Stopwatch

Free Online Stopwatch with Lap Timer

Our online stopwatch provides high-precision timing with millisecond accuracy, making it perfect for sports, workouts, racing, and any activity where accurate time tracking is essential. With lap timer functionality, you can record multiple split times and analyze your performance.

How to Use the Stopwatch

1. Start timing: Click the Start button to begin the stopwatch
2. Record laps: Click the Lap button to record split times while the timer is running
3. Stop timing: Click the Stop button to pause the stopwatch
4. Reset: Click Reset to clear the timer and all recorded laps
5. Clear laps: Use the Clear Laps button to remove all lap times while keeping the main timer

Features

• High-precision timing: Accurate to milliseconds using requestAnimationFrame for smooth updates
• Lap timer: Record unlimited lap and split times during your session
• Fastest/Slowest lap tracking: Automatically highlights your best and worst lap times
• Large display: Easy-to-read time display with hours, minutes, seconds, and milliseconds
• Lap statistics: View individual lap times and cumulative total times for each lap
• Mobile responsive: Works perfectly on phones, tablets, and desktop computers
• Dark mode compatible: Seamless experience in both light and dark themes
• No installation required: Works directly in your browser without downloads

Perfect For

Our stopwatch is ideal for a wide range of timing activities and use cases:

• Running and jogging: Track your lap times around a track or during interval training
• Swimming: Time your laps and analyze your split times
• Cycling: Monitor your performance on different segments of your ride
• Racing: Track race times and compare lap performance
• Workouts and fitness: Time exercise intervals, rest periods, and circuit training
• Sports coaching: Measure athlete performance and track improvements
• Gaming speedruns: Track completion times and segment splits
• Cooking and baking: Time multiple dishes or cooking stages
• Study sessions: Track focused work periods and measure productivity
• General time tracking: Measure duration of any task or activity

Understanding Lap Times

When you record a lap, the stopwatch displays two important measurements:

• Lap Time: The time elapsed since the previous lap (or start if it's the first lap)
• Total Time: The cumulative time from when you started the stopwatch

The fastest and slowest laps are automatically highlighted in green and red respectively, making it easy to identify your best and worst performances at a glance.

Tips for Accurate Timing

• Keep your browser tab active for the most accurate timing results
• Use keyboard shortcuts if available for faster lap recording
• Clear old laps before starting a new timing session to avoid confusion
• Review your lap times to identify patterns and areas for improvement
• Use the pause feature to take breaks without losing your timing data

Privacy and Offline Use

This stopwatch runs entirely in your web browser using JavaScript. No timing data is sent to any server, and all lap times are stored only in your browser's memory. Your stopwatch data is completely private and disappears when you close the page or reset the timer. After the page loads, the stopwatch continues to work even without an internet connection.

Stopwatch vs Timer

While both measure time, a stopwatch and a countdown timer serve different purposes:

• Stopwatch: Counts up from zero to measure how long something takes
• Timer: Counts down from a set time to zero and alerts when time is up

Use a stopwatch when you need to measure elapsed time or track performance. Use a countdown timer when you need to be alerted after a specific duration.

Start Timing Now

Whether you're training for a marathon, timing your cooking, or tracking any activity that requires precise time measurement, our free online stopwatch provides all the features you need. No registration, no downloads, no hassle - just click Start and begin timing.