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 509 kilometers per hour into knots we have to multiply 509 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

509 km/h → V_(kt)

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

V_(kt) = 509 km/h × 0.53995680345662 kt

V_(kt) = 274.83801295942 kt

The final result is:

509 km/h → 274.83801295942 kt

We conclude that 509 kilometers per hour is equivalent to 274.83801295942 knots:

509 kilometers per hour = 274.83801295942 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0036385068762218 × 509 kilometers per hour.

Another way is saying that 509 kilometers per hour is equal to 1 ÷ 0.0036385068762218 knots.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five hundred nine kilometers per hour is approximately two hundred seventy-four point eight three eight knots:

509 km/h ≅ 274.838 kt

An alternative is also that one knot is approximately zero point zero zero four times five hundred nine 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