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 140 miles per hour into knots we have to multiply 140 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

140 mph → V_(kt)

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

V_(kt) = 140 mph × 0.8689762419014 kt

V_(kt) = 121.6566738662 kt

The final result is:

140 mph → 121.6566738662 kt

We conclude that 140 miles per hour is equivalent to 121.6566738662 knots:

140 miles per hour = 121.6566738662 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0082198532001611 × 140 miles per hour.

Another way is saying that 140 miles per hour is equal to 1 ÷ 0.0082198532001611 knots.

Approximate result

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

140 mph ≅ 121.657 kt

An alternative is also that one knot is approximately zero point zero zero eight times one hundred forty 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