Stopwatch

How it works

Click Start to begin timing. The elapsed display updates roughly ten times per second, computed from absolute timestamps so it stays accurate. Click Lap to record a split without stopping, Stop to pause, and Reset to clear everything.

Benefits

• Timestamp-based accuracy that resists tab-switch drift
• Unlimited pause and resume without losing elapsed time
• Lap tracking with per-lap and cumulative totals
• No account, install, or upload required

Use cases

• Time workouts, runs, or interval training sets
• Track how long a task or focus session takes
• Record race or practice splits with the lap feature
• Time presentations, speeches, or meeting segments

Best practices

• Use Lap instead of Stop when you want to keep the clock running
• Reset before starting a new, unrelated timing session
• Copy or download lap results before resetting if you need a record
• Keep the browser tab open for the most reliable display updates

Common mistakes

• Clicking Stop instead of Lap when you meant to keep timing
• Resetting before saving lap results you wanted to keep
• Expecting laps to be editable after they are recorded
• Assuming the stopwatch persists across a full page reload

Privacy

Stopwatch timing runs entirely in your browser using JavaScript timers. ToolHub does not receive, log, or store your elapsed time or lap data.