## 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 18.5 knots into miles per hour we have to multiply 18.5 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

18.5 kt → V(mph)

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

V(mph) = 18.5 kt × 1.1507794480225 mph

V(mph) = 21.289419788417 mph

The final result is:

18.5 kt → 21.289419788417 mph

We conclude that 18.5 knots is equivalent to 21.289419788417 miles per hour:

18.5 knots = 21.289419788417 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 0.046971688751427 × 18.5 knots.

Another way is saying that 18.5 knots is equal to 1 ÷ 0.046971688751427 miles per hour.

## Approximate result

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

18.5 kt ≅ 21.289 mph

An alternative is also that one mile per hour is approximately zero point zero four seven times eighteen 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)
19.5 knots 22.44 miles per hour
20.5 knots 23.591 miles per hour
21.5 knots 24.742 miles per hour
22.5 knots 25.893 miles per hour
23.5 knots 27.043 miles per hour
24.5 knots 28.194 miles per hour
25.5 knots 29.345 miles per hour
26.5 knots 30.496 miles per hour
27.5 knots 31.646 miles per hour
28.5 knots 32.797 miles per hour