Stopwatch
Each lap shows its own time and the running total, with the fastest and slowest lap marked. It keeps counting after a refresh.
Laps
| Lap | Lap time | Total |
|---|
Press Lap while it runs and each split shows up here.
Screen and sound settings
Shortcuts: Space start/stop · L lap · R reset · F full screen
Free, no sign-up. Your timers, alarms and city list stay on this device.
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How this stopwatch keeps time
It measures from the start time
It does not add up ticks. It subtracts the moment you pressed Start from the current time, so switching tabs never loses time.
A refresh does not reset it
The start time and laps are saved in this browser. Reload or reopen the page and it keeps counting. Reset clears it.
Lap time and total side by side
Lap time is from the previous lap to this one; total is from Start until now. With two or more laps, the fastest and slowest are marked.
Take the table with you
Copy pastes as a table. Save CSV opens in Excel or Google Sheets and includes the raw milliseconds.
Questions people ask
What is the difference between lap time and total time?
Lap time is how long this lap took since the previous one; total is the time from Start to the moment you pressed Lap. See lap time vs split time for worked examples.
Does it keep counting in another tab?
Yes. It measures from the moment you pressed Start, so nothing is lost while the tab is hidden.
How do I keep my laps?
Copy pastes the table as it is, and Save CSV downloads a file for Excel or Google Sheets.
Are there keyboard shortcuts?
Space starts and stops, L records a lap and R resets.
How accurate is it?
The display shows hundredths of a second, but your reaction time and screen delay add to it. It does not replace official race timing equipment.
Guides
- Why online timers run late in a background tabWhy a web timer can ring up to a minute late in another tab or stop when a phone screen turns off, explained from Chrome's documentation, and how to avoid it.
- Daylight saving time 2026–2027: when clocks change and how time differences shiftWhen clocks change in 2026 and 2027 in the US, UK, EU, Australia and New Zealand, how the gaps between cities shift for a few weeks, and who stopped changing.
- Lap time vs split time on a stopwatchLap time is how long one lap took; split time is the total from the start to that point. How to read the same laps both ways and spot your fastest lap.
More time tools
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