Baby Sleep Log
Log sleep and naps with saved timers or manual start and end times. Review daily sleep totals, including sleep that crosses midnight.
How can I log sleep that crosses midnight?
Record the full start and end of a sleep interval, or start a timer and save it after waking. The diary keeps the whole interval and counts only the part within each selected day in daily totals. Times are saved as instants so elapsed durations account for daylight-saving changes.
Care records save in this browser. Caregivers can use this device or exchange a saved handover. There is no live cross-device sync. Download a backup before clearing site data or changing devices.
Loading saved care…
Three simple steps
How to use Baby Sleep Log
Select a child and record sleep or start a timer.
Stop the timer and review its start, end and nap label.
Check the selected day’s totals and correct earlier entries.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
Up to 20 children and 50,000 entries within a 30 MB backup. Completed intervals are limited to 24 hours; overlapping records of the same activity for one child are rejected. Timers are stored locally and do not send alarms. This is a record keeper without care recommendations or live cross-device synchronization.
Records stay in this browser. Timers send no alarms. The tool does not assess care needs or provide feeding, sleep or tummy-time recommendations. Save a backup before clearing browser data.