Stopwatch
Precise online stopwatch with lap timer functionality
How to Use
- âĸ Click "Start" to begin timing
- âĸ Click "Stop" to pause the stopwatch
- âĸ Click "Lap" while running to record a lap time
- âĸ Click "Reset" to clear the timer and all lap times
- âĸ Time format: Hours:Minutes:Seconds.Milliseconds
Privacy & Security
The stopwatch runs entirely in your browser with no data collection. No timing information, lap records, or usage data are stored or transmitted. Your time tracking remains completely private.
About the Online Stopwatch
Our free online stopwatch provides accurate time tracking with millisecond precision for any activity requiring time measurement. Whether timing workouts, sports events, cooking, studying, or work tasks, this stopwatch offers start, stop, pause, resume, and reset functions plus lap/split time recording. The large, easy-to-read display works perfectly on all devices, and the lap timer feature lets you track multiple intervals within a single timing session.
Key Features
Millisecond Precision
Track time down to 1/100th of a second accuracy
Lap Timer Function
Record multiple lap times during a single session
Large Display
Easy-to-read time display visible from distance
Start/Stop/Reset
Full control with pause and resume capabilities
Lap Time History
View all recorded laps with individual and cumulative times
Keyboard Shortcuts
Space to start/stop, R to reset for quick operation
Fullscreen Mode
Expand to fullscreen for maximum visibility
Mobile Optimized
Works perfectly on phones and tablets
How to Use the Stopwatch
Start Timer
Click Start button or press spacebar to begin timing
Record Laps
Click Lap button during timing to record split/lap times
Pause/Resume
Click Stop to pause, then Start again to resume timing
Reset
Click Reset button to clear timer and lap history
Stopwatch Tips and Uses
- Interval Training: Use lap timer for HIIT workouts - record each exercise interval
- Race Timing: Track multiple racers by recording lap time for each finisher
- Productivity: Time focus sessions with Pomodoro technique (25-min work intervals)
- Cooking: Track multiple cooking steps - lap times for each ingredient addition
- Scientific Experiments: Record precise timing for lab experiments and observations
- Public Speaking: Practice presentations and track section timing with lap feature
Frequently Asked Questions
How accurate is the online stopwatch?
Our stopwatch is accurate to approximately 10-50 milliseconds depending on your browser and device. While not suitable for Olympic timing, it's more than accurate enough for workouts, cooking, productivity, and general time tracking. The precision display shows to 1/100th second.
What's the difference between lap time and split time?
Lap time is the time for just that interval (time since last lap), while split time is cumulative time from the start. Our stopwatch shows both - each lap displays its individual duration plus the total elapsed time, helping you track both interval performance and overall timing.
Can I use keyboard shortcuts?
Yes! Press Space to start/stop the timer, R to reset, and L to record a lap. Keyboard shortcuts make the stopwatch faster to operate, especially useful during workouts or when you need hands-free control (if using external keyboard).
Does the stopwatch keep running if I close the browser?
No, the stopwatch stops when you close or navigate away from the page. For long-duration timing, keep the tab open. Some devices may pause background tabs to save power, so keep the tab active for continuous timing.
How many laps can I record?
You can record unlimited laps during a timing session. All laps are displayed in the history section showing lap number, lap time, and cumulative time. You can scroll through lap history to review any lap's timing.
Can I use this for Pomodoro technique timing?
Yes, though a dedicated countdown timer works better for Pomodoro. However, you can use the stopwatch and record laps at 25-minute intervals to track focus sessions. The lap history will show how many focus sessions you completed.
Why Use an Online Stopwatch?
Online stopwatches are accessible anywhere without installing apps, work across all devices, and offer features physical stopwatches often lack like lap history tracking and large displays. Perfect for athletes, coaches, trainers, teachers, cooks, and anyone needing accurate time tracking. The lap timer feature is particularly valuable for interval training, race timing, and productivity tracking where you need to measure multiple time segments within a single session. No batteries required, always available when you need it.