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 680 miles per hour into knots we have to multiply 680 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

680 mph → V_(kt)

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

V_(kt) = 680 mph × 0.8689762419014 kt

V_(kt) = 590.90384449295 kt

The final result is:

680 mph → 590.90384449295 kt

We conclude that 680 miles per hour is equivalent to 590.90384449295 knots:

680 miles per hour = 590.90384449295 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0016923227176802 × 680 miles per hour.

Another way is saying that 680 miles per hour is equal to 1 ÷ 0.0016923227176802 knots.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred eighty miles per hour is approximately five hundred ninety point nine zero four knots:

680 mph ≅ 590.904 kt

An alternative is also that one knot is approximately zero point zero zero two times six hundred eighty 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