About the Average Sleep Calculator
Average nightly sleep from your logged hours, with consistency (standard deviation) and weekly total.
Also known as: mean sleep hours, sleep average tracker.
How to use this calculator
- Enter night 1, night 2, night 3, night 4 and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Average = total hours ÷ nights
Worked example
Using the values pre-filled in the calculator above:
- Night 1 = 7 h
- Night 2 = 6.5 h
- Night 3 = 8 h
- Night 4 = 7.5 h
- Night 5 = 6 h
- Night 6 = 9 h
- Night 7 = 8 h
the calculator returns:
- Average sleep: 7.43 hours
- Weekly total: 52 hours
- Consistency (SD): 1.02 hours
- Shortest / longest: 6 h / 9 h