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 688 knots into feet per second we have to multiply 688 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

688 kt → V_(ft/s)

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

V_(ft/s) = 688 kt × 1.6878098570997 ft/s

V_(ft/s) = 1161.2131816846 ft/s

The final result is:

688 kt → 1161.2131816846 ft/s

We conclude that 688 knots is equivalent to 1161.2131816846 feet per second:

688 knots = 1161.2131816846 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 0.0008611683158378 × 688 knots.

Another way is saying that 688 knots is equal to 1 ÷ 0.0008611683158378 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-eight knots is approximately one thousand one hundred sixty-one point two one three feet per second:

688 kt ≅ 1161.213 ft/s

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