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 4.2 feet per second into knots we have to multiply 4.2 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

4.2 ft/s → V_(kt)

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

V_(kt) = 4.2 ft/s × 0.59248380129641 kt

V_(kt) = 2.4884319654449 kt

The final result is:

4.2 ft/s → 2.4884319654449 kt

We conclude that 4.2 feet per second is equivalent to 2.4884319654449 knots:

4.2 feet per second = 2.4884319654449 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.40185948978565 × 4.2 feet per second.

Another way is saying that 4.2 feet per second is equal to 1 ÷ 0.40185948978565 knots.

Approximate result

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

4.2 ft/s ≅ 2.488 kt

An alternative is also that one knot is approximately zero point four zero two times four point two 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