# Napbird > The baby sleep coach that learns your baby, not the average baby. ## How it works Enter your baby’s age and morning wake-up time. The free calculator suggests nap windows and a bedtime window. Follow your baby’s cues; these are flexible ranges. ## Wake windows by age - [Wake window chart](https://napbird.com/#wake-windows-chart): newborn through the first birthday. - [Newborn wake windows](https://napbird.com/wake-windows/newborn): 30 min to 1 hour (Cleveland Clinic). - [3 week old wake windows](https://napbird.com/wake-windows/3-week-old): 30 min to 1 hour (Cleveland Clinic). - [6 week old wake windows](https://napbird.com/wake-windows/6-week-old): 1 to 2 hours (Cleveland Clinic). - [1 month old wake windows](https://napbird.com/wake-windows/1-month-old): 1 to 2 hours (Cleveland Clinic). - [2 month old wake windows](https://napbird.com/wake-windows/2-month-old): 1 to 2 hours (Cleveland Clinic). - [3 month old wake windows](https://napbird.com/wake-windows/3-month-old): 1 hr 15 min to 2 hr 30 min (Cleveland Clinic). - [4 month old wake windows](https://napbird.com/wake-windows/4-month-old): 1 hr 15 min to 2 hr 30 min (Cleveland Clinic). - [5 month old wake windows](https://napbird.com/wake-windows/5-month-old): 2 to 4 hours (Cleveland Clinic). - [6 month old wake windows](https://napbird.com/wake-windows/6-month-old): 2 to 4 hours (Cleveland Clinic). - [7 month old wake windows](https://napbird.com/wake-windows/7-month-old): 2 hr 30 min to 4 hr 30 min (Cleveland Clinic). - [8 month old wake windows](https://napbird.com/wake-windows/8-month-old): 2 hr 30 min to 4 hr 30 min (Cleveland Clinic). - [9 month old wake windows](https://napbird.com/wake-windows/9-month-old): 2 hr 30 min to 4 hr 30 min (Cleveland Clinic). - [10 month old wake windows](https://napbird.com/wake-windows/10-month-old): 3 to 6 hours (Cleveland Clinic). - [11 month old wake windows](https://napbird.com/wake-windows/11-month-old): 3 to 6 hours (Cleveland Clinic). - [12 month old wake windows](https://napbird.com/wake-windows/12-month-old): 3 to 6 hours (Cleveland Clinic). ## Sleep resources - [Printable wake window chart: newborn to 12 months](https://napbird.com/resources/wake-window-chart) ## Calculator - [Free nap calculator](https://napbird.com/#calculator): no account needed. Dates stay in your browser. A personal nap plan starts from the calculator result. ## Pricing - [Compare plans](https://napbird.com/pricing): current Free and Coach plan details, billing periods and terms. ## Safety & sources A guide, not medical advice. For health concerns call your pediatrician / emergency services. Napbird never gives medicine or supplement advice, melatonin included. - [Cleveland Clinic](https://health.clevelandclinic.org/wake-windows-by-age): wake window ranges. - [AASM](https://aasm.org/resources/pdf/pediatricsleepdurationconsensus.pdf): sleep duration guidance. - [AAP safe sleep](https://www.healthychildren.org/English/ages-stages/baby/sleep/Pages/A-Parents-Guide-to-Safe-Sleep.aspx): back to sleep on a firm, flat, separate surface; keep the crib empty. ## Company - [About](https://napbird.com/about) - [Contact](https://napbird.com/contact): hello@napbird.com - [Privacy](https://napbird.com/privacy) - [Terms](https://napbird.com/terms) - [Refund policy](https://napbird.com/refund-policy) - [Blog](https://napbird.com/blog)