Time Tracker
Track billable hours with a start/stop timer, project tags, and automatic time calculation. Generate simple timesheets for your work.
Timer
Today's Total
0h 0mTime Entries
No time entries yet
By Project
No data yet
Your time log stays in this browser
Every entry is saved automatically on this device — no account needed. Come back tomorrow and yesterday's hours are still here, with per-day and per-project totals.
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Tag Your Project
Enter a project tag before starting the timer. This helps you categorize and report on time later.
Start & Stop
Click Start to begin timing your work. Click Stop when done. The elapsed time is displayed live.
Review & Export
Check the daily summary for total hours. Use Export to download a text summary of your time entries.
About This Tool
Track billable hours with a start/stop timer, project tags, and automatic time calculation. Generate simple timesheets for your work.
Track time spent on projects with a simple start/stop timer. Tag each session with a project name, review your time entries, see daily totals, and export a summary of your work hours.
All data is stored locally in your browser and never uploaded to any server. No registration required.
Project Tagging
Label each time entry with a project name so you can see exactly where your hours go.
Start/Stop Timer
A simple one-click timer that runs while you work and stops when you are done, with live elapsed time display.
Export Summary
Download a text summary of all your time entries for the day, ready to attach to reports or invoices.
Learn More
Freelance Billing — Track billable hours per client and export a time log to support your invoices.
Project Management — See how many hours each project consumes with the built-in project breakdown chart.
Daily Time Tracking — Log your work sessions throughout the day and review total hours at a glance.
Frequently Asked Questions
Authoritative Sources
Standards and research behind this tool, from official specifications to peer-reviewed studies.
Precise timing matters more than most people assume: lab experiments, cooking, sports intervals, and speech practice all depend on reliable elapsed time. The stopwatch and countdown tools on this site use the browser's High Resolution Time API standardized by the W3C — the same monotonic-clock specification that professional timing software builds on. For calendar math such as days between dates, the calculations follow the Gregorian calendar rules maintained by metrology institutes such as NIST, the US authority for official timekeeping.