Baby Growth Spurt Calculator
Predict Growth Spurts
See upcoming and past growth spurts based on baby's age
Formula
Growth spurt windows: 1-2 wks, 3-4 wks, 6-8 wks, 3 mo, 4 mo, 6 mo, 9 mo, 12 mo, 18 mo, 24 mo. Duration: typically 2-7 days each.
Frequently Asked Questions
When do babies have growth spurts?
Common growth spurt ages are: 1-2 weeks, 3-4 weeks, 6-8 weeks, 3 months, 4 months, 6 months, 9 months, and 12 months. However, every baby is different and spurts may not occur exactly at these times.
How long do baby growth spurts last?
Growth spurts typically last 2-7 days. During this time, babies often want to eat more frequently (cluster feeding), may be fussier than usual, and may have disrupted sleep. Once the spurt passes, feeding and sleep usually normalize.
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