## 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 40.4 knots into miles per hour we have to multiply 40.4 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

40.4 kt → V(mph)

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

V(mph) = 40.4 kt × 1.1507794480225 mph

V(mph) = 46.491489700111 mph

The final result is:

40.4 kt → 46.491489700111 mph

We conclude that 40.4 knots is equivalent to 46.491489700111 miles per hour:

40.4 knots = 46.491489700111 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 0.021509312918351 × 40.4 knots.

Another way is saying that 40.4 knots is equal to 1 ÷ 0.021509312918351 miles per hour.

## Approximate result

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

40.4 kt ≅ 46.491 mph

An alternative is also that one mile per hour is approximately zero point zero two two times forty 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

knots (kt) miles per hour (mph)
41.4 knots 47.642 miles per hour
42.4 knots 48.793 miles per hour
43.4 knots 49.944 miles per hour
44.4 knots 51.095 miles per hour
45.4 knots 52.245 miles per hour
46.4 knots 53.396 miles per hour
47.4 knots 54.547 miles per hour
48.4 knots 55.698 miles per hour
49.4 knots 56.849 miles per hour
50.4 knots 57.999 miles per hour