This info is actually part of a blog of the same title from TheSleepJudge.com. I was so impressed that I have excerpted part of it here. Enjoy!
Sleep time does vary from person to person but it also varies by age. If you have a newborn baby you will know this amount can fluctuate wildly. While you may have a friend whose child sleeps for 17 hours a day you could be struggling with a child that takes several catnaps and only sleeps for about 12 hours.
Healthy adults need between seven to nine hours to be at their best as described above but how much sleep do we need as we grow and get older?
A newborn baby should be getting at least 14 and up to 17 hours of sleep per day. This is often broken up into smaller chunks due to the needs for feeding and changing.
As a baby gets older, at four months old they will start sleeping for slightly shorter times. Between four and 11 months, your child should be sleeping between 12 and 15 hours a day.
The tricky thing with children is that sometimes they might start sleeping for 14 hours as a newborn and actually need more sleep as they grow. It is not an exact science!
A child between the ages of one and two years old should be getting about 11 to 14 hours sleep. This is a good time to introduce an afternoon nap and then try to get your baby to sleep through for eight to ten hours overnight.
At three to five years old, your baby needs ten to 13 hours sleep. Again, they might be still happy to sleep overnight and then take a nap in the afternoon. As they start school, the amount of sleep they need could increase as they are challenged physically and mentally.
At six to 13 years old, your child should be getting just a little longer than the average adult at nine to 11 hours.
A teenager should be aiming for eight to ten hours. You might find teenagers sleep a little longer than this!
All adults should be getting their seven hours or more per night but as you get into retirement age you might find it harder to sleep for longer.
A person aged over 65 only really needs seven or eight hours sleep but sometimes a nap in the day can help make up some missed hours if it is difficult to sleep overnight.
For more information go to https://www.thesleepjudge.com/how-much-sleep-do-you-need/