Online Stopwatch
Online Stopwatch — Shared, Synced by Link
Most online stopwatches live and die on one screen. This one is shareable: press start, send the link, and everyone who opens it sees the same elapsed time ticking up — the start instant travels inside the link itself.
00servers to run this
Anyone opening your link right now sees exactly this.
Change the countdown
The board above is in stopwatch (count-up) mode — switch direction here if you wanted a countdown instead.
Common questions
- Your phone's stopwatch exists only on your phone. This one encodes its start instant in a link, so any device that opens the link shows the identical elapsed time — useful for timing anything a group is watching together.
- Effectively yes — nothing is actually "running" anywhere. The link records when the stopwatch started, so reopening it later shows the correct elapsed time, as if it had been running the whole time.
- No — this is deliberately a simple shared stopwatch. For lap timing you'd want a single-device sports stopwatch; this tool's job is showing one agreed elapsed time on many screens.