Conversion formula

The conversion factor from feet per second to knots is 0.59248380129641, which means that 1 foot per second is equal to 0.59248380129641 knots:

1 ft/s = 0.59248380129641 kt

To convert 821 feet per second into knots we have to multiply 821 by the conversion factor in order to get the velocity amount from feet per second to knots. We can also form a simple proportion to calculate the result:

1 ft/s → 0.59248380129641 kt

821 ft/s → V_(kt)

Solve the above proportion to obtain the velocity V in knots:

V_(kt) = 821 ft/s × 0.59248380129641 kt

V_(kt) = 486.42920086435 kt

The final result is:

821 ft/s → 486.42920086435 kt

We conclude that 821 feet per second is equivalent to 486.42920086435 knots:

821 feet per second = 486.42920086435 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0020557976334954 × 821 feet per second.

Another way is saying that 821 feet per second is equal to 1 ÷ 0.0020557976334954 knots.

Approximate result

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

821 ft/s ≅ 486.429 kt

An alternative is also that one knot is approximately zero point zero zero two times eight hundred twenty-one feet per second.

Conversion table

feet per second to knots chart

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