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 420 feet per second into knots we have to multiply 420 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

420 ft/s → V(kt)

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

V(kt) = 420 ft/s × 0.59248380129641 kt

V(kt) = 248.84319654449 kt

The final result is:

420 ft/s → 248.84319654449 kt

We conclude that 420 feet per second is equivalent to 248.84319654449 knots:

420 feet per second = 248.84319654449 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0040185948978565 × 420 feet per second.

Another way is saying that 420 feet per second is equal to 1 ÷ 0.0040185948978565 knots.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty feet per second is approximately two hundred forty-eight point eight four three knots:

420 ft/s ≅ 248.843 kt

An alternative is also that one knot is approximately zero point zero zero four times four hundred twenty 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)
421 feet per second 249.436 knots
422 feet per second 250.028 knots
423 feet per second 250.621 knots
424 feet per second 251.213 knots
425 feet per second 251.806 knots
426 feet per second 252.398 knots
427 feet per second 252.991 knots
428 feet per second 253.583 knots
429 feet per second 254.176 knots
430 feet per second 254.768 knots