Conversion formula

The conversion factor from feet per second to knots is 0.59248380129641, which means that 1 foot per second is equal to 0.59248380129641 knots:

1 ft/s = 0.59248380129641 kt

To convert 1091 feet per second into knots we have to multiply 1091 by the conversion factor in order to get the velocity amount from feet per second to knots. We can also form a simple proportion to calculate the result:

1 ft/s → 0.59248380129641 kt

1091 ft/s → V_(kt)

Solve the above proportion to obtain the velocity V in knots:

V_(kt) = 1091 ft/s × 0.59248380129641 kt

V_(kt) = 646.39982721438 kt

The final result is:

1091 ft/s → 646.39982721438 kt

We conclude that 1091 feet per second is equivalent to 646.39982721438 knots:

1091 feet per second = 646.39982721438 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0015470301164984 × 1091 feet per second.

Another way is saying that 1091 feet per second is equal to 1 ÷ 0.0015470301164984 knots.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand ninety-one feet per second is approximately six hundred forty-six point four knots:

1091 ft/s ≅ 646.4 kt

An alternative is also that one knot is approximately zero point zero zero two times one thousand ninety-one feet per second.

Conversion table

feet per second to knots chart

For quick reference purposes, below is the conversion table you can use to convert from feet per second to knots