Tools / Stopwatch

Stopwatch

Precise stopwatch with lap times. Track intervals, compare lap performance, and export your times.

5,200 AI Tokens Used
Jan 31, 2026 Created
timeproductivity
Categories
00:00.00

Track time with precision. Add lap times to compare intervals.

How This Tool Was Built

This tool was created entirely by AI. Here's the exact prompt used to generate it:

Prompt Used 
Create a Stopwatch tool with these features:

1. Large time display showing hours:minutes:seconds.centiseconds
2. Start/Pause/Resume button
3. Lap button to record split times
4. Reset button
5. Lap times list showing:
   - Lap number
   - Lap time (time since last lap)
   - Total elapsed time
6. Highlight best and worst lap times in different colors
7. Use setInterval with Date.now() for accuracy
8. Clean, dark display like a digital stopwatch

Make it precise and easy to use with blue as the accent color.
AI
Claude AI Model
#
5,200 Tokens Used
100%
AI-Generated Code Origin