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 491 miles per hour into knots we have to multiply 491 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

491 mph → V_(kt)

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

V_(kt) = 491 mph × 0.8689762419014 kt

V_(kt) = 426.66733477359 kt

The final result is:

491 mph → 426.66733477359 kt

We conclude that 491 miles per hour is equivalent to 426.66733477359 knots:

491 miles per hour = 426.66733477359 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0023437463299848 × 491 miles per hour.

Another way is saying that 491 miles per hour is equal to 1 ÷ 0.0023437463299848 knots.

Approximate result

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

491 mph ≅ 426.667 kt

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