21:45
6 cycles · 9h 00m
Calculate suggested bedtimes or wake times using 90-minute sleep cycles and optional fall-asleep time.
21:45
6 cycles · 9h 00m
23:15
5 cycles · 7h 30m
00:45
4 cycles · 6h 00m
02:15
3 cycles · 4h 30m
Adults often choose 5–6 cycles. Actual sleep cycles vary by person.
Calculate suggested bedtimes or wake times using 90-minute sleep cycles and optional fall-asleep time.
Files and text are processed in your browser and are not uploaded to the server.
Health use notice
This tool is for general reference only and does not replace medical, nutrition, diagnostic, or treatment advice. For health decisions, confirm the result with a clinician, registered specialist, or official guidance.
Save this result, compare previous runs, or share a report.
Keep exploring
Jump into related tools from the same category and popular picks across Gogotem.
Calculate per-serving calories, protein, carbs, fat, macro calories, and simple nutrition label totals.
Check body máss index and healthy weight range instantly.
Estimate BMR, maintenance calories, and practical calorie targets.
Estimate body fat percentage and review an ideal weight range.
Estimate basal metabolic rate and daily maintenance calories from body data and activity level.
Compare classic ideal-weight formulas and a healthy BMI range from height and sex.