## 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 feet per second into knots we have to multiply 668 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 ft/s → V(kt)

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

V(kt) = 668 ft/s × 0.59248380129641 kt

V(kt) = 395.779179266 kt

The final result is:

668 ft/s → 395.779179266 kt

We conclude that 668 feet per second is equivalent to 395.779179266 knots:

668 feet per second = 395.779179266 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0025266614627242 × 668 feet per second.

Another way is saying that 668 feet per second is equal to 1 ÷ 0.0025266614627242 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 feet per second is approximately three hundred ninety-five point seven seven nine knots:

668 ft/s ≅ 395.779 kt

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

feet per second (ft/s) knots (kt)
669 feet per second 396.372 knots
670 feet per second 396.964 knots
671 feet per second 397.557 knots
672 feet per second 398.149 knots
673 feet per second 398.742 knots
674 feet per second 399.334 knots
675 feet per second 399.927 knots
676 feet per second 400.519 knots
677 feet per second 401.112 knots
678 feet per second 401.704 knots