Stopwatch tools · Work & practice
Time Study Stopwatch
Measure the steps. Understand the whole.
Ready when you are
Current lap · 00:00.00
Ready when you are.
Reset this session and remove its recorded marks? Export first if you want to keep them.
Your results
Completed marks appear here. Add a note to remember the details.
A fresh start. Your first mark goes here.
How to use the time study stopwatch
Enter the repeating steps of a process, one per line, and apply the sequence. Start the watch and press Finish step at each boundary. The next step is selected automatically, with a new cycle after the last step.
Summaries show sample count and mean for each included step. Completed cycle totals require every step in that cycle to be present and included. Uncheck Include for an interrupted or invalid observation; the row and its note stay in the export. Decimal minutes divide seconds by 60, so 90 seconds is 1.5 minutes.
Does this calculate a standard allowed time?
No. It reports observed times and descriptive averages. It does not apply performance ratings, allowances, staffing recommendations or statistical sample-size claims. Keep notes about conditions and interruptions when comparing sessions.
How accurate is the stopwatch?
The display can show hundredths of a second, but human reaction and browser input latency affect a manual measurement. Live timing uses a monotonic clock, so changing the device time does not change an open session. After a refresh, recovery uses saved device timestamps. Device sleep and a changed clock can affect that recovery. Keep this page and device awake for dependable timing.
Where are my results saved?
Only in this browser on this device, with no account required. Use one tab per tool to avoid overwriting the same saved session. Export CSV before clearing local settings. Each session can hold up to 500 marks and seven days of active elapsed time. Live updates stop while paused; no stopwatch readings are sent to our server.