Find the best bedtime and wake-up time to maximise your beauty sleep and wake up refreshed. Based on 90-minute sleep cycles and circadian rhythm principles.
Choose what you want to calculate
What time do you need to wake up?
What time do you plan to go to bed?
Number of 90-minute cycles (4–6 recommended)
It takes about 15 minutes to fall asleep — this adjusts your bedtime accordingly
😴 Your Beauty Sleep Plan💤
--
--
⏰
Wake Up
--
Start your day
🛏️
Bedtime
--
When to get in bed
💤
Sleep Duration
--
Total sleep time
🔄
Sleep Cycles
--
90 minutes each
📋 Scientific References:
National Sleep Foundation — Adults need 7–9 hours of quality sleep.
⚠️ Medical Disclaimer: This calculator provides estimates based on sleep cycle averages. Individual sleep needs vary. Consult a healthcare provider for persistent sleep issues.
Sleep Hygiene Tips
Ad · 336×280
Understanding Beauty Sleep & Sleep Cycles
What Is Beauty Sleep?
Beauty sleep refers to quality sleep that allows the body to repair and regenerate. During deep sleep, growth hormone is released, helping repair cells and tissues. This is why good sleep is associated with healthy, glowing skin.
The 90-Minute Sleep Cycle
Sleep cycles through four stages: light sleep, deep sleep, and REM sleep. Each cycle lasts about 90 minutes. Waking at the end of a cycle (during light sleep) leaves you feeling refreshed.
💡 Clinical Insight: The National Sleep Foundation recommends 7–9 hours of sleep for adults — that's 5–6 sleep cycles.
References
National Sleep Foundation. (2024). How Much Sleep Do We Really Need?
Walker, M. (2017). Why We Sleep.
Frequently Asked Questions
Beauty sleep refers to quality sleep that allows the body to repair and regenerate. During deep sleep, growth hormone is released, which helps repair cells and tissues.
Most adults need 4–6 sleep cycles per night. Each cycle is about 90 minutes. 5 cycles = 7.5 hours is a good target.
Waking in the middle of a cycle can leave you groggy. Waking at the end of a cycle (light sleep) helps you feel refreshed.
It depends on your wake-up time. Working backwards in 90-minute cycles gives you optimal bedtimes.
During deep sleep, the body releases growth hormone for cell repair. Poor sleep is linked to dull skin, dark circles, and premature aging.
The circadian rhythm is your body's internal 24-hour clock that regulates sleep-wake cycles in response to light and darkness.