Sleep Cycle Calculator

Nap Transition Calculator

Wake-Window Calculator

Nap transitions are major milestones in your child's sleep development. These typically occur around 4 months (5→4 naps), 6-8 months (4→3 naps), 12-18 months (3→2 naps), and 2.5-4 years (2→1 nap or dropping naps entirely).

Signs your child is ready for a nap transition include consistently refusing one nap, taking longer to fall asleep, shorter naps, or early morning wake-ups. The transition period usually lasts 2-4 weeks and requires gradually adjusting wake windows and nap times.

During transitions, be flexible and patient. Some days your child might need the old schedule, while others they'll handle the new one. Gradually extend wake windows by 15-30 minutes and watch for overtiredness cues to ensure a smooth transition.

FAQ

How accurate is this calculator?

Our algorithm is based on pediatric sleep-consultant guidelines and real-world parent data. Still, every baby is unique—use it as a starting point.

Can I use this schedule for premature babies?

Premature babies often need shorter wake windows. Adjust by their corrected age and consult your pediatrician.