Does the countdown continue if I close the tab?

Yes. Countdowns are based on the target date, not elapsed time. When you reopen the page, the timer recalculates from the target date automatically.

Can I track multiple events?

Yes. Add multiple events to your countdown list — each shows its own live countdown. All are saved in your browser's local storage.

Will my countdowns survive a browser restart?

Yes. Events are saved to your browser's localStorage, so they reappear when you reopen the page on the same device and browser. Clearing browsing data or switching devices removes them, since nothing is stored on a server.

What's the difference between the countdown and the timer tool?

The countdown counts down to a fixed future date and time — like a launch or birthday — and keeps running for days or weeks. The timer counts down a set duration in minutes and seconds for tasks like cooking or workouts.

Can I count down to a specific time of day, not just a date?

Yes. Each event accepts both a target date and an optional time, so you can count down to 5:00 PM Friday rather than just the day. The display then shows days, hours, minutes and seconds remaining.

How many events can I track at once?

You can add multiple named countdowns and they all tick simultaneously, each in its own block. Naming them — for example Product launch or Exam — keeps them clearly distinguished when several run together.

What happens when a countdown reaches zero?

When the target date and time arrive, the countdown reaches zero and, depending on the event, can show the time elapsed since. You can delete events you no longer need to keep your list tidy.

Countdown Timer — Days Until Any Event

How to use Countdown Timer

The countdown timer creates persistent event countdowns that tick live in your browser. Add named events with a target date and optional time; each event shows days, hours, minutes and seconds remaining and persists across page refreshes via local storage. Use it to track project deadlines, birthdays, product launches or any future milestone.

Enter an event name (optional) and select a target date and time.
Click Add Event to start the countdown.
View live-ticking countdowns for all your events.
Delete individual events when no longer needed.

Your data never leaves your device — 100% private processing.

How the countdown is stored

Event data is saved to your browser's localStorage, meaning events persist when you close and reopen the page without requiring an account. Data stays on your device and is not sent to any server. Clearing browser storage or switching devices will remove stored events.

Worked examples

Days to New Year

Inputs: From Dec 25, 2025 to Jan 1, 2026

Result: 7 days remaining

Down to the hour

Inputs: From Jul 1, 2025 12:00 to Jul 4, 2025 12:00

Result: 3 days, 0 hours, 0 minutes

Glossary

localStorage: Browser storage that persists data indefinitely on the same device and browser.
Unix timestamp: A single number representing a point in time, used for accurate countdown arithmetic.
Target datetime: The exact future date and time a countdown runs toward before reaching zero.
Timezone offset: The difference between local time and UTC, used when rendering event deadlines correctly.

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Countdown Timer

How to use Countdown Timer

How the countdown is stored

Worked examples

Glossary

Related reading

Frequently Asked Questions

Why use Countdown Timer?

Common use cases

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