Time & date calculators
Count days, compare dates, and plan around deadlines.
Date arithmetic is easy to get wrong, because the calendar is not regular: months vary in length, leap years move the boundary, and weekends and holidays do not always count. The calculators below handle that so you do not have to count on your fingers.
Date and time tools
Days until calculator
Count down the days until any date. Pick a date and see the days remaining, the weeks and days, and which weekday it falls on.
Date difference calculator
Count the days, weeks, months, and years between two dates.
Business days calculator
Count the working days between two dates, excluding weekends and any public holidays you enter.
Hours calculator
Calculate the hours worked between a start and end time, minus breaks.
Time card calculator
Work out the hours on a shift from a clock-in and clock-out time and an unpaid break, including overnight shifts.
Time zone converter
Convert a time of day between two time zones by their UTC offsets, including whether the date moves to the previous or next day.
Holidays and seasons
How many days until Christmas?
A live countdown to Christmas. See the days remaining until 25 December, the weeks and days, and which weekday it falls on this year.
How many days until New Year?
A live countdown to New Year's Day. See the days remaining until 1 January, the weeks and days, and which weekday it falls on.
How many days until Easter?
A live countdown to Easter Sunday. See the days remaining, the weeks and days, and the exact date — calculated automatically each year.
How many days until Halloween?
A live countdown to Halloween. See the days remaining until 31 October, the weeks and days, and which weekday it falls on.
How many days until Thanksgiving?
A live countdown to US Thanksgiving — the fourth Thursday of November. See the days remaining, the weeks and days, and the exact date.
How many days until Valentine's Day?
A live countdown to Valentine's Day. See the days remaining until 14 February, the weeks and days, and which weekday it falls on.
How many days until Mother's Day?
A live countdown to Mother's Day. See the days remaining, the weeks and days, and the date it falls on this year.
How many days until Father's Day?
A live countdown to Father's Day. See the days remaining, the weeks and days, and the date it falls on this year.
How many days until Black Friday?
A live countdown to Black Friday — the day after US Thanksgiving. See the days remaining, the weeks and days, and the exact date.
How many days until Cyber Monday?
A live countdown to Cyber Monday — the Monday after Black Friday. See the days remaining, the weeks and days, and the exact date.
How many days until the clocks change?
A live countdown to the next daylight saving time change. See the days remaining, the weeks and days, and the date the clocks change.
Life events
Days until your wedding
Count down to your wedding date. See the whole calendar days remaining, the weeks and days, the exact date, and the weekday it falls on.
How many days until your birthday?
Count down to your next birthday. Enter your date of birth to see the days remaining, the next birthday date, the weeks and days, and the weekday.
How many days until your anniversary?
Count down to your next anniversary. Enter the original date to see the exact days, next date, weeks and days, and weekday.
Days until the baby's due date
Count down the days until the due date. Enter the due date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until graduation
Count down the days until graduation. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until retirement
Count down the days until you retire. Pick your retirement date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until your vacation
Count down to your vacation start. Pick the date and see the calendar days remaining, the weeks and days, the exact date, and the weekday.
Days until summer vacation
Count down the days until summer vacation. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until spring break
Count down the days until spring break. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until winter break
Count down the days until winter break. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until school starts
Choose the confirmed first pupil day and see the calendar days remaining, weeks and days, date, and weekday, with a practical back-to-school plan.
Work and career
Days until your job interview
Count down the days until your job interview. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until your new job starts
Count down the days until your new job begins. Pick the start date and see the days remaining, the weeks and days, and the weekday.
Days until your pay raise
Count down the days until your pay raise kicks in. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your performance review
Count down the days until your performance review. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your bonus payment
Count down the days until your bonus is paid. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your project deadline
Count down the days until your project deadline. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until the conference
Count down the days until the conference. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until your product launch
Count down the days until your product launch. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your last day at work
Count down the days until your last day at work. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until deployment
Count down the days until your deployment. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until maternity leave
Count down the days until your maternity leave starts. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your exam
Count down the days until your exam. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Deadlines and expiry dates
How many days until the tax deadline?
Count down to the general US individual federal tax deadline and see the target date, calendar days, weeks and days, and weekday.
Days until your passport expires
Count down the days until your passport expires. Pick the expiry date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until your visa expires
Count down the days until your visa expires. Pick the expiry date and see the days remaining, the weeks and days, and the weekday.
Days until your license expires
Count down the days until your license expires. Pick the expiry date and see the days remaining, the weeks and days, and the weekday.
Days until your insurance expires
Count down the days until your insurance expires. Pick the expiry date and see the days remaining, the weeks and days, and the weekday.
Days until your warranty expires
Count down the days until your product warranty ends. Pick the expiry date and see the days remaining, the weeks and days, and the weekday.
Days until your subscription expires
Count down the days until your subscription ends. Pick the expiry date and see the days remaining, the weeks and days, and the weekday.
Days until your lease expires
Count down the days until your lease ends. Pick the end date and see the days remaining, the weeks and days, and the weekday.
Days until your contract expires
Count down the days until your contract ends. Pick the end date and see the days remaining, the weeks and days, and the weekday.
Days until your loan is paid off
Count down the days until your loan is fully paid. Pick the payoff date and see the days remaining, the weeks and days, and the weekday.
Days until your mortgage is paid off
Count down the days until your mortgage is fully paid. Pick the payoff date and see the days remaining, the weeks and days, and the weekday.
Days until your court date
Count down the days until your court date. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your medical appointment
Count down the days until your medical appointment. Pick the date and see the days remaining, the weeks and days, and the weekday.
Days until your surgery
Count down the days until your surgery. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
How many days until Election Day?
A live countdown to US Election Day — the Tuesday after the first Monday of November. See the days remaining, the weeks and days, and the date.
Sports and events
How many days until the Super Bowl?
A live countdown to the next Super Bowl. See the days remaining, the weeks and days, and the date of the big game.
How many days until the World Cup?
A live countdown to the next FIFA World Cup. See the days remaining, the weeks and days, and the opening date.
How many days until the Olympics?
A live countdown to the next Olympic Games. See the days remaining, the weeks and days, and the opening date.
Days until your marathon
Count down the days until race day. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until the concert
Count down the days until the concert. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Days until the festival
Count down the days until the festival. Pick the date and see the days remaining, the weeks and days, and which weekday it falls on.
Calendar days or working days?
That question usually decides which calculator you need. A deadline of "30 days" means something quite different from "30 working days", and the gap widens the longer the period runs. For contracts, notice periods, and processing times, working days are usually the right unit; for everything else, calendar days.
Date difference calculator gives the distance between two dates in days, weeks, months, and years, while Business days calculator skips weekends and lets you deduct public holidays.
Hours, shifts, and pay
Adding clock times is not the same as adding numbers, because hours run to 60 rather than 100. A shift from 22:00 to 06:00 also crosses midnight, which is where most arithmetic errors appear. Hours calculator adds time spans and deducts breaks, and Time card calculator totals a full week of shifts into hours — and into pay, if you enter an hourly rate.
To coordinate a meeting across countries, Time zone converter translates between zones. Bear in mind that daylight saving does not switch on the same date everywhere, so for a few weeks a year two zones can sit further apart or closer together than usual.
Countdowns
Most of this category is countdowns to a particular event. They share the same engine but differ in how the target date is found: some fall on a fixed date each year, some repeat on the same month and day, and some work from a date you enter yourself.
Days until calculator is the general one and acts as the way into the whole cluster. Among the most used are Days until Christmas, Days until birthday calculator, Days until baby due date calculator, and Days until retirement calculator.
What these calculators do not do
They do not know your local holiday calendar automatically — you enter public holidays yourself in the business days calculator, because they differ by country and by year. The countdowns also do not fetch dates for events that have not been announced yet. And where a deadline actually falls is decided by the contract or the law, not by a calculator.
FAQ
- Does the start day count when I measure days between two dates?
- The calculator returns whole days between the dates, so the start day is excluded. If a deadline is meant to include the day it runs from, add one. That is the classic source of being a day out, so check how the agreement is worded.
- How are leap years handled?
- Automatically. The calculators use the real calendar, so 29 February is counted in the years it exists. It is also why a period of "one year" can be 365 or 366 days depending on when it starts.
- Does the business days calculator include public holidays?
- It skips weekends automatically, but you enter holidays yourself. That is deliberate: holidays differ by country, some move from year to year, and a built-in list would inevitably go stale or be wrong for some users.
- Why does the hours calculator disagree with my own arithmetic?
- Usually because hours run in 60 minutes rather than 100. An hour and a half is 1.5 as a decimal but 1:30 as a clock time. The calculator shows both, so you can use the decimal for pay and the clock time for the rota.
- Does the time zone converter handle daylight saving?
- It works from the zone offsets you select. Be careful during changeover periods: the EU, the US, and other regions do not switch on the same date, so there are a couple of weeks each year when the usual gap between two zones does not hold.
- Why are there so many separate countdown pages?
- They are preserved from the site's earlier structure, where each event had its own page. They share the calculation but carry different content about that specific event. If you just need to count to an arbitrary date, the general calculator is the quickest route.