Online Stopwatch - Tamil Numerals

Input: Lap 1: 1:23.456, Lap 2: 1:25.789, Lap 3: 1:22.123

Result: Total: 4:11.368. Fastest lap: Lap 3 (1:22.123). Average lap: 1:23.789.

Can the stopwatch record lap times?

Yes. Press the lap button during timing to record multiple lap times. All laps are displayed in a list below the stopwatch, showing each lap time and the total elapsed time at each lap point. This is useful for tracking intervals during workouts, measuring segments of a task, or comparing performance across repetitions. You can record an unlimited number of laps in a single session.

Does the stopwatch work in the background?

The stopwatch runs accurately as long as the browser tab is active. For background timing on mobile, consider installing the app as a PWA from your browser's menu. As a PWA, the stopwatch can continue running when you switch to other apps, though iOS and Android both limit background JavaScript execution to preserve battery.

Why does my stopwatch drift compared to my phone's clock?

Browser-based timers use the device's system clock, which is typically accurate to within milliseconds. However, if the browser tab is backgrounded, most browsers throttle JavaScript timers to save power, causing the stopwatch to lose time. On desktop, the tab switch is usually fine; on mobile, the throttling is more aggressive. Installing as a PWA can help maintain accuracy in the background. The stopwatch compensates for drift by using timestamp-based timing (comparing the current system clock to the start time) rather than counting intervals, so it remains accurate even if the display update is throttled.

Can I use the stopwatch as a countdown timer?

Yes. The tool includes a countdown timer mode alongside the stopwatch. Set a target time and the timer counts down to zero, then alerts you with a sound and visual notification. This is useful for Pomodoro technique work sessions, cooking timers, exercise intervals, or any scenario where you need a reminder after a set duration rather than measuring elapsed time.

How precise is the stopwatch?

The stopwatch displays time with millisecond precision (e.g., 00:01:23.456). The underlying timing uses the browser's performance API, which provides sub-millisecond accuracy on most modern browsers. However, the displayed precision depends on how frequently the browser updates the display — typically every 10-50 milliseconds. For most practical purposes (workouts, cooking, task timing), this precision is more than sufficient.

Does the stopwatch work without an internet connection?

Yes. Once the page has loaded, the stopwatch runs entirely in your browser and does not require an internet connection. You can start it, record laps, and switch between stopwatch and countdown timer modes offline. If you install it as a PWA, it works fully offline from your home screen.

Are Tamil numerals the same as other South Indian numeral systems?

No. While Tamil, Kannada, Malayalam, and Telugu all share a Dravidian script family, each has distinct numeral glyph forms. Tamil numerals (௦–௯) look different from Malayalam (൦–൯) or Kannada (೦–೯) numerals, so use the specific numeral mode for your language.