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 422.4 knots into miles per hour we have to multiply 422.4 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

422.4 kt → V_(mph)

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

V_(mph) = 422.4 kt × 1.1507794480225 mph

V_(mph) = 486.08923884472 mph

The final result is:

422.4 kt → 486.08923884472 mph

We conclude that 422.4 knots is equivalent to 486.08923884472 miles per hour:

422.4 knots = 486.08923884472 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 0.0020572354211681 × 422.4 knots.

Another way is saying that 422.4 knots is equal to 1 ÷ 0.0020572354211681 miles per hour.

Approximate result

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

422.4 kt ≅ 486.089 mph

An alternative is also that one mile per hour is approximately zero point zero zero two times four hundred twenty-two point four 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