Stopwatch
25:00
Stopwatch
25:00
Counts upwards with hundredths of a second. The hands move as you would expect on a real stopwatch: the thin hand sweeps the seconds, the thick one tracks the minutes.
Every time you press Lap the current time is stored twice: the split, which is how long that lap took on its own, and the total elapsed since you started. That way you can compare a runner's first lap against their last without doing the subtraction in your head.
Cheap web stopwatches count by adding up intervals, and every interval loses a few milliseconds. Over ten minutes that becomes several seconds of error. This one measures against the browser's high-resolution clock, the same one used for performance measurement, so it stays accurate even in long sessions or in a background tab.
There is no practical limit. Past one hour the display switches automatically to hours, minutes and seconds.
No. Reloading clears everything. Copy the times before closing if you need to keep them.
In practice, yes. A chronograph is the watchmaking name for the complication that lets a watch act as a stopwatch. On the web the two words describe the same tool.