DaysUntilNow
30 free date tools
Every calculator and countdown on this site
Grouped by the question you are actually asking: how far apart two dates are, what the calendar says about a given day, when a holiday lands, and how long is left until something you are waiting for.
Date calculators
Age in days calculator
Your age with nothing rounded away — and the date your ten-thousandth day falls on.
Business days calculator
Working days between two dates, with the skipped holidays listed one by one.
Days between dates calculator
Two dates in, and the one switch that decides whether the answer is four or five.
Days from today calculator
Any offset, forwards or back — and the answer to whether today counts.
Time duration calculator
From one stamp to another, down to the minute — and across midnight without flinching.
Weeks between dates calculator
Whole weeks and the days left over — the form a wall planner understands.
Calendar tools
Day of the week calculator
Any date, past or future, and the weekday it lands on — plus the same date a year either side.
Leap year checker
Any year against all three parts of the rule, and which part decided the answer.
Quarter dates
Which quarter a date is in, on a calendar, federal or tax-year basis — and all four listed.
Week number today
Today's week in both numbering systems, with the dates the week runs between.
Working days in a year
Weekdays, holidays and hours for any year or month, with the leap-year surprise built in.
Year progress
The year as a percentage, plus the same bar for the quarter, the month and the week.
Holiday dates
Clock change date calculator
Five rulebooks, and two windows a year when the Atlantic gap is an hour out.
Friday the 13th finder
Twelve thirteenths, seven weekdays, and a limit no year has ever broken.
Holiday observed date calculator
The legal date and the day off are two different dates, and only one of them moves.
Same calendar year finder
An old wall calendar is only useless until the pattern comes round again.
Season start date calculator
Two definitions, two dates, and neither of them is the 21st every year.
When is Easter calculator
The one holiday that has to be calculated before anyone can look it up.
Countdowns
Custom countdown
Any date, any name, shareable as a link — with no account at either end.
Christmas countdown
Live to the second, with the shopping calendar and ten years of weekdays.
Easter countdown
The one date that moves five weeks — and takes a whole spring with it.
Halloween countdown
October 31 to the second, with the weekday and the clock change beside it.
New Year countdown
Midnight on January 1, on your clock — with the length of the year ahead.
Thanksgiving countdown
The fourth Thursday in November, computed from the rule for ten years.
Planners
Anniversary and Birthday Planner
A date does not keep its weekday — and the jump is not always one day.
Bill and Subscription Due Dates
A charge set for the 31st does not skip February — it does something else, and this is what.
Month-End Close Countdown
The deadline is a working day, not a date — and in some months it is two days earlier than the calendar says.
Payday Countdown
Four cycles, four different answers to the same question — and one of them hands out an extra pay packet.
Renewal and Expiry Tracker
The printed date is almost never the deadline — for a passport it can be nine months early.
Shift and Rota Planner
A pattern measured in days never lines up with a month — this is where the two come apart.
How do the calculators and countdowns here work?
DaysUntilNow answers date questions inside the browser you are reading this in — your own clock, your own time zone, nothing sent to a server. That matters more than it sounds. A countdown computed in one time zone and read in another is wrong by up to a day at either end, and so is a “days between” answer that quietly uses somebody else’s calendar.
Days are counted as whole calendar days between midnights, not as elapsed 24-hour blocks. If a date is tomorrow, every tool here says one day, whatever the hour it happens to be. Where counting both the first and the last day would change the answer, the page gives you the switch instead of choosing for you.
The calculators fill in the result as you type; the countdowns tick every second. Neither needs an account, and the state lives in the address, so a link is enough to show somebody exactly what you saw.
Some date questions are arithmetic and some are calendar law. How many days there are between two dates is arithmetic. Whether that stretch contains a bank holiday, which weekday your deadline lands on, when Easter falls next year, and whether the clocks move in between — that is the calendar, and it is where the ordinary date box on a phone gives up. All 30 tools here take one of those questions and answer it completely, in the browser, in your own time zone.
What people are actually asking
Date calculators are for distance: days between two dates, a date a given number of days from today, working days only, an exact duration in days, hours and minutes, an age in days, a gap measured in weeks. These are the tools people reach for at work — notice periods, delivery windows, project deadlines.
Calendar tools are for the shape of the year: which week number today falls in, what weekday any date in any century was or will be, whether a year is a leap year, how many working days a year or a month contains, how far through the year we are, and where the quarters begin and end on a calendar, US federal or UK fiscal basis.
Holiday dates are for the rules behind the dates: when Easter falls and why it moves, what happens when a public holiday lands on a weekend, when each season actually starts, when the clocks change on either side of the Atlantic and why the two dates differ, when the next Friday the 13th is, and which years repeat a calendar exactly.
Countdowns are for waiting: the live, second-by-second kind, for the handful of days most people count down to — and one you fill in yourself.
The countdown you build yourself
The countdown sites in this niche will happily make you a custom countdown — once you register for an account and let them keep it. This one keeps the name, the date and the time in the address bar instead, which means the link is the countdown. Nothing is saved on our side, nothing expires, and the person you send it to sees the same clock you do, on their own device time. If you want reminders by email before the day arrives, that is a separate opt-in with your address and nothing else.
One date file, checked once, used everywhere
The holiday dates behind the countdowns, the working-day counts and the reference tables come from a single file that is recalculated at every release, so nothing on this site can quietly disagree with itself. If you would rather see the whole calendar at once instead of one date at a time, the holiday date table lays out every date we track — the next occurrence, the weekday it falls on, how far off it is, and next year from January to December.
The planners go one step further: they hold a list of dates rather than a single one, for the recurring things — paydays, renewals, shift rotas, month-end closes — that a single countdown cannot describe.
Frequently asked questions
Do these tools count the first day, the last day, or both?
Whole days between the two midnights, so the start day is not counted and the end day is. That is what people mean by “three days until Friday” on a Tuesday. Counting both ends gives a number one larger and is what payroll, notice periods and hotel bookings often want instead, so the days-between calculator has a switch for it and tells you which figure you are reading.
Why does the same link show a different number to someone in another country?
Because the count runs against the clock of whoever opens it. When it is already Tuesday in Auckland and still Monday in Los Angeles, the honest answer to “how many days until” genuinely differs by one. Sites that compute on a server show everybody the server’s day, which is wrong for almost everybody.
Can I share a countdown or a result without making an account?
Yes, and there is no account to make. The title, the date and every option you changed are written into the address bar, so copying the link copies the countdown. That is also how you put one in a message, a document or a group chat without anyone needing to sign in to see it.
Do the working-day tools use my country's holidays?
They use US federal holidays by default, including the rule that moves a weekend holiday to the nearest weekday. Weekends are skipped wherever you are, because Saturday and Sunday are the one thing most working calendars agree on. Bank holidays in the UK, statutory holidays in Canada and public holidays in Australia land on different days, so read any holiday-adjusted figure as the US one unless the page says otherwise.
What is coming up
Every date we track that falls inside your window — so a birthday, a bank holiday or a deadline never arrives as a surprise.
How we calculate this
Every answer here is worked out twice from the same rules: once at build time, so a crawler that never runs JavaScript still finds a real figure on the page, and once in your browser, so the number is right for your clock. Calendar arithmetic is done on UTC midnights and then labelled with your local date, which is the only way to count whole days without a time zone quietly adding or removing one at the boundary.
Fixed dates come from the rule itself — Christmas is December 25, and nothing has to be maintained by hand. Rule-based dates are walked out of the calendar at build time: Thanksgiving is the fourth Thursday in November, US clocks change on the second Sunday in March, EU clocks on the last Sunday in March. Easter uses the computus, the same algorithm the churches use, so every date that hangs off it moves with it. Dates set by lunar observation — Ramadan, Eid al-Fitr, Chinese New Year — use officially published dates rather than a formula, because a calculated day can be confidently wrong.
Working-day counts skip Saturdays and Sundays and, when you ask for them, US federal holidays, including the observed-day rule: a holiday falling on a Saturday is kept on the Friday before, one falling on a Sunday on the Monday after. Holidays elsewhere differ, and the tools that depend on them say so on the page. Week numbers are offered both ways, because the two conventions disagree by a week at either end of the year: ISO 8601 weeks start on Monday and week 1 is the one containing January 4, while the common US numbering starts on Sunday and counts January 1 into week 1.
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