Conversion formula

The conversion factor from miles per hour to knots is 0.8689762419014, which means that 1 mile per hour is equal to 0.8689762419014 knots:

1 mph = 0.8689762419014 kt

To convert 721 miles per hour into knots we have to multiply 721 by the conversion factor in order to get the velocity amount from miles per hour to knots. We can also form a simple proportion to calculate the result:

1 mph → 0.8689762419014 kt

721 mph → V_(kt)

Solve the above proportion to obtain the velocity V in knots:

V_(kt) = 721 mph × 0.8689762419014 kt

V_(kt) = 626.53187041091 kt

The final result is:

721 mph → 626.53187041091 kt

We conclude that 721 miles per hour is equivalent to 626.53187041091 knots:

721 miles per hour = 626.53187041091 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0015960880000313 × 721 miles per hour.

Another way is saying that 721 miles per hour is equal to 1 ÷ 0.0015960880000313 knots.

Approximate result

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

721 mph ≅ 626.532 kt

An alternative is also that one knot is approximately zero point zero zero two times seven hundred twenty-one miles per hour.

Conversion table

miles per hour to knots chart

For quick reference purposes, below is the conversion table you can use to convert from miles per hour to knots