Stopwatch

A Simple, Precise Online Stopwatch

No app download, no ads blocking the screen, no permissions to accept. This free online stopwatch starts with a single click and gives you millisecond precision with lap timing built in. Keep it open in a browser tab and use it whenever you need to track time.

Features at a Glance

• Millisecond display: Time is shown as hours, minutes, seconds, and milliseconds for precise measurement
• Lap and split tracking: Record as many laps as you need without stopping the main timer
• Persistent timing: Switching tabs or minimizing the browser does not affect the elapsed time
• Keyboard shortcuts: Start, stop, and record laps without reaching for the mouse
• Clean interface: A large, readable display that works well on screens of any size

Everyday Uses for a Stopwatch

Exercise and workouts: Time your runs, rest periods between sets, plank holds, or circuit training intervals. The lap feature is especially useful for tracking individual set durations within a longer session.

Cooking: Many recipes require precise timing for steps like boiling, searing, or resting. Open the stopwatch in a tab on your phone or laptop and time each stage without fumbling with a physical kitchen timer.

Presentations and speeches: Rehearse a talk with the stopwatch running to make sure you stay within your allotted time. Use laps to mark section transitions and identify parts that run long.

Productivity techniques: Methods like the Pomodoro Technique rely on timed work intervals. Use the stopwatch to time your focus sessions and breaks.

Games and competitions: Time board game turns, trivia rounds, or any friendly competition where fairness depends on equal time limits.

Lap Timing Explained

When you press the lap button, two values are recorded:

Column	Meaning
Lap time	Duration since the previous lap (or since start for the first lap)
Split time	Total elapsed time from the start

This dual recording lets you analyze individual segments and overall performance at the same time. For example, a runner timing quarter-mile laps can see both the pace of each lap and the total race time.

Why a Browser Stopwatch?

Your phone has a built-in stopwatch, but opening it means unlocking the device, finding the app, and navigating to the right screen. A browser stopwatch is always one click away if you already work on a computer. It also displays on a larger screen, making it easier to read from across a room during workouts or presentations.

Keyboard Controls

Key	Action
Space	Start or stop
L	Record a lap
R	Reset

Keyboard shortcuts make the stopwatch faster to operate, especially when your hands are busy or you need split-second timing.