Not Medical Advice
This tool provides general educational estimates based on typical sleep-cycle averages. It is not medical advice. If you have ongoing sleep problems, please consult a qualified doctor.
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Your Data Stays on Your Device
Everything you enter — sleep times, diary entries, schedules — is saved only in your browser's local storage. Nothing is uploaded to any server. We never see your data.
📈 Sleep Tracker
📈 Sleep Tracker — How to Use
What This Tool Does
The Sleep Tracker logs your nightly sleep and visualises weekly patterns — average duration, consistency, trend chart, and progress toward your goal.
When to Use It
Log every morning after waking up. Takes 15 seconds. Meaningful patterns appear after 1–2 weeks.
Fields Explained
Sleep Goal
Your target hours per night. The tracker shows how often you hit it.
Bedtime Target
What time you aim to be in bed. Reveals drift over time.
Daily Log
Actual bed time, wake time, and a quality rating for each night.
Reading the Result
Weekly average, current streak, consistency score, weekly sleep debt, a 30-day grid view, and a trend line chart.
Pro Tips
Rate quality on waking — before coffee and before checking your phone. That first feeling is the most accurate.
Look for patterns: poor quality after late nights, best sleep on exercise days.
Export as CSV to take to a doctor if you are concerned about chronic poor sleep.
Try a Sample
Sample scenario
A week of sleep log entries: 8-hour goal, mixed nightly results from a typical week.
Expected result: 5 nights logged · Average ~7h · Chart and heatmap showing patterns
📅 30-Day Sleep Log · Free · Private
Sleep Consistency Tracker
Log your sleep daily for 30 days. See your streak, weekly average, consistency score and a visual chart — all stored privately in your browser, never uploaded anywhere.
⚙️ Your Sleep Goal
📝 Log Today's Sleep
7/10
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Weekly Avg
0
Current Streak 🔥
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Consistency
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Week Debt
📅 30-Day Sleep Map
Green = goal met · Red = below goal · Empty = not logged · Click any day to view or edit
Sun
Mon
Tue
Wed
Thu
Fri
Sat
📈 Sleep Trend (Last 14 Days)
— Your sleep- - Goal
📊 This Week by Night
📄 Download as PDF
Free printable report — no email required.
💾 Export Your Log
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Sleep log data is stored entirely in your browser's localStorage. It is never sent to any server. Clearing your browser data will erase your log — use Export CSV or JSON to back it up regularly.