Conversion formula

The conversion factor from knots to miles per hour is 1.1507794480225, which means that 1 knot is equal to 1.1507794480225 miles per hour:

1 kt = 1.1507794480225 mph

To convert 509 knots into miles per hour we have to multiply 509 by the conversion factor in order to get the velocity amount from knots to miles per hour. We can also form a simple proportion to calculate the result:

1 kt → 1.1507794480225 mph

509 kt → V_(mph)

Solve the above proportion to obtain the velocity V in miles per hour:

V_(mph) = 509 kt × 1.1507794480225 mph

V_(mph) = 585.74673904348 mph

The final result is:

509 kt → 585.74673904348 mph

We conclude that 509 knots is equivalent to 585.74673904348 miles per hour:

509 knots = 585.74673904348 miles per hour

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile per hour is equal to 0.0017072224791776 × 509 knots.

Another way is saying that 509 knots is equal to 1 ÷ 0.0017072224791776 miles per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five hundred nine knots is approximately five hundred eighty-five point seven four seven miles per hour:

509 kt ≅ 585.747 mph

An alternative is also that one mile per hour is approximately zero point zero zero two times five hundred nine knots.

Conversion table

knots to miles per hour chart

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