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 1640 miles per hour into knots we have to multiply 1640 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

1640 mph → V_(kt)

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

V_(kt) = 1640 mph × 0.8689762419014 kt

V_(kt) = 1425.1210367183 kt

The final result is:

1640 mph → 1425.1210367183 kt

We conclude that 1640 miles per hour is equivalent to 1425.1210367183 knots:

1640 miles per hour = 1425.1210367183 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0007016947853796 × 1640 miles per hour.

Another way is saying that 1640 miles per hour is equal to 1 ÷ 0.0007016947853796 knots.

Approximate result

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

1640 mph ≅ 1425.121 kt

An alternative is also that one knot is approximately zero point zero zero one times one thousand six hundred forty 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