Sleep Calculator & White Noise
Calculate ideal sleep times and enjoy relaxing white noise.
When should I wake up?
Select your bedtime to see results
When should I go to bed?
Select your wake up time to see results
White Noise Player
Not playing
White noise should continue playing even if your device screen locks.
Add to Home Screen / Favorites
To add to your favorites, press CTRL+D (Windows) or CMD+D (Mac).
© 2025 Sleep Assistant. All rights reserved.
Calculations based on an average 90-minute sleep cycle.