Free Online Stopwatch
Measure elapsed time instantly with a browser-based stopwatch. It is useful for workouts, study sessions, experiments, cooking, presentations, games, and everyday timing tasks.
Design & Utility Tools
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Free Online Tool
Online Stopwatch
Use this free online stopwatch to measure elapsed time with hours, minutes, seconds, and milliseconds.
Free to Use
No Sign-Up
Browser-Based
Online Tool
Online Stopwatch
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Online Stopwatch
Need a quick and simple way to measure elapsed time? This free online stopwatch runs directly in your web browser and displays hours, minutes, seconds, and milliseconds. No download or installation is required.
How to Use the Online Stopwatch
Press Start to begin measuring time. Press Stop when you want to pause the stopwatch, then press Start again to continue. Use Reset to return the stopwatch to zero and start a new measurement.
Millisecond Display
The stopwatch displays milliseconds alongside hours, minutes, and seconds, making it useful when you need more detailed elapsed-time measurements.
Works on Mobile and Desktop
Use the stopwatch from a phone, tablet, laptop, or desktop browser. The responsive interface is designed to remain easy to use on different screen sizes.
What Is a Stopwatch?
A stopwatch is a timekeeping tool used to measure elapsed time from a starting point to a stopping point. Unlike a countdown timer, a stopwatch counts upward as time passes.
What Can You Use a Stopwatch For?
- Timing workouts, runs, walks, and exercise intervals.
- Measuring study sessions and focused work periods.
- Timing cooking, experiments, demonstrations, or presentations.
- Measuring reaction times and simple activities.
- Timing games, challenges, races, and practice sessions.
- Tracking how long an everyday task takes.
Online Stopwatch FAQ
What is an online stopwatch?
An online stopwatch is a browser-based tool that measures elapsed time without requiring a physical stopwatch or software installation.
Is this online stopwatch free?
Yes. You can use the stopwatch directly in your browser without purchasing or installing a separate application.
How do I start the stopwatch?
Click the Start button to begin measuring elapsed time.
How do I stop the stopwatch?
Click Stop to pause the current elapsed-time measurement.
Can I continue after stopping?
Yes. Press Start again to continue from the elapsed time where you stopped.
How do I reset the stopwatch?
Click Reset to return the stopwatch to zero.
Does the stopwatch show milliseconds?
Yes. The display includes milliseconds in addition to hours, minutes, and seconds.
Can I use this stopwatch on my phone?
Yes. The stopwatch is designed to work in modern mobile and desktop web browsers.
Do I need to download an app?
No. The stopwatch runs directly in your web browser.
Is an online stopwatch the same as a countdown timer?
No. A stopwatch counts upward to measure elapsed time, while a countdown timer counts down toward zero.
Can I use this stopwatch for workouts?
Yes. It can be used to measure exercise duration, running time, study intervals, and other activities.
Does the stopwatch work without a separate timer device?
Yes. Your browser provides everything needed to operate this browser-based stopwatch.
What is the difference between a stopwatch and a timer?
A stopwatch measures how much time has passed, while a timer is generally used to count toward a specified duration or deadline.
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