Online Timer
Minimal timer with milliseconds, start, pause, and stop.
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Minimal timer with milliseconds, start, pause, and stop.
A clean, distraction-free online timer with start, pause, and stop controls. It tracks elapsed time down to the millisecond and automatically records your previous session duration for easy reference.
Online Timer is a free, minimalist stopwatch that runs entirely in your browser. There is nothing to install, no account to create, and no ads to dismiss. It displays hours, minutes, seconds, and milliseconds in a large, easy-to-read format. Three simple buttons let you start, pause, and stop the timer. When you stop a session, the tool saves the elapsed time and displays it as your previous recorded duration so you can compare sessions at a glance. The interface is intentionally stripped down to keep your focus on the task at hand.
Click Start to begin the timer. The display immediately begins counting upward in real time with millisecond precision. Press Pause to freeze the count without losing your progress; click Start again to resume from where you left off. When you click Stop, the timer records the total elapsed time, displays it as your previous session record, and resets the display to zero. You can then begin a new session whenever you are ready. The tool works on any modern browser across desktops, tablets, and mobile devices.
Yes. The Online Timer is entirely free with no registration, subscription, or software download required. Open the page in any modern browser and start timing immediately. It works on desktops, laptops, tablets, and smartphones without restrictions or hidden paywalls. Because the tool runs entirely in your browser, there are no server costs passed on to you and no premium tier to unlock additional features.
The timer uses your browser's high-resolution performance timing API, which provides sub-millisecond precision for everyday purposes. This makes it reliable for tracking work sessions, exercise intervals, cooking steps, or classroom activities. For highly controlled scientific experiments requiring synchronized, hardware-level accuracy, a dedicated lab timer is more appropriate. For the vast majority of productivity and personal timing tasks, the browser precision is more than sufficient and comparable to a standard digital stopwatch.
The timer continues to count elapsed time based on real wall-clock time, so switching tabs or minimizing the window does not cause it to lose track. However, some browsers throttle JavaScript timers in background tabs to save resources, which can cause the display update to lag slightly. The underlying elapsed calculation remains accurate because it is based on timestamps rather than intervals. Closing or refreshing the tab will end the session and reset the timer.