## 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 4.5 knots into miles per hour we have to multiply 4.5 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

4.5 kt → V(mph)

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

V(mph) = 4.5 kt × 1.1507794480225 mph

V(mph) = 5.1785075161015 mph

The final result is:

4.5 kt → 5.1785075161015 mph

We conclude that 4.5 knots is equivalent to 5.1785075161015 miles per hour:

4.5 knots = 5.1785075161015 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 0.19310583153364 × 4.5 knots.

Another way is saying that 4.5 knots is equal to 1 ÷ 0.19310583153364 miles per hour.

## Approximate result

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

4.5 kt ≅ 5.179 mph

An alternative is also that one mile per hour is approximately zero point one nine three times four point five 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)
5.5 knots 6.329 miles per hour
6.5 knots 7.48 miles per hour
7.5 knots 8.631 miles per hour
8.5 knots 9.782 miles per hour
9.5 knots 10.932 miles per hour
10.5 knots 12.083 miles per hour
11.5 knots 13.234 miles per hour
12.5 knots 14.385 miles per hour
13.5 knots 15.536 miles per hour
14.5 knots 16.686 miles per hour