Answer:
If the college or university offers an LPN to RN completion program, it could take approximately 1 1/2 years to complete once the student starts to professional phase of the program. The length of time to complete this program also depends on the institutions general education requirements. In other words, the student may have to complete, anatomy and physiology I and II, Microbiology, chemistry, general and child psychology, sociology, English composition I and II, and humanities electives before hand if they have not been completed already. Each institution may have requirements particular to its own program.
The above is based on an associates completion program and not a Bachelors in Nursing (BSN).