Calculate ideal sleep hours for your baby by age. Get total sleep, nap, and nighttime recommendations from newborn to 3 years.
Sleep is vital for a baby's physical and cognitive development. The amount of sleep a baby needs changes dramatically in the first few years. Newborns sleep 14-17 hours daily, while toddlers need 11-14 hours.
Understanding age-appropriate sleep guidelines helps parents establish healthy routines and identify potential sleep issues. The American Academy of Sleep Medicine (AASM) provides evidence-based recommendations for total sleep by age.
This calculator shows recommended total sleep, daytime nap duration, and nighttime sleep based on your baby's age. It also provides typical nap counts and suggested bedtime ranges. Whether you are a beginner or experienced professional, this free online tool provides instant, reliable results without manual computation. By automating the calculation, you save time and reduce the risk of costly errors in your planning and decision-making process. This tool handles all the complex arithmetic so you can focus on interpreting results and making informed decisions based on accurate data.
Every baby is different, but AASM guidelines provide a healthy baseline. Knowing how much sleep your baby should get helps you build a consistent schedule, spot overtiredness, and ensure adequate rest for healthy development. Having a precise figure at your fingertips empowers better planning and more confident decisions. Manual calculations are error-prone and time-consuming; this tool delivers verified results in seconds so you can focus on strategy.
0-3 months: 14-17 hours total (4-5 naps) 4-11 months: 12-15 hours total (2-3 naps) 1-2 years: 11-14 hours total (1-2 naps) 3-5 years: 10-13 hours total (0-1 nap) Source: AASM and AAP guidelines
Result: 14 hours total (3h naps + 11h night)
An 8-month-old typically needs about 14 hours of total sleep: approximately 3 hours split across 2 naps, plus 11 hours of nighttime sleep. Bedtime around 7:00-7:30 PM is common.
Sleep is when growth hormone is released and the brain consolidates new learning. Babies who consistently get adequate sleep show better cognitive development, emotional regulation, and physical growth.
Start with your desired wake time and work backward. Count the recommended total nap hours and space them based on age-appropriate wake windows. Set bedtime to allow for the recommended nighttime hours. Adjust over 1-2 weeks as baby adapts.
If your baby consistently sleeps far less than recommended, wakes excessively at night beyond 12 months, or shows signs of sleep apnea (snoring, gasping), discuss with your pediatrician. Sleep consultants can also help with persistent challenges.
Newborns (0-3 months) need 14-17 hours of sleep per day. They sleep in short 2-4 hour stretches throughout day and night. There's no set schedule at this age — follow your baby's cues.
Many babies can sleep 6-8 hour stretches by 4-6 months. True "sleeping through the night" (10-12 hours) typically develops between 6-12 months, though some babies take longer.
Newborns nap 4-5 times daily. By 6 months, most take 2-3 naps. Around 12-18 months, babies transition to 1 nap. Most children drop naps entirely between ages 3-5.
Newborns sleeping 14-17 hours is normal. If your older baby consistently exceeds the recommended range, is hard to wake, or seems lethargic, consult your pediatrician. Growth spurts can temporarily increase sleep needs.
Most babies do best with a bedtime between 6:30-8:00 PM. The exact time depends on their age, nap schedule, and wake-up time. Earlier bedtimes often result in better quality sleep.
Common reasons: overtiredness, undertiredness (not enough awake time), hunger, teething, developmental leaps, or environmental factors. Adjusting wake windows and ensuring a calm pre-sleep routine usually helps.