Date & Time Tools

Countdown Timer

Set a target date and time and watch a live countdown tick down in days, hours, minutes, and seconds. Share the countdown or see how many business days remain until your deadline.

Instant date calculations Handles leap years & DST Browser-only, works offline

Runs entirely in your browser — no data is sent to a server

Input Text Output Text Browser-only No upload by default

Features

  • Live countdown in days, hours, minutes, seconds
  • Set any future date and optional time
  • Business days countdown (excludes weekends)
  • Custom event name for display
  • Multiple countdowns at once
  • Percentage complete bar (how far through the period)
  • Alert when countdown reaches zero
  • Browser-only. No account needed

How to use it

  1. Enter your target date and optional time.
  2. Give the event a name (optional).
  3. The countdown starts immediately.
  4. Add additional countdowns for multiple events.

Use cases

  • Counting down to a product launch or event
  • Project deadline tracking with days remaining
  • New Year, holiday, and birthday countdowns
  • Exam or deadline preparation timers

Limitations

  • Browser processing depends on available device memory for very large inputs.
  • Tool-specific limits based on file format or browser support are noted on each tool page.
See also

Related tools

date-time Browser

Date Calculator

Calculate the number of days between two dates, or add/subtract days from any date. Handles leap years, weekends, and business days, browser-only.

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date-time Browser

Age Calculator

Calculate exact age from a birthdate. Shows years, months, days, total days, weeks, and next birthday countdown, browser-only, instant.

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date-time Browser

Day of the Week

Find what day of the week any date falls on (past, present, or future. Works for any date from year 1 to 9999) browser-only.

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date-time Browser

Time Zone Converter

Convert time between any world time zones. Supports all IANA zones with DST awareness. Find the best meeting time, browser-based, free.

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Questions & answers

Frequently asked

Does the countdown continue if I close the tab?

The countdown resumes correctly when you reopen the page. It calculates from the target date each time.

Can I count down in business days?

Yes. Toggle 'Business days only' to exclude Saturdays and Sundays from the count.

Does Countdown Timer upload my content?

Your file or text is processed in your browser and is not uploaded.

Is Countdown Timer free to use?

Yes. All OnlineTextLab tools are free with no account required.