With this information, you can calculate the quantity of knots 81 feet per minute is equal to.
¿What is the inverse calculation between 1 knot and 81 feet per minute?
Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 1.2502295 times 81 feet per minute.
Which is the same to say that 81 feet per minute is 0.79985313 knots.
Eighty-one feet per minute equals to zero knots. *Approximation
A knot is one times eighty-one feet per minute. *Approximation
