Free Online Stopwatch & Countdown Timer Online
Precise stopwatch and countdown timer with laps and audible alarms. Simple, full-screen ready.
Quick Navigation
Jump to specific sections of the Online Stopwatch & Countdown Timer guide.
Key Features
Powerful capabilities of our online stopwatch & countdown timer.
Dual Mode
Switch between Stopwatch and Timer tabs.
Laps
Record split times in stopwatch mode.
Custom Timer
Set hours, minutes, and seconds for countdowns.
Audio Alarm
Beeps when time is up.
Fullscreen
Great for classrooms, workouts, or presentations.
How to use Online Stopwatch & Countdown Timer
Select Mode
Choose Stopwatch (count up) or Timer (count down).
Start/Stop
Control time with large, accessible buttons.
Lap
Hit Lap to record a checkpoint without stopping.
Reset
Clear the time to start over.
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Frequently Asked Questions about Online Stopwatch & Countdown Timer
Does it work offline?
Yes, once loaded, it works without internet.
Is it accurate?
Yes, it uses your browser's high-precision time APIs.
Why use Toolboxed.online?
Toolboxed is a curated suite of high-performance utility tools designed for modern professionals. Unlike other tool sites, we prioritize privacy, speed, and zero distractions. None of your data ever leaves your browser, and we never show annoying ads.