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