With this information, you can calculate the quantity of hours 15 seconds is equal to.

¿What is the inverse calculation between 1 hour and 15 seconds?

Performing the inverse calculation of the relationship between units, we obtain that 1 hour is 240 times 15 seconds.

Which is the same to say that 15 seconds is 0.0041666667 hours.

Fifteen seconds equals to zero hours. *Approximation

A hour is two hundred forty times fifteen seconds. *Approximation