Conversion formula

The conversion factor from knots to feet per second is 1.6878098570997, which means that 1 knot is equal to 1.6878098570997 feet per second:

1 kt = 1.6878098570997 ft/s

To convert 428 knots into feet per second we have to multiply 428 by the conversion factor in order to get the velocity amount from knots to feet per second. We can also form a simple proportion to calculate the result:

1 kt → 1.6878098570997 ft/s

428 kt → V_(ft/s)

Solve the above proportion to obtain the velocity V in feet per second:

V_(ft/s) = 428 kt × 1.6878098570997 ft/s

V_(ft/s) = 722.38261883869 ft/s

The final result is:

428 kt → 722.38261883869 ft/s

We conclude that 428 knots is equivalent to 722.38261883869 feet per second:

428 knots = 722.38261883869 feet per second

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot per second is equal to 0.0013843079469542 × 428 knots.

Another way is saying that 428 knots is equal to 1 ÷ 0.0013843079469542 feet per second.

Approximate result

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

428 kt ≅ 722.383 ft/s

An alternative is also that one foot per second is approximately zero point zero zero one times four hundred twenty-eight knots.

Conversion table

knots to feet per second chart

For quick reference purposes, below is the conversion table you can use to convert from knots to feet per second