## 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 399 feet per second into knots we have to multiply 399 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

399 ft/s → V(kt)

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

V(kt) = 399 ft/s × 0.59248380129641 kt

V(kt) = 236.40103671727 kt

The final result is:

399 ft/s → 236.40103671727 kt

We conclude that 399 feet per second is equivalent to 236.40103671727 knots:

399 feet per second = 236.40103671727 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0042300998924805 × 399 feet per second.

Another way is saying that 399 feet per second is equal to 1 ÷ 0.0042300998924805 knots.

## Approximate result

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

399 ft/s ≅ 236.401 kt

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

feet per second (ft/s) knots (kt)
400 feet per second 236.994 knots
401 feet per second 237.586 knots
402 feet per second 238.178 knots
403 feet per second 238.771 knots
404 feet per second 239.363 knots
405 feet per second 239.956 knots
406 feet per second 240.548 knots
407 feet per second 241.141 knots
408 feet per second 241.733 knots
409 feet per second 242.326 knots