## 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 221 feet per second into knots we have to multiply 221 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

221 ft/s → V(kt)

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

V(kt) = 221 ft/s × 0.59248380129641 kt

V(kt) = 130.93892008651 kt

The final result is:

221 ft/s → 130.93892008651 kt

We conclude that 221 feet per second is equivalent to 130.93892008651 knots:

221 feet per second = 130.93892008651 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0076371486746594 × 221 feet per second.

Another way is saying that 221 feet per second is equal to 1 ÷ 0.0076371486746594 knots.

## Approximate result

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

221 ft/s ≅ 130.939 kt

An alternative is also that one knot is approximately zero point zero zero eight times two 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

feet per second (ft/s) knots (kt)
222 feet per second 131.531 knots
223 feet per second 132.124 knots
224 feet per second 132.716 knots
225 feet per second 133.309 knots
226 feet per second 133.901 knots
227 feet per second 134.494 knots
228 feet per second 135.086 knots
229 feet per second 135.679 knots
230 feet per second 136.271 knots
231 feet per second 136.864 knots