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Free online timer & stopwatch with millisecond precision
Whether you're cooking dinner, timing a workout interval, running a quick presentation, or just need a stopwatch for a sports drill, this dual-purpose tool handles both jobs in your browser — no app to install, no battery drain on your phone, just a clean clock that does its job. Switch between Timer (counts down from a set duration) and Stopwatch (counts up from zero) with a single tap.
The timer plays a sound when it finishes and shows a flashing visual alert so you don't miss it even with the tab in the background. The stopwatch supports lap times — tap Lap to record splits without stopping the main clock — perfect for tracking running intervals, repeated workouts or any timed sets. Everything runs locally with millisecond precision, so it stays accurate even on long runs.