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 668.9 feet per second into knots we have to multiply 668.9 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

668.9 ft/s → V_(kt)

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

V_(kt) = 668.9 ft/s × 0.59248380129641 kt

V_(kt) = 396.31241468717 kt

The final result is:

668.9 ft/s → 396.31241468717 kt

We conclude that 668.9 feet per second is equivalent to 396.31241468717 knots:

668.9 feet per second = 396.31241468717 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0025232618584239 × 668.9 feet per second.

Another way is saying that 668.9 feet per second is equal to 1 ÷ 0.0025232618584239 knots.

Approximate result

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

668.9 ft/s ≅ 396.312 kt

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