Home › Date & Time › Countdown Calculator
Countdown Calculator
Pick a date — New Year, Christmas, a birthday, a deadline, a holiday — and watch the time tick down, second by second. The countdown updates live in your browser, and the breakdown shows the same gap in weeks, total hours and total minutes. Pick a date in the past and it counts up instead, showing how long ago it was.
The countdown runs in your browser and uses your device’s clock, so it stays correct even if you leave the page open. Dates are interpreted in your local timezone. Times are exact to the second; the total-weeks and total-hours figures are the same gap expressed in different units, rounded to one decimal place.
How it works
The countdown is the gap between now and your target date, split into whole days and the leftover hours, minutes and seconds: days = the gap divided by 24 hours, rounded down; the remainder is split the same way into hours (60 minutes), minutes (60 seconds) and seconds. The totals table restates the same gap in single units — total hours = the gap in milliseconds ÷ 3,600,000, total minutes ÷ 60,000, total seconds ÷ 1,000. The page re-checks your device clock every second, so the seconds tick live. Worked example 1: from Monday, November 9, 2026 at 7:38 AM to New Year’s Day 2027 at midnight is 52 days, 16 hours and 22 minutes — 52.7 days, 7.5 weeks, 1,264.4 hours. Worked example 2: from the same moment to Christmas 2026 at midnight is 45 days, 16 hours and 22 minutes — 45.7 days. Worked example 3: a gap of exactly 100 days is 14.3 weeks, 2,400 hours and 144,000 minutes. Worked example 4: a date in the past counts up instead — November 9, 2025 at 7:38 AM is 365 days ago on November 9, 2026 at 7:38 AM.
Frequently asked questions
How many days are there until New Year 2027?
From November 9, 2026 it is 53 days to January 1, 2027 at midnight (52 days and about 16 hours from the morning). The number shrinks by one each day at midnight — type any date above for the exact live figure, including the hours, minutes and seconds.
Does the countdown update live?
Yes. The page re-reads your device clock every second and re-computes the gap, so the seconds tick down in real time while the page is open. It needs no internet connection once loaded — but it does trust your device clock, so check the clock is right if the numbers look off.
What timezone does the countdown use?
Your local timezone. The date you pick is read as a local date and time, and the gap is measured against your device clock in the same timezone. That means a countdown to midnight on New Year’s Eve hits zero at midnight where you are, not at midnight somewhere else.
Can I count up from a date in the past?
Yes — pick any past date and the calculator switches to counting up, showing how many days, hours, minutes and seconds have passed since then. It is the same gap calculation, just in the other direction: useful for anniversaries, how long ago something happened, or a child’s age in days.
How many weeks are in 100 days?
100 days is 14 weeks and 2 days — 14.3 weeks. The totals table on the page gives you the same gap in weeks, total hours (2,400) and total minutes (144,000) at a glance, so you can quote whichever unit fits.