Sleep Hours Calculator
How much did you actually sleep?
Sleep Hours Calculator
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Calculated instantly
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What This Calculator Does
The Sleep Hours Calculator computes the total hours and minutes between your bedtime and wake time.
How It Works
Subtract bedtime from wake time. If wake is earlier in the day, add 24 hours to account for crossing midnight.
Example
Bedtime 11:30 PM, wake 7:00 AM = 7 hours 30 minutes.
Formula
Sleep = Wake - Bedtime (+ 24h if needed)Reading the Results
Sleep Hours
The whole hours of sleep.
Sleep Minutes
The remaining minutes of sleep.
Frequently Asked Questions
How many hours of sleep do adults need?
Most adults need 7-9 hours per night. Individual needs vary.
Does this include time to fall asleep?
This measures the time in bed. Actual sleep time is typically 10-20 minutes less.
Can I use this for naps?
Yes. Enter the nap start and end times to get the duration.