Timing tool
Run a stopwatch with lap tracking and clear session history
Start, stop, resume, reset, and capture lap times without leaving the page.
Stopwatch controls
Use this for timing runs, shop tasks, workout intervals, or process checks.
00:00.00
Ready
Session summary
Elapsed time 00:00.00
Lap count 0
Fastest lap -
Slowest lap -
Lap log
- No laps yet.
Lap histogram (split time)
No laps yet.
Notes
Use this space for project notes before saving as PDF.
Disclaimer: Use calculations at your own risk. For critical applications, verify results against your governing standards/specifications.
How it works
Startbegins timing from zero or resumes after a pause.Laprecords the current elapsed time and the split since the previous lap.Resetclears the current session and lap history.
Good uses
- Timing setup and cycle checks on repeated tasks
- Recording workout intervals or practice rounds
- Tracking quick process tests while keeping visible lap notes
FAQ
Does it keep running if I switch tabs?
Yes. The stopwatch is based on timestamps, so it continues tracking elapsed time even if rendering slows in the background.
What gets copied in the session summary?
The current elapsed time, lap count, fastest and slowest lap, plus each recorded lap with cumulative and split times.
Notes
- Display format automatically expands from
MM:SS.CStoHH:MM:SS.CSfor longer sessions. - Lap timing is stored only in the current browser session.