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 4221 knots into feet per second we have to multiply 4221 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

4221 kt → V_(ft/s)

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

V_(ft/s) = 4221 kt × 1.6878098570997 ft/s

V_(ft/s) = 7124.245406818 ft/s

The final result is:

4221 kt → 7124.245406818 ft/s

We conclude that 4221 knots is equivalent to 7124.245406818 feet per second:

4221 knots = 7124.245406818 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 0.00014036574302213 × 4221 knots.

Another way is saying that 4221 knots is equal to 1 ÷ 0.00014036574302213 feet per second.

Approximate result

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

4221 kt ≅ 7124.245 ft/s

An alternative is also that one foot per second is approximately zero times four thousand two hundred twenty-one 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