## 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 0.4 knots into miles per hour we have to multiply 0.4 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

0.4 kt → V(mph)

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

V(mph) = 0.4 kt × 1.1507794480225 mph

V(mph) = 0.46031177920902 mph

The final result is:

0.4 kt → 0.46031177920902 mph

We conclude that 0.4 knots is equivalent to 0.46031177920902 miles per hour:

0.4 knots = 0.46031177920902 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 2.1724406047535 × 0.4 knots.

Another way is saying that 0.4 knots is equal to 1 ÷ 2.1724406047535 miles per hour.

## Approximate result

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

0.4 kt ≅ 0.46 mph

An alternative is also that one mile per hour is approximately two point one seven two times zero 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)
1.4 knots 1.611 miles per hour
2.4 knots 2.762 miles per hour
3.4 knots 3.913 miles per hour
4.4 knots 5.063 miles per hour
5.4 knots 6.214 miles per hour
6.4 knots 7.365 miles per hour
7.4 knots 8.516 miles per hour
8.4 knots 9.667 miles per hour
9.4 knots 10.817 miles per hour
10.4 knots 11.968 miles per hour