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 1215 knots into miles per hour we have to multiply 1215 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

1215 kt → V_(mph)

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

V_(mph) = 1215 kt × 1.1507794480225 mph

V_(mph) = 1398.1970293474 mph

The final result is:

1215 kt → 1398.1970293474 mph

We conclude that 1215 knots is equivalent to 1398.1970293474 miles per hour:

1215 knots = 1398.1970293474 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 0.00071520678345794 × 1215 knots.

Another way is saying that 1215 knots is equal to 1 ÷ 0.00071520678345794 miles per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand two hundred fifteen knots is approximately one thousand three hundred ninety-eight point one nine seven miles per hour:

1215 kt ≅ 1398.197 mph

An alternative is also that one mile per hour is approximately zero point zero zero one times one thousand two hundred fifteen 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