Free Online Stopwatch & Timer

Stopwatch

Counting up from zero

Digital Stopwatch for Events & Competitions

When you need to measure elapsed time rather than count down to zero, EventTimer's count-up mode is your digital stopwatch. Start the timer and it begins counting from 00:00, perfect for timing competition rounds, speech lengths, cooking challenges, or any activity where the duration isn't known in advance. The fullscreen display shows large, millisecond-precise digits that everyone in the room can read. Use the pause button to freeze the time, then resume when you're ready.

• Millisecond-precision timing
• Start, stop, pause, resume controls
• Large fullscreen display
• Works on any device

Stop Clock for Sports & Games

Whether you're timing a 100-meter dash at a school field day, tracking game rounds in a board-game tournament, or measuring reaction times in a science experiment, a reliable stop clock is essential. EventTimer's stopwatch starts instantly on click (or spacebar press), has no perceptible lag, and displays time in the format you need: minutes:seconds, minutes:seconds:milliseconds, or hours:minutes:seconds. It's the digital stop clock that's always in your pocket.

• Instant start with spacebar
• Multiple time formats
• Zero-lag precision
• Free and always available

Count-Up Timer for Work & Study

Sometimes you want to track how long you've been working rather than counting down to a deadline. The count-up timer shows your total elapsed time, helping you log billable hours, measure study sessions, or track deep work blocks. Start it when you sit down, glance at it periodically, and stop when you're done. It's a simple, effective way to build awareness of how you spend your time without the pressure of a ticking countdown.

• Track elapsed work time
• Log study and focus sessions
• No deadline pressure, just awareness
• Pair with countdown for Pomodoro cycles

Open the timer

Visit eventtimer.io. The timer loads instantly in your browser, on any device.

Set your duration

Type any duration or choose a preset. Switch between countdown, count-up, or clock mode.

Go fullscreen and start

Press F for fullscreen, Space to start. Share the link if your team needs to see it.

More tools

• Free Online Countdown Timer
• Free Fullscreen Countdown Timer
• Free Gym Timer & Fitness Interval Timer
• Free Online Game Timer & Count-Up Timer

Guides

• Precision Timing for Marathon Events
• Timing Fitness Events
• Timing Gaming Events

Quick-start presets

• Millisecond Precision Timer
• 30-Second HIIT Timer
• 5-Minute Speedrun Timer