## 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 398 feet per second into knots we have to multiply 398 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

398 ft/s → V(kt)

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

V(kt) = 398 ft/s × 0.59248380129641 kt

V(kt) = 235.80855291597 kt

The final result is:

398 ft/s → 235.80855291597 kt

We conclude that 398 feet per second is equivalent to 235.80855291597 knots:

398 feet per second = 235.80855291597 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0042407282841702 × 398 feet per second.

Another way is saying that 398 feet per second is equal to 1 ÷ 0.0042407282841702 knots.

## Approximate result

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

398 ft/s ≅ 235.809 kt

An alternative is also that one knot is approximately zero point zero zero four times three hundred ninety-eight 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)
399 feet per second 236.401 knots
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