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 665.6 feet per second into knots we have to multiply 665.6 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

665.6 ft/s → V_(kt)

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

V_(kt) = 665.6 ft/s × 0.59248380129641 kt

V_(kt) = 394.35721814289 kt

The final result is:

665.6 ft/s → 394.35721814289 kt

We conclude that 665.6 feet per second is equivalent to 394.35721814289 knots:

665.6 feet per second = 394.35721814289 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.002535772020883 × 665.6 feet per second.

Another way is saying that 665.6 feet per second is equal to 1 ÷ 0.002535772020883 knots.

Approximate result

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

665.6 ft/s ≅ 394.357 kt

An alternative is also that one knot is approximately zero point zero zero three times six hundred sixty-five point six 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