Sleep Calculator — Best Wake Times (Full Sleep Cycles)

Calculate Wake-Up Times

Enter when you plan to sleep and choose your preference — we show practical wake times for full cycles.

Quick guide: A typical sleep cycle ≈ 90 minutes (light → deep → REM). Aim to wake at the end of a cycle to feel less groggy. This tool suggests times; pick the one that fits your schedule.

Tip: set an alarm 10–15 minutes before your chosen wake time to account for falling asleep and alarms.

Why it helps

Waking at cycle boundaries usually feels more natural. This calculator helps you pick times aligned with typical 90-minute cycles and includes nap-friendly options.

How it works

We add 90-minute increments to the bedtime and present the times — handling wrap-around midnight and showing durations.

SEO keywords

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Important note

This tool provides general guidance only. If you have persistent sleep issues, consult a healthcare professional.

Privacy

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