Sleep calculators & tools
Start with the simple sleep calculator or choose a focused tool for bedtime, wake-up time, cycles, naps, sleep duration and more.
Our flagship bedtime and wake-up calculator.
Work backward from your wake-up time.
Calculate possible wake-up times from bedtime.
See completion times for one through six cycles.
Plan a nap and approximate wake-up time.
Calculate elapsed time between bedtime and waking.
View general age-based sleep recommendations.
Compare recent average sleep with your target.
Plan sleep around approximate local sunrise.
Which sleep calculator should I use?
Use the main Sleep Calculator when you simply want bedtime or wake-up suggestions. The focused tools provide additional controls for a specific question without making the homepage complicated.