Custom Countdown Timer
Create a beautiful countdown to any date and time. Set an event name, target date, and watch the live countdown. Shows weeks, days, hours, minutes, and seconds.
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How to Set Up a Custom Countdown
Type a name for what you are counting down to, pick a target date, and set the time of day if it matters. The countdown starts immediately and updates once a second, showing weeks, days, hours, minutes and seconds remaining. The default is 30 days from today so you have something on screen straight away.
Use ISO 8601 format (YYYY-MM-DD) when typing dates manually so there is no UK-vs-US confusion. The clock targets your device's local time, so a wedding at 14:00 in London on 12 June 2026 will read the same on every UK phone but will show a different absolute time for someone visiting the same page from New York.
Events People Most Often Build a Countdown For
| Event Type | Typical Lead Time | Why a Countdown Helps |
|---|---|---|
| Wedding | 6-18 months | Keeps both partners on the same milestone |
| Holiday departure | 1-12 months | Drives saving and packing motivation |
| Exam or deadline | 1-12 weeks | Turns vague stress into a concrete plan |
| Baby due date | 0-9 months | Useful for nesting checklists |
| House move | 2-12 weeks | Anchors utility switches and packing |
| Concert or festival | 1-9 months | Counts down to ticket release and the gig itself |
Daylight Saving and Why One Day a Year Is Not 24 Hours
British clocks change twice a year: forward one hour on the last Sunday in March (entering BST), back one hour on the last Sunday in October (returning to GMT). Those two days are 23 and 25 hours long. A countdown crossing one of those Sundays will appear to gain or lose an hour compared with simple 24-hour maths.
If you need second-perfect accuracy across a clock change, set the target time in the same way you would describe it to a guest: 'the wedding starts at 2pm' rather than 'in exactly 4,233 hours'. The tool handles the DST shift automatically because it reads your device's time zone rules.
Frequently Asked Questions
What happens when the countdown reaches zero?
The display freezes at zero rather than running into negative numbers. If you reload the page or change the target date, it picks up correctly from the new value. There is no audio alert, because most people use this for events spread over weeks or months rather than minute-by-minute timing.
Can I share a countdown with someone else?
The settings live in your browser only, so a fresh visitor will see the default values until they enter their own. If you want a quick way to share a deadline with a team, take a screenshot of the live countdown or use the [Days Until Calculator](/days-until-calculator) which produces a static figure you can paste into chat.
Does this work on mobile?
Yes. The countdown is designed mobile-first, so the seconds digits stay readable on a phone screen. Battery use is minimal because the page only updates a small DOM element each second; it is not redrawing the full layout.
Why are weeks shown alongside days?
Most people think of medium-distance events in weeks ('it's about 8 weeks away') and short ones in days ('only 3 days left'). Showing both means you don't have to do the divide-by-7 mental maths. For events more than a year out, consider using the dedicated long-range countdowns in the related tools below.
Related Tools
Days Until Calculator
Count down the days until any date or event. Quick presets for Christmas, New Year, Easter and more. Shows weeks, months and sleeps
New Year Countdown
Countdown to January 1st with a beautiful New Year themed display. Features year progress bar, fun facts about the year, and global New Year traditions.
Birthday Countdown
Track the countdown to your next birthday. Shows your current age, zodiac sign, days lived, and fun birthday facts. Enter your birth month and day to get started.