Sleep time calculator
Enter your baby's age and we'll guide you on the recommended daily sleep and number of naps, plus wake windows. Enter the last wake time and we'll tell you roughly when your baby will get sleepy next.
Enter an age and the recommended-sleep guidance will appear.
This result is reference information based on general public standards and is not a substitute for medical diagnosis, treatment, or professional advice. The sleep each baby needs varies from baby to baby. If anything about your baby concerns you, please consult a pediatric professional.
Recommended-sleep reference table by age
| Age | Total daily sleep | Naps | Awake time |
|---|---|---|---|
| 0–3 months | 14–17 hours | 4–5 | 45 min–1 hour |
| 4–5 months | 12–16 hours | 3–4 | 1 hr 30 min–2 hours |
| 6–8 months | 12–15 hours | 2–3 | 2–3 hours |
| 9–12 months | 12–15 hours | 2 | 3–4 hours |
| 1–2 years | 11–14 hours | 1–2 | 4–5 hours |
| 3–5 years | 10–13 hours | 0–1 | 5–6 hours |
FAQ
What is a wake window?
It's the time a baby can comfortably stay awake between one sleep and the next. The younger the baby, the shorter it is; it grows longer with age. Going past this window can make a baby overtired and, paradoxically, harder to settle.
What is the basis for the recommended sleep times?
It's based on the age-by-age recommended sleep times from the U.S. National Sleep Foundation (NSF) and the American Academy of Sleep Medicine (AASM). Common ranges are 14–17 hours for 0–3 months, 12–16 hours for 4–11 months (including naps), 11–14 hours for 1–2 years, and 10–13 hours for 3–5 years.
My baby sleeps less than recommended. Is that okay?
Recommended times are just an average range, and the sleep each baby needs varies. If your baby is in a good mood during the day, feeds well, and is developing steadily, it's usually fine. If sleep seems extremely short or you're worried, consult a professional.
How is the next sleep time calculated?
We add an age-appropriate wake window to the last wake time to estimate roughly when your baby will get sleepy next. Use it alongside your baby's sleepy cues (rubbing eyes, fussing, etc.).