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 438 knots into miles per hour we have to multiply 438 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

438 kt → V_(mph)

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

V_(mph) = 438 kt × 1.1507794480225 mph

V_(mph) = 504.04139823388 mph

The final result is:

438 kt → 504.04139823388 mph

We conclude that 438 knots is equivalent to 504.04139823388 miles per hour:

438 knots = 504.04139823388 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 0.0019839640226059 × 438 knots.

Another way is saying that 438 knots is equal to 1 ÷ 0.0019839640226059 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 thirty-eight knots is approximately five hundred four point zero four one miles per hour:

438 kt ≅ 504.041 mph

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