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 391 feet per second into knots we have to multiply 391 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

391 ft/s → V_(kt)

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

V_(kt) = 391 ft/s × 0.59248380129641 kt

V_(kt) = 231.6611663069 kt

The final result is:

391 ft/s → 231.6611663069 kt

We conclude that 391 feet per second is equivalent to 231.6611663069 knots:

391 feet per second = 231.6611663069 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0043166492508945 × 391 feet per second.

Another way is saying that 391 feet per second is equal to 1 ÷ 0.0043166492508945 knots.

Approximate result

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

391 ft/s ≅ 231.661 kt

An alternative is also that one knot is approximately zero point zero zero four times three hundred 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