Date & Time

Instant, private, and free

Countdown Timer.

Count down the days, hours, minutes and seconds to any date — birthdays, weddings, launches, exams or holidays.

On-device calculationNo signup
01

Set your values

Results update as you type.

24-hour format. Blank means midnight.

How to Use

Pick a target date (and optionally a time of day) and the countdown updates live, once every second.

The target is interpreted in your device's local timezone. If you leave the time blank it defaults to midnight at the start of that day.

Use Share to copy a link that reopens this countdown with the same date, time and event name.

FAQs

How many days until a specific date?

Enter the target date in the Target date field and the calculator shows the whole days remaining plus a live hours/minutes/seconds breakdown. If you leave the time blank, the countdown runs to midnight at the start of that day, which is the usual convention for 'days until'.

What timezone does the countdown use?

Your device's local timezone. A target of 2026-01-01 at 09:00 means 9am where you are, not UTC. If you share the link with someone in another timezone, they will see the countdown to 9am in their timezone, so add the timezone to the event name if that matters.

Does the countdown handle daylight saving time?

Yes. The countdown measures real elapsed time, so a day is always exactly 24 hours. If a DST change falls between now and your target, the wall-clock time shifts by an hour but the countdown stays accurate to the actual instant you chose.

What happens when the target date passes?

The countdown flips to count up instead. It is labelled 'Already passed' and shows how long ago the date was, which makes it useful as a 'time since' counter for anniversaries and milestones as well as a countdown.

Can I save or share a countdown?

Yes. Press Share to copy a link that contains the date, time and event name. Anyone who opens it sees the same countdown running live, and you can bookmark it so it reopens ready to go.

Does it count leap days?

Yes. A countdown that spans 29 February in a leap year includes that extra day automatically, so a countdown across all of 2028 shows 366 days rather than 365.

Cite this calculator

Canonical URL: https://mathify.one/es/date/countdown

Cite as: Mathify. (2026). Temporizador de Cuenta Regresiva. https://mathify.one/es/date/countdown

Use Cases

Countdown to a special event

Track the exact time remaining until a birthday, anniversary, vacation, or product launch. Add an event name to personalize your countdown.

Example: Set target date to December 31, 2025, at 11:59 PM to count down to New Year's Eve.

Share countdown with friends or team

Create a countdown link to share with others so everyone can see the same time remaining. Perfect for coordinating a group event or deadline.

Example: Share a countdown link for a project deadline so your team knows exactly how much time is left.

Frequently Asked Questions

How do I use the countdown timer?
Enter your target date and optional time. If you leave time blank, it defaults to midnight. Optionally add an event name. The timer will display the exact days, hours, minutes, and seconds remaining until that moment.
Can I share my countdown with others?
Yes, after setting your target date and time, you can share the countdown via a unique link. This link will show the same countdown to anyone you share it with.
What happens if I don't enter a target time?
If you leave the target time blank, the countdown will count down to midnight (00:00) on the target date. This is useful for day-level events like birthdays or holidays.

Tips & Common Mistakes

Tips

  • Double-check your target date and time to ensure accuracy, especially if you're counting down to a specific moment like a launch or deadline.
  • Use the event name field to label your countdown, making it easier to identify when you have multiple countdowns.
  • If you need to count down to a date without a specific time, leave the time field blank to default to midnight.
  • Share the link with others to keep everyone on the same page for upcoming events or deadlines.

Common Mistakes to Avoid

  • Forgetting to set the correct time zone – the countdown uses your local time zone, so ensure your target time matches your intended time zone.
  • Entering the date in the wrong format – always use the format shown in the input field (e.g., MM/DD/YYYY) to avoid errors.
  • Assuming the countdown updates automatically if you change the target date – you need to re-enter or adjust the fields to see the new countdown.

Last updated: August 13, 2026