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 138 miles per hour into knots we have to multiply 138 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

138 mph → V_(kt)

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

V_(kt) = 138 mph × 0.8689762419014 kt

V_(kt) = 119.91872138239 kt

The final result is:

138 mph → 119.91872138239 kt

We conclude that 138 miles per hour is equivalent to 119.91872138239 knots:

138 miles per hour = 119.91872138239 knots

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.0083389815074098 × 138 miles per hour.

Another way is saying that 138 miles per hour is equal to 1 ÷ 0.0083389815074098 knots.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred thirty-eight miles per hour is approximately one hundred nineteen point nine one nine knots:

138 mph ≅ 119.919 kt

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