JP

Countdown Timer Tool

Real-time countdown showing days, hours, minutes, and seconds until your target date. One-click presets for popular events and save up to 5 countdowns.

Last updated: 2026/03/01 Calculator
Presets
Set a target date to start the countdown

Saved Countdowns

No saved countdowns

Enter your birthday (month and day)

Month Day

Select your payday

Every month on the

How to Use

1

Set a Target Date

Enter a target date or click a preset button (Year End, Next Holiday, Christmas, etc.). You can also add a title and specify the exact time.

2

Watch the Real-time Countdown

The remaining days, hours, minutes, and seconds update every second in real-time. Expand "Details" to see total days, hours, and more.

3

Save & Copy

Save up to 5 countdowns for quick access. Use "Copy Result" to copy the countdown text to your clipboard.

About Countdown Timer

A real-time countdown timer that shows remaining days, hours, minutes, and seconds until your target date. Features one-click presets for popular events, multiple countdown management, and Japanese era display. All processing happens in your browser with data stored locally on your device.

Features

  • Real-time UpdatesDays, hours, minutes, and seconds update every second with smooth animations.
  • Rich PresetsYear End, Next Holiday, Payday, Christmas, Birthday, and New Year presets with one click.
  • Multiple CountdownsSave up to 5 countdowns simultaneously. Data persists in your browser for next visit.
  • Japanese Era & HolidaysJapanese era display for target dates. Built-in Japanese national holiday data for "Next Holiday" calculation.

Use Cases

  • Count days until year end
  • Birthday and anniversary countdowns
  • Check remaining days until next holiday
  • Project deadline and due date tracking
  • Countdown to next payday

FAQ

Does the countdown update in real-time?
Yes, it updates every second. Days, hours, minutes, and seconds change in real-time while the page is open.
What preset events are available?
Six presets: Year End, Next Holiday, Next Payday (25th or last day of month), Christmas, Next Birthday, and New Year.
How is "Next Holiday" calculated?
It uses built-in Japanese national holiday data (16 holidays plus substitute and citizens' holidays) to find the nearest upcoming holiday. Equinox dates are calculated astronomically.
How many countdowns can I save?
Up to 5 countdowns. Data is stored in your browser's localStorage, so they persist across visits on the same browser.
What happens when the target date passes?
The display automatically switches to show elapsed time since the target date.
Is my data saved on a server?
No, all data is stored only in your browser's localStorage. Nothing is sent to any server.
Can I set a specific time?
Yes, check "Set time" to specify hours and minutes for the target. Without it, the target defaults to midnight (00:00).
Can I use this on my smartphone?
Yes, the tool is fully responsive and works on smartphones, tablets, and desktops.
Can I copy the countdown result?
Yes, click "Copy Result" to copy the countdown text to your clipboard.
How is the Japanese era displayed?
The corresponding era (Reiwa, Heisei, Showa, Taisho, Meiji) is automatically shown for the target date.

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