With this information, you can calculate the quantity of kilometers per hour 138 knots is equal to.

¿What is the inverse calculation between 1 kilometer per hour and 138 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 kilometer per hour is 0.0039127305 times 138 knots.

Which is the same to say that 138 knots is 255.576 kilometers per hour.

One hundred thirty-eight knots equals to two hundred fifty-five kilometers per hour. *Approximation

A kilometer per hour is zero times one hundred thirty-eight knots. *Approximation