## 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 646 feet per second into knots we have to multiply 646 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

646 ft/s → V(kt)

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

V(kt) = 646 ft/s × 0.59248380129641 kt

V(kt) = 382.74453563748 kt

The final result is:

646 ft/s → 382.74453563748 kt

We conclude that 646 feet per second is equivalent to 382.74453563748 knots:

646 feet per second = 382.74453563748 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0026127087571203 × 646 feet per second.

Another way is saying that 646 feet per second is equal to 1 ÷ 0.0026127087571203 knots.

## Approximate result

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

646 ft/s ≅ 382.745 kt

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

feet per second (ft/s) knots (kt)
647 feet per second 383.337 knots
648 feet per second 383.93 knots
649 feet per second 384.522 knots
650 feet per second 385.114 knots
651 feet per second 385.707 knots
652 feet per second 386.299 knots
653 feet per second 386.892 knots
654 feet per second 387.484 knots
655 feet per second 388.077 knots
656 feet per second 388.669 knots