Stopwatch

Understanding the Stopwatch

Online Stopwatch measures elapsed time with millisecond precision, featuring Lap Split recording, full-screen display mode, keyboard shortcuts, and exportable lap time tables.

How It Works

1. Click 'Start' (or press Spacebar) to start the timer.
2. Click 'Lap' to record intermediate split times and lap intervals.
3. Click 'Stop' to pause and review lap statistics.
4. Export lap times as a CSV file or reset the timer.

How to Get the Best Results

• Millisecond Accuracy: Uses high-resolution `performance.now()` browser timers for sub-millisecond tracking precision.
• Keyboard Controls: Use Spacebar to Start/Stop and 'L' key to record Laps without taking hands off the keyboard.
• Lap Analysis: Automatically highlights your fastest and slowest laps in the split history table.

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Frequently Asked Questions

How precise is the timing?

It tracks time to the hundredth of a second, which is more than precise enough for typical workout, cooking, or presentation timing needs.

Can I record multiple laps in one session?

Yes — click Lap as many times as needed during a run to capture each split time, all while the overall stopwatch keeps running continuously.

Does the stopwatch keep running if I switch to another tab?

Yes — the timer continues running in the background even if you switch tabs, so you won't lose your elapsed time by checking something else briefly.

Can I reset just the lap times without resetting the whole timer?

The reset control clears both the running time and recorded laps together, so for a completely fresh start, use reset; to keep timing continuously while just noting a split, use lap instead.

Can I use this for interval training with multiple rounds?

Yes — use the lap function to mark the end of each interval while keeping the stopwatch running continuously through your whole session.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). Stopwatch [Software]. https://nexlove.org/tools/stopwatch.html

“Stopwatch.” NexLove.org, 2026, nexlove.org/tools/stopwatch.html.

NexLove.org (2026) Stopwatch. Available at: https://nexlove.org/tools/stopwatch.html (Accessed: 2026).

@misc{nexlove_stopwatch,
  title = {Stopwatch},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/stopwatch.html}
}

Embed This Tool

Add the live Stopwatch tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/stopwatch.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="Stopwatch — NexLove.org" loading="lazy"></iframe>