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Bedtime calculator
Calculate when to go to bed for your desired amount of sleep.
Your result
Complete the fields and calculate.
Example
Bedtime calculator
For eight hours of sleep, 15 minutes to fall asleep and a 7:00 a.m. wake-up, go to bed at 10:45 p.m.
FAQ
Frequently asked questions
How accurate is the result?+
The calculator uses the stated formula and only rounds the display. Accuracy depends on your inputs.
Is this calculator really free?+
Yes. Use it as often as you like without an account or registration.
Are my entries stored?+
The calculation runs directly in your browser. Calculator values are stored locally only when you explicitly add a result to “My results”. Favourites and history also remain locally on your device.