Online Stopwatch
Count elapsed time to 1/100 of a second
Features
Precise measurement to 1/100 second
Always shows minutes, seconds, and 1/100 seconds in large digits
Supports recording lap times
Review both lap splits and cumulative totals in a list while measuring
Keeps the latest 20 laps
From the 21st lap on, the oldest are automatically dropped
No install, starts instantly
Just open the page and measure with no extra software
How to use
Start measuring
Press the start button to begin counting elapsed time from zero
Record laps
Press the lap button while measuring to add the split time and total to the history
Pause measuring
Press the stop button to stop measuring and keep the time at that moment
Reset the measurement
Press the reset button to return the elapsed time and lap history all to zero
Use cases
Time sports
Record running or swimming lap times by segment with the lap feature
Manage study and work time
Measure focus time or Pomodoro sessions to visualize study and work efficiency
Speed up cooking
Time boiling and steeping to the second to finish dishes exactly as the recipe says
Rehearse presentations
Check before the real thing whether you fit within your time, marking segments with laps
Record progress of experiments and observations
Record elapsed time at fixed intervals with laps for science experiments and observations
Basic Knowledge
Lap Time and Split Time
Lap time is the elapsed time from the previous measurement point, while split time is the cumulative time from the start. Use lap for records of each track lap, and split for the total elapsed time at the point of passage.
Difference Between Stopwatch and Timer
A stopwatch is a tool that measures elapsed time by counting up from zero, while a timer is a tool that counts down from a preset duration. Use the former when you want to know how much time has passed, and the latter when you want to mark time in intervals.
Safety and privacy
Runs entirely in your browser
Your input data is processed only within your browser and is never sent externally.
Processing only in your browser
time measurement is processed entirely within your browser, and input data is not sent to any server.
Communications encrypted with HTTPS
Page loading is also encrypted by TLS, and content cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
No automatic saving of results
the measured time and lap history and input suggestions are not stored on the server.
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