Wake Up Time Calculator
Already know when you go to bed? We will step forward through complete sleep cycles to find wake times that land when sleep is lightest.
When you expect to be asleep, not just in bed.
Most people take 10 to 20 minutes.
Your wake up options will appear here after you calculate.
How it works
If bedtime is fixed, the kindest wake times are the ones that fall near the end of a sleep cycle instead of in the middle of deep sleep. This calculator starts from when you expect to fall asleep, adds full 90 minute cycles, and shows the resulting wake times.
Cycle length is an estimate, so the times are suggestions rather than predictions. If you consistently wake a few minutes before the alarm feeling clear headed, your cycles are probably a little shorter than average, and that is useful information for tuning your schedule.
These calculators give planning estimates based on average sleep cycle timing. They are not medical advice and cannot diagnose sleep problems. If poor sleep persists, talk to a clinician.