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 490 miles per hour into knots we have to multiply 490 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

490 mph → V_(kt)

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

V_(kt) = 490 mph × 0.8689762419014 kt

V_(kt) = 425.79835853169 kt

The final result is:

490 mph → 425.79835853169 kt

We conclude that 490 miles per hour is equivalent to 425.79835853169 knots:

490 miles per hour = 425.79835853169 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0023485294857603 × 490 miles per hour.

Another way is saying that 490 miles per hour is equal to 1 ÷ 0.0023485294857603 knots.

Approximate result

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

490 mph ≅ 425.798 kt

An alternative is also that one knot is approximately zero point zero zero two times four hundred ninety 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