## 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 45 knots into miles per hour we have to multiply 45 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

45 kt → V(mph)

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

V(mph) = 45 kt × 1.1507794480225 mph

V(mph) = 51.785075161015 mph

The final result is:

45 kt → 51.785075161015 mph

We conclude that 45 knots is equivalent to 51.785075161015 miles per hour:

45 knots = 51.785075161015 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 0.019310583153364 × 45 knots.

Another way is saying that 45 knots is equal to 1 ÷ 0.019310583153364 miles per hour.

## Approximate result

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

45 kt ≅ 51.785 mph

An alternative is also that one mile per hour is approximately zero point zero one nine times forty-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)
46 knots 52.936 miles per hour
47 knots 54.087 miles per hour
48 knots 55.237 miles per hour
49 knots 56.388 miles per hour
50 knots 57.539 miles per hour
51 knots 58.69 miles per hour
52 knots 59.841 miles per hour
53 knots 60.991 miles per hour
54 knots 62.142 miles per hour
55 knots 63.293 miles per hour