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 400 knots into feet per second we have to multiply 400 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

400 kt → V_(ft/s)

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

V_(ft/s) = 400 kt × 1.6878098570997 ft/s

V_(ft/s) = 675.12394283989 ft/s

The final result is:

400 kt → 675.12394283989 ft/s

We conclude that 400 knots is equivalent to 675.12394283989 feet per second:

400 knots = 675.12394283989 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 0.001481209503241 × 400 knots.

Another way is saying that 400 knots is equal to 1 ÷ 0.001481209503241 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 knots is approximately six hundred seventy-five point one two four feet per second:

400 kt ≅ 675.124 ft/s

An alternative is also that one foot per second is approximately zero point zero zero one times four hundred 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