Stopwatch & Timer

Precise stopwatch and countdown timer

Mode

Controls

Stopwatch

00:00.00

Features

• Precise stopwatch with centiseconds
• Save and compare lap times
• Start, pause and reset
• Ideal for sports, training and time measurement

API Endpoint

You can also use the stopwatch via an API:

GET /api/tools/stopwatch

Query Parameters:

action (required): start, stop, reset, lap
mode (optional): stopwatch, timer (default: stopwatch)
currentTime (optional): Current time in milliseconds (default: 0)
isRunning (optional): true/false (default: false)
laps (optional): Comma-separated lap times in milliseconds

Examples:

/api/tools/stopwatch?action=start&mode=stopwatch&currentTime=0&isRunning=false/api/tools/stopwatch?action=lap&mode=stopwatch&currentTime=5000&isRunning=true&laps=2000,5000/api/tools/stopwatch?action=reset&mode=stopwatch

POST /api/tools/stopwatch

Request Body (JSON):

{
  "action": "start",
  "mode": "stopwatch", // or "timer"
  "currentTime": 0,
  "isRunning": false,
  "laps": [],
  "timerMinutes": 5, // only for timer mode
  "timerSeconds": 30 // only for timer mode
}

Response:

{
  "success": true,
  "data": {
    "time": 5000,
    "isRunning": true,
    "mode": "stopwatch",
    "laps": [2000, 5000],
    "formattedTime": "00:05.00",
    "formattedLaps": ["00:02.00", "00:03.00"]
  }
}