It depends on two things. If you have your master's degree and the area you want to study, but the years, approximately 4-6. but some schools might give you 7-10 years for your PhD.
usually 4-12 years
Many herpetologists have either a master's degree or a PhD. It usually takes six years to earn a master's degree, but it can take longer if you can't always carry a full schedule. It usually takes an additional 3 to 4 years to earn a PhD.
The two postgraduate degrees are a master's degree and a doctorate degree (PhD). It would take 2-3 years to earn a master's degree. After you earn a master's degree, it would take about 4-5 years to earn a PhD. There are some PhD programs that incorporate master's degree work though so you don't have to do a separate degree.
3 years after your masters. My dad has a pHd in Electrical Engineering. :D
7
3 full years
The answer to this question varies on what subject you are getting a PHD in. Most PhD courses take about 5-7 years to complete, though this could be shorter and longer depending on what you want it in.
Roughly 42
The PhD typically takes four years post bachelor's degree.
7years
Typically, it would take approximately eight years beyond high school completion.
Typically, the doctorate will take approximately four years post bachelor's degree.