Conversion formula

The conversion factor from kilometers per hour to knots is 0.53995680345662, which means that 1 kilometer per hour is equal to 0.53995680345662 knots:

1 km/h = 0.53995680345662 kt

To convert 1221 kilometers per hour into knots we have to multiply 1221 by the conversion factor in order to get the velocity amount from kilometers per hour to knots. We can also form a simple proportion to calculate the result:

1 km/h → 0.53995680345662 kt

1221 km/h → V_(kt)

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

V_(kt) = 1221 km/h × 0.53995680345662 kt

V_(kt) = 659.28725702054 kt

The final result is:

1221 km/h → 659.28725702054 kt

We conclude that 1221 kilometers per hour is equivalent to 659.28725702054 knots:

1221 kilometers per hour = 659.28725702054 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.001516789516787 × 1221 kilometers per hour.

Another way is saying that 1221 kilometers per hour is equal to 1 ÷ 0.001516789516787 knots.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand two hundred twenty-one kilometers per hour is approximately six hundred fifty-nine point two eight seven knots:

1221 km/h ≅ 659.287 kt

An alternative is also that one knot is approximately zero point zero zero two times one thousand two hundred twenty-one kilometers per hour.

Conversion table

kilometers per hour to knots chart

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