Create multiple countdowns, get browser notifications, and embed live timers anywhere. Runs entirely in your browser — no server, no tracking.
Date arithmetic follows the proleptic Gregorian calendar and ignores historical calendar reforms; leap years and DST transitions can shift wall-clock results.
A countdown is one subtraction repeated every second: the browser calls Date.now() on each tick, computes remaining = target − now in milliseconds, then breaks that number into readable units using floor division and modulo — days from the whole, then hours/minutes/seconds as the remainder of the previous unit. When remaining crosses zero the app fires a browser Notification (with the user's permission) and flips to "passed". Events are persisted in localStorage, and an ?embed=1 iframe URL lets you drop a live timer onto any external page.
Every second the browser re-subtracts: target minus now, decomposed by modular arithmetic into days, hours, minutes and seconds.
Sam launches a product at 09:00 on December 1, 2026, and sets a countdown on November 28, 2026 at 15:30. He enables browser notifications so he is alerted the moment it ends.
Countdown to any future date. Calculate workdays between two dates. Live timer updates every second. Free, browser-based, no signup.
The Countdown Timer is a free tool that tracks the time remaining to any date you choose, updating live with one-second precision. You name an event — New Year, a product launch, a wedding, an exam, a visa interview — set the target date and time in your own timezone, and the display counts down days, hours, minutes, and seconds in real time. Unlike single-purpose countdown sites, it lets you save multiple events at once, each with its own mini countdown in a sidebar list, so you can watch a launch and a vacation simultaneously. It can also alert you with a browser notification the moment a countdown reaches zero, and generate embed code for your own site.
Project managers keep launch dates and contract deadlines visible while juggling several workstreams at once. Students count down to exams, thesis defenses, or graduation, using the saved list to watch application deadlines alongside study milestones. Event planners and marketing teams use it in the weeks before a product release, conference, or webinar, then paste the generated iframe embed onto a landing page so visitors see the same live clock. Travelers mark departure dates and visa appointments. Couples track weddings and anniversaries. Because every event is stored only in your own browser, it also suits private dates — medical procedures, court dates, or closing days — that you would never enter into an account-based service.
(1) Type a memorable event name, such as 'Launch Day' or 'Japan Trip'. (2) Pick the target date and time using the picker — times are interpreted in your local timezone, no conversion needed. (3) Click Save Countdown. The event joins a saved list with a compact '12d 4h 30m' summary, while the large readout ticks through days, hours, minutes, and seconds every second. (4) Optionally, click Enable Notifications so your browser fires an alert the moment the countdown completes, and open the Embed panel to copy an iframe snippet for your website or blog. Saved events persist in your browser, and finished ones are clearly marked as done.
Entirely on your device. Each countdown is saved to your browser's local storage — there is no account, no server database, and no sync. That has two practical consequences. First, your dates stay private; nothing about a medical appointment or a legal deadline is transmitted anywhere. Second, your saved list follows the browser, not you: open the site on the same computer and your events reappear, but a different device or a cleared browser history starts fresh. The embed code works anywhere because it simply links back to this page with your target date in the URL. Notifications require one-time permission from your browser and also fire locally.
Yes. Set any future date and time, and the tool displays a live countdown in days, hours, minutes, and seconds. It also calculates the total number of workdays (Monday-Friday) between today and the target date, useful for project deadlines and event planning.
It calculates workdays excluding Saturdays and Sundays. US federal holidays are not automatically excluded since holiday observance varies by country and employer. For precise project scheduling, manually adjust for your organization's holidays. The countdown updates every second in real-time.
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