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 427 knots into miles per hour we have to multiply 427 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

427 kt → V_(mph)

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

V_(mph) = 427 kt × 1.1507794480225 mph

V_(mph) = 491.38282430563 mph

The final result is:

427 kt → 491.38282430563 mph

We conclude that 427 knots is equivalent to 491.38282430563 miles per hour:

427 knots = 491.38282430563 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 0.0020350731660454 × 427 knots.

Another way is saying that 427 knots is equal to 1 ÷ 0.0020350731660454 miles per hour.

Approximate result

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

427 kt ≅ 491.383 mph

An alternative is also that one mile per hour is approximately zero point zero zero two times four hundred twenty-seven 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