Countdown Timer
Set a target date and time above to start the countdown.
Countdown reached.
A countdown timer answers one question continuously instead of once: not just “how far away is this date” at the moment you check, but a live, ticking answer that stays correct for as long as you keep watching. Set a target date and time, and this tool breaks the remaining time down into days, hours, minutes, and seconds, updating on its own — no need to reload the page or recalculate by hand as time passes.
The target date and time is interpreted in your browser’s own local timezone, the same convention this site’s other date tools (Unix Timestamp Converter, Timezone Converter) already use for a local datetime field — there’s no separate timezone picker to configure. If you’re setting a target for an event happening somewhere else, pick the date and time as it will occur in your local time, the same way you’d read it off your own clock.
The link you can copy is the whole countdown, not just a description of it. The target date/time and an optional label live directly in the page’s URL — nothing is saved to a server or a database. Anyone who opens a link you share sees the identical countdown, computed independently in their own browser the moment the page loads. This does mean the target is visible to anyone with the link, by design: a countdown is meant to be shared, the same reasoning this site’s QR Code Generator already applies to its own output.
Ticking is efficient, not naive. Under about an hour remaining, the display updates every real second; further out, it redraws roughly every 30 seconds instead, since a days-scale countdown redrawing every second would only ever change its least significant digit — wasted work for no visible benefit. Backgrounding the browser tab and returning to it never causes a jump or drift: the remaining time is always recalculated fresh from the real current time at that instant, not assumed from how many ticks a hidden tab might have missed.
Reaching zero is a clear, deliberate state, not a countdown that quietly goes negative or blank — a “Countdown reached” note appears and the ticking stops. A target already in the past (including one loaded straight from an old shared link) shows this same state immediately on load, since a countdown that’s already happened is a valid thing to look at, not an error to reject.
Examples
- A product launch or release date — set the target to the exact moment, add a label like "Launch Day," and share the resulting link with your team so everyone sees the same live countdown, each counting down in their own local time from the same real target instant.
- A personal milestone or event — a wedding, a trip, an exam, a deadline. Set the date and time once; the days/hours/minutes/seconds breakdown updates on its own for as long as you keep the tab open, no need to keep recalculating "how long until then" by hand.
- Checking a target that's already passed — set a date and time in the past (or open an old shared link) to see the tool's "Countdown reached" state directly, rather than a negative or nonsensical number.