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 397.5 feet per second into knots we have to multiply 397.5 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

397.5 ft/s → V_(kt)

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

V_(kt) = 397.5 ft/s × 0.59248380129641 kt

V_(kt) = 235.51231101532 kt

The final result is:

397.5 ft/s → 235.51231101532 kt

We conclude that 397.5 feet per second is equivalent to 235.51231101532 knots:

397.5 feet per second = 235.51231101532 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0042460625335842 × 397.5 feet per second.

Another way is saying that 397.5 feet per second is equal to 1 ÷ 0.0042460625335842 knots.

Approximate result

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

397.5 ft/s ≅ 235.512 kt

An alternative is also that one knot is approximately zero point zero zero four times three hundred ninety-seven point five 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