57%of naps at four months last 45 minutes or less. Short naps are the typical nap at this age.
Short naps are the typical nap at this age, not the exception: 37.1% of four-month-olds' naps fall between 30 and 45 minutes. The share of naps of 45 minutes or less stays around half until six months and then drops steadily as naps lengthen, to 25.9% at 12 months.
Related data: How long each nap lasts →
Complete days rebuilt from parents' own logs (a day counts when a parent logged the wake-up, every nap and bedtime), October 2025 to September 2026; no settled-routine filter. Every nap on a complete day lasts 5 to 240 minutes, as the day rules require. For each baby with at least 10 logged naps in a month of age, the share of their naps of 45 minutes or less, and of 30 to 45 minutes; averaged across babies, one vote per baby. At 4 months: 207,648 babies, 17.3 million naps.
The science behind itIs it normal that my baby only naps for 45 minutes? →
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