ft/sConversion Table
| kn | ft/s |
|---|---|
| 0 | 0 |
| 1.0000 | 1.6878 |
| 2.0000 | 3.3756 |
| 3.0000 | 5.0634 |
| 4.0000 | 6.7512 |
| 5.0000 | 8.4390 |
| 6.0000 | 10.127 |
| 7.0000 | 11.815 |
| 8.0000 | 13.502 |
| 9.0000 | 15.190 |
| 10.000 | 16.878 |
| 11.000 | 18.566 |
| 12.000 | 20.254 |
| 13.000 | 21.942 |
| 14.000 | 23.629 |
| 15.000 | 25.317 |
| 16.000 | 27.005 |
| 17.000 | 28.693 |
| 18.000 | 30.381 |
| 19.000 | 32.068 |
| kn | ft/s |
|---|---|
| 20.000 | 33.756 |
| 21.000 | 35.444 |
| 22.000 | 37.132 |
| 23.000 | 38.820 |
| 24.000 | 40.507 |
| 25.000 | 42.195 |
| 26.000 | 43.883 |
| 27.000 | 45.571 |
| 28.000 | 47.259 |
| 29.000 | 48.946 |
| 30.000 | 50.634 |
| 31.000 | 52.322 |
| 32.000 | 54.010 |
| 33.000 | 55.698 |
| 34.000 | 57.385 |
| 35.000 | 59.073 |
| 36.000 | 60.761 |
| 37.000 | 62.449 |
| 38.000 | 64.137 |
| 39.000 | 65.825 |
| kn | ft/s |
|---|---|
| 40.000 | 67.512 |
| 41.000 | 69.200 |
| 42.000 | 70.888 |
| 43.000 | 72.576 |
| 44.000 | 74.264 |
| 45.000 | 75.951 |
| 46.000 | 77.639 |
| 47.000 | 79.327 |
| 48.000 | 81.015 |
| 49.000 | 82.703 |
| 50.000 | 84.390 |
| 51.000 | 86.078 |
| 52.000 | 87.766 |
| 53.000 | 89.454 |
| 54.000 | 91.142 |
| 55.000 | 92.829 |
| 56.000 | 94.517 |
| 57.000 | 96.205 |
| 58.000 | 97.893 |
| 59.000 | 99.581 |
| kn | ft/s |
|---|---|
| 60.000 | 101.27 |
| 61.000 | 102.96 |
| 62.000 | 104.64 |
| 63.000 | 106.33 |
| 64.000 | 108.02 |
| 65.000 | 109.71 |
| 66.000 | 111.40 |
| 67.000 | 113.08 |
| 68.000 | 114.77 |
| 69.000 | 116.46 |
| 70.000 | 118.15 |
| 71.000 | 119.83 |
| 72.000 | 121.52 |
| 73.000 | 123.21 |
| 74.000 | 124.90 |
| 75.000 | 126.59 |
| 76.000 | 128.27 |
| 77.000 | 129.96 |
| 78.000 | 131.65 |
| 79.000 | 133.34 |
Knots to Feet per Second Conversion
Converting Knots (kn) to Feet per Second (ft/s) is a common speed conversion. 1 kn equals 1.687808 ft/s. For example, 100 kn is equal to 168.78084 ft/s.
Quick Mental Math: Knots to Feet per Second
Multiply by 1.69 to convert.
Why is converting Knots to Feet per Second tricky?
Nautical knots are only used in maritime and aviation; unfamiliar to land-based users.
Quick Reference Values
1 kn = 1.687808 ft/s. 5 kn = 8.439042 ft/s. 10 kn = 16.878084 ft/s. 25 kn = 42.19521 ft/s. 50 kn = 84.39042 ft/s. 100 kn = 168.78084 ft/s.
What is Knots?
Knots (kn) is a unit of speed. A knot is a unit of speed equal to one nautical mile per hour. It precisely corresponds to 1.852 kilometers per hour or 0.51444 meters per second. The knot is internationally recognized for maritime and aviation speed measurements and is defined using the international nautical mile of exactly 1852 meters [nist-si-guide]. The knot originated from the practice of measuring speed at sea using a 'log line' with knots tied at regular intervals. The term and unit were standardized with the adoption of the international nautical mile in 1929 by the International Hydrographic Organization [nist-si-guide]. Knots are the standard speed unit in global maritime navigation and aviation. Countries and organizations like the International Maritime Organization (IMO) and International Civil Aviation Organization (ICAO) mandate its use for vessel and aircraft speed reporting [nist-si-guide].
What is Feet per Second?
Feet per Second (ft/s) is a unit of speed. Feet-per-second measures speed as feet traveled in one second. It converts to meters per second by multiplying feet by 0.3048. This unit is common in physics, ballistics, and engineering to express rapid velocities [iso-80000]. Feet-per-second became standardized with the development of modern physics and engineering in the late 19th and early 20th centuries. It was adopted for precise, short-interval velocity measurements in the imperial system [nist-si-guide]. Feet-per-second is widely used in the United States for projectile speeds, fluid flow velocities, and mechanical motion. It is less frequent outside imperial system countries, where meters per second is preferred [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: knotz, knotses, knotss, knotts, feet per second, ft per second, feet/sec, fps. All of these refer to the Knots to Feet per Second conversion.