# Countdown Timer

> Count down to a specific date and time. Set a target, watch the days/hours/minutes/seconds tick down live.

URL: https://uttir.com/countdown-timer
Categories: date-time-tools, calculators
Privacy: Countdown runs entirely in your browser. No tracking.

## About

Pick a target date and time, and the timer counts down to it in real time. Useful for upcoming launches, vacations, deadlines, weddings, releases, exams, or just finding out how many days until Friday.

The countdown updates once per second and is accurate to the second as long as the page is open. Closing the tab stops the countdown, but the next time you open it, it picks up where it left off (using your local time).

## How to use

1. **Set a target date and time** — Defaults to 7 days from now — adjust freely.
2. **Start the timer** — Press Start; the display updates every second.
3. **Pause or reset** — Use the controls to pause or pick a new target.

## Examples

### New Year countdown

Set the target to January 1 at 00:00 and watch the year end.

Output:

```
Days, hours, minutes, seconds remaining
```

### 30-day sprint

A 30-day deadline for a personal challenge.

Output:

```
30d 0h 0m 0s → 0d 0h 0m 1s → …
```

## FAQ

### Why does the timer stop when I close the tab?

Because it runs in your browser. We do not store anything server-side. Reopen the page and the countdown will be based on the current time and the target you set, which is preserved in the form fields.

### Is the time local or UTC?

Local. The countdown uses your device's time zone. For deadlines in another zone, convert to your local time before setting the target.

### Will the alarm sound if I close the tab?

No. A browser tab can only run while it is open. The alarm fires when the timer reaches zero AND the tab is still open. For alarms that survive closing the tab, use your phone or computer's built-in timer.

## Related tools

- [Date Add/Subtract Calculator](https://uttir.com/date-add-subtract) — Add or subtract days, weeks, months, or years from any date. Handles month-end and leap-year rollovers.
- [Date Calculator](https://uttir.com/date-calculator) — Count the days between two dates, or add and subtract days from any date.
- [Unix Timestamp Converter](https://uttir.com/unix-timestamp-converter) — Convert Unix timestamps to readable dates and back, with a live current-time readout.

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For the full HTML page with the live tool, visit https://uttir.com/countdown-timer.
This file is the markdown rendering at https://uttir.com/countdown-timer.md. See https://uttir.com/llms.txt for a site-wide summary.