How Much Sleep Do Babies Need?

Newborns sleep a lot they typically need 14 to 18 hours a day during the first week and 12 to 16 hours a day by the time they're a month old. But most babies don't stay asleep for more than two to four hours at a time, day or night, during the first few weeks of life.

At 3 months, most babies sleep a total of 12 to 15 hours a day, including nighttime sleep and naps.

By 6 months of age , most babies sleep a total of 11 1/2 to 15 hours of sleep a day (between nighttime sleep and naps) and are capable of sleeping for long stretches at a time.  A long stretch means 5-6hrs at a time.  

At 9 to 12 months, babies typically sleep 11 to 14 hours a night and nap twice a day for one to two hours at a time.

Age	Nighttime sleep	Daytime sleep	Average total sleep
2 years	10.5 to 12.5 hours	1 to 3 hours (1 nap)	11.5 to 15.5 hours
3 years	10.5 to 12.5 hours	1 to 3 hours (1 nap)	11 to 14 hours
4 years	10 to 12 hours	0 to 2.5 hours (1 or no nap)	10 to 13 hours
5 years	10 to 12 hours	0 to 2.5 hours (1 or no nap)	10 to 12.5 hours
6 years	10 to 11.5 hours	none	10 to 11.5 hours
7 years	9.5 to 11.5 hours	none	9.5 to 11.5 hours
8 years	9.5 to 11.5 hours	none	9.5 to 11.5 hours
*Note: The two sets of numbers don't always add up because children who take longer naps tend to sleep fewer hours at night, and vice versa. All this is taken from www.babycenter.com