Start with the right calculator

Choose the right sleep tool for tonight.

Use this page as the quiet front desk for Navi Sleep Tools. Pick what you need to decide now: bedtime, wake-up time, nap length, caffeine cutoff, travel recovery, or a wellness estimate.

Start with Sleep Calculator View all tools

Start here

Pick the closest situation. Every link goes straight to the working calculator, so the new page does not hide the original tools.

1I need a bedtime or wake-up windowUse the main sleep cycle calculator.Open 2I am tired todayUse nap timing first, then sleep debt if this is becoming a pattern.Open 3I want to protect tonight's sleepCheck caffeine cutoff and workout timing before evening.Open 4I am traveling or changing schedulesUse jet lag planning and melatonin timing as educational guides.Open

All sleep and wellness tools

The full tool set is still here. This directory now matches the visual style of the calculators around it.

Sleep Calculator Bedtime and wake-up windows Nap Calculator Short nap and full-cycle nap timing Caffeine Cutoff Last coffee time before bed Workout Timing Training windows that protect sleep Chronotype Quiz Lion, Bear, Wolf, or Dolphin Sleep Debt Weekly sleep deficit estimate Jet Lag Planner Travel recovery planning Melatonin Timing Educational timing guidance Kids Sleep Calculator Age-aware sleep schedule planning Water Intake Daily hydration estimate

Educational note: These calculators are planning aids, not medical diagnosis. If sleep problems are ongoing, severe, or connected with health symptoms, use them as preparation for a conversation with a qualified clinician.

New practical sleep guides

Problem-focused pages added for long-tail search, AI answer engines, and clearer reader paths.

Best bedtime by wake-up timeChoose a practical bedtime from your wake-up time using sleep cycle windows, wind-down time, and a realistic morning routine. Caffeine and sleep timing guidePlan a caffeine cutoff for better sleep using half-life, sensitivity, bedtime, dose size, and evening routine context. Sleep debt recovery planBuild a realistic sleep debt recovery plan with consistent wake time, earlier bedtime, short naps, and weekend guardrails. Morning grogginess checklistA practical checklist for morning grogginess covering sleep timing, light, caffeine, alarms, room conditions, and sleep debt.