Conversion formula

The conversion factor from miles per hour to knots is 0.8689762419014, which means that 1 mile per hour is equal to 0.8689762419014 knots:

1 mph = 0.8689762419014 kt

To convert 489 miles per hour into knots we have to multiply 489 by the conversion factor in order to get the velocity amount from miles per hour to knots. We can also form a simple proportion to calculate the result:

1 mph → 0.8689762419014 kt

489 mph → V_(kt)

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

V_(kt) = 489 mph × 0.8689762419014 kt

V_(kt) = 424.92938228978 kt

The final result is:

489 mph → 424.92938228978 kt

We conclude that 489 miles per hour is equivalent to 424.92938228978 knots:

489 miles per hour = 424.92938228978 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0023533322045451 × 489 miles per hour.

Another way is saying that 489 miles per hour is equal to 1 ÷ 0.0023533322045451 knots.

Approximate result

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

489 mph ≅ 424.929 kt

An alternative is also that one knot is approximately zero point zero zero two times four hundred eighty-nine miles per hour.

Conversion table

miles per hour to knots chart

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