How it works
Duration = wake-up time − bedtime. When wake-up is earlier on the clock, it is treated as occurring the following day.
SourcesCDC sleep information
Sleep and recovery
Sleep Duration Calculator
Enter bedtime and wake-up time to measure the time interval. This calculates time in bed, not sleep quality.
Your result8 hr 0 min
Elapsed time between bedtime and wake-up.
- Duration in hours
- 8 h
- Total minutes
- 480
Understanding your result
The result measures the scheduled interval between the two times. Time needed to fall asleep and periods awake during the night are not subtracted, so actual sleep may be shorter.
Last verified:
03FAQ
Frequently asked questions
Yes. A wake-up time earlier than bedtime is automatically treated as the following day.