General

Days Until Calculator

A live countdown to any future date — Christmas, New Year, your wedding, a holiday, anything.

Quick presets

Target date

Target time (optional)

Countdown

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Pick a date or a preset.

What this tool does

It is a live countdown to any future date and time. Pick a holiday from the presets or type your own date, and the days, hours, minutes and seconds are shown and tick down once per second. Useful for planning, motivation, or just for the satisfaction of watching the clock tick.

How to use it

Tap a preset to fill the date in for you, or pick a date from the calendar. The optional time field defaults to midnight in your local time zone. The calculator runs entirely in your browser, so the time it counts down to is your local time, not the server's.

How the countdown works

We compute (target − now) in milliseconds and split it into days (floor of ms ÷ 86,400,000), then hours, minutes and seconds for the remainder. The display refreshes every second. Daylight-saving changes are handled by the browser's Date object.

Date math primer

Span	Days
1 week	7
1 month (avg)	30.44
1 quarter	~91
6 months	~182
1 year	365
1 leap year	366

Frequently asked questions

Does it use my time zone?

Yes. The countdown is computed against your device's clock and time zone, so the value matches what you would see on the kitchen wall. Travel resets it automatically.

Why does the second count not match my watch perfectly?

Browsers refresh once per second but the timer can drift by a few hundred milliseconds. Over the course of a year that drift is invisible.

Can I save the countdown?

Bookmark the page after picking the date; the URL itself does not store the value, but most browsers preserve the form state when you reload from the bookmark.

What dates do the presets pick?

Each preset jumps to the next occurrence of that holiday. So picking Christmas on December 26 jumps to next year's December 25 automatically.

Does it count business days?

No, this is a calendar-day countdown. For working-day math, use our date difference calculator with the business-days option.

How is "start of summer" defined?

We use the meteorological definition: June 1 in the northern hemisphere, December 1 in the southern. The astronomical solstice is a few weeks later but most people think of summer as starting at the top of June.

Days Until Calculator