200 kn to ft/s — 200 knots in feet per second
Exact 200 × 1.68781 = 337.561971
200 knots in other units
| Metres per second | 102.888889 | m/s |
|---|---|---|
| Kilometres per hour | 370.4 | km/h |
| Miles per hour | 230.15589 | mph |
| Feet per second | 337.561971 | ft/s |
kn to ft/s at a glance
| Knots | Feet per second |
|---|---|
| 1 kn | 1.68781 ft/s |
| 2 kn | 3.37562 ft/s |
| 3 kn | 5.06343 ft/s |
| 5 kn | 8.439049 ft/s |
| 10 kn | 16.878099 ft/s |
| 20 kn | 33.756197 ft/s |
| 25 kn | 42.195246 ft/s |
| 50 kn | 84.390493 ft/s |
| 100 kn | 168.780986 ft/s |
| 250 kn | 421.952464 ft/s |
| 500 kn | 843.904929 ft/s |
| 1,000 kn | 1,687.81 ft/s |
How to convert knots to feet per second
Multiply by 1.68781 — one knot is 1.68781 feet per second. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 200 × 1.68781 = 337.561971
In words: about three hundred thirty-eight feet per second.
What these units are
The knot and the foot per second are covered in the speed unit guide, along with every other unit on this page.
Questions
How many feet per second are in a knot?
One knot is 1.68781 feet per second. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 200 knots in feet per second?
200 knots is 337.561971 feet per second. The working is 200 × 1.68781 = 337.561971.
What is a knot?
One nautical mile per hour — and a nautical mile is one minute of latitude, fixed at exactly 1,852 metres. That is the whole point of it: a ship making 10 knots for six hours has covered one degree of latitude, which you can read straight off a chart without converting anything.
Why do sailors and pilots say "knots" and not "knots per hour"?
Because the "per hour" is already inside the word. A knot is a speed, not a distance, so "knots per hour" would be an acceleration. The name comes from the knotted rope once paid out behind a ship and counted against a sand glass.
What's the quick way to convert mph to km/h in my head?
Multiply by 1.6, or add 60%. For the other direction, take away a third and then a little more. Fifty mph is 80 km/h, 60 is 97, 70 is 113 — worth remembering if you drive across a border where the signs change.
Why isn't Mach on this page?
Because it is not a fixed unit. Mach 1 is the local speed of sound, which falls as air gets colder — around 1,235 km/h at sea level but closer to 1,062 km/h in the stratosphere where airliners cruise. A single conversion factor would be wrong nearly everywhere.