7 m/s to kn — 7 metres per second in knots
Exact 7 × 1.943844 = 13.606911
7 metres per second in other units
| Kilometres per hour | 25.2 | km/h |
|---|---|---|
| Miles per hour | 15.658554 | mph |
| Feet per second | 22.965879 | ft/s |
| Knots | 13.606911 | kn |
m/s to kn at a glance
| Metres per second | Knots |
|---|---|
| 1 m/s | 1.943844 kn |
| 2 m/s | 3.887689 kn |
| 3 m/s | 5.831533 kn |
| 5 m/s | 9.719222 kn |
| 10 m/s | 19.438445 kn |
| 20 m/s | 38.87689 kn |
| 25 m/s | 48.596112 kn |
| 50 m/s | 97.192225 kn |
| 100 m/s | 194.384449 kn |
| 250 m/s | 485.961123 kn |
| 500 m/s | 971.922246 kn |
| 1,000 m/s | 1,943.84 kn |
How to convert metres per second to knots
Multiply by 1.943844 — one metre per second is 1.943844 knots. 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 7 × 1.943844 = 13.606911
In words: about fourteen knots.
Questions
How many knots are in a metre per second?
One metre per second is 1.943844 knots. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 7 metres per second in knots?
7 metres per second is 13.606911 knots. The working is 7 × 1.943844 = 13.606911.
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.