countdown
live countdown to any future date — shareable link below
── about this calculator ──
A countdown timer is a small motivator. People use it for vacations, exam dates, weddings, product launches, contract expirations, birthdays, retirement, sports finals, the next eclipse, and the slow march toward Friday at 5pm. This one ticks once per second, lives entirely in your browser, and produces a shareable link so you can drop it in a Slack channel or text it to a friend without anyone needing to create an account.
The link encodes both the target date and the event label, so when the recipient opens it the countdown is already configured. After the target moment passes, the counter flips to a "time since" mode automatically — useful for tracking "days since the incident" or anniversary tallies.
── frequently asked ──
- › How accurate is the countdown?
- It updates once per second and is accurate to within that second. The underlying timestamp comparison is millisecond-precise; the display is rounded for legibility.
- › What happens after the target date passes?
- The display switches to a 'time since' counter with a leading + sign and the label changes from 'until' to 'since'. The countdown keeps running so you can see exactly how long ago the event was.
- › Can I share the countdown with someone else?
- Yes. The shareable link at the bottom of the page contains your event label and target date encoded in the URL. Anyone who opens it sees the same countdown ticking in their own browser.
- › Does the countdown keep running if I close the tab?
- No — there is no background process. The next time you open the link the countdown jumps to the correct value based on the actual elapsed time.