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 686 knots into feet per second we have to multiply 686 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

686 kt → V_(ft/s)

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

V_(ft/s) = 686 kt × 1.6878098570997 ft/s

V_(ft/s) = 1157.8375619704 ft/s

The final result is:

686 kt → 1157.8375619704 ft/s

We conclude that 686 knots is equivalent to 1157.8375619704 feet per second:

686 knots = 1157.8375619704 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 0.00086367901063616 × 686 knots.

Another way is saying that 686 knots is equal to 1 ÷ 0.00086367901063616 feet per second.

Approximate result

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

686 kt ≅ 1157.838 ft/s

An alternative is also that one foot per second is approximately zero point zero zero one times six hundred eighty-six 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