How many is
Conversion between units of measurement
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You can easily convert 81 feet per second into knots using each unit definition:

Feet per second
0.3048 m / s
Knots
nauticalmile / hr = 0.51444444 m / s

With this information, you can calculate the quantity of knots 81 feet per second is equal to.

¿How many kn are there in 81 ft/s?

In 81 ft/s there are 47.991188 kn.

Which is the same to say that 81 feet per second is 47.991188 knots.

Eighty-one feet per second equals to forty-seven knots. *Approximation

¿What is the inverse calculation between 1 knot and 81 feet per second?

Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.020837159 times 81 feet per second.

A knot is zero times eighty-one feet per second. *Approximation

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