How to use the date calculator
Pick a tab, enter your dates in day, month, year order, and press calculate. Each tab answers one question:
- Count Days: how many days sit between two dates
- Add Days: which date falls a set number of days before or after another
- Workdays: how many working days sit between two dates
- Add Workdays: which date you reach after a set number of working days
- Weekday: which day of the week a date falls on
- Week №: which ISO week a date belongs to
The Today button fills in the current date, which is the fastest way to answer "how many days until" or "how many days since" questions.
Counting days between two dates
The calculator subtracts the start date from the end date. From 1 January 2026 to 31 March 2026 is 89 days. Tick "Include end date" and the answer becomes 90, because the last day is counted as a full day too.
Which one you need depends on what you're measuring. A deadline or a countdown usually excludes the end date. A booking, a leave request or a contract term that runs "from" one date "to" another usually includes both. If a document doesn't say, we'd count inclusively and check with whoever wrote it.
Leap years are handled for you. 2026 and 2027 have 365 days; 2028 is the next leap year, with 29 February adding one day to any range that crosses it.
Adding or subtracting days
Enter a start date and a number of days, positive to go forward or negative to go back. 90 days after 1 October 2026 is 30 December 2026. This is the tab to use for notice periods, payment terms, or checking when a 30 or 90 day document runs out.
Working days in the UAE
Since 1 January 2022, the UAE federal government has worked Monday to Thursday with a half day on Friday, and Saturday and Sunday are the weekend. Private companies can set their own week, and most follow the same Saturday and Sunday weekend, but some still close on Friday or work six days. Check your own contract before relying on a count.
Our Workdays and Add Workdays tabs count Monday to Friday and skip Saturday and Sunday. On that basis, October 2026 has 22 working days, and no public holidays fall in it. Start on Monday 2 November 2026 and add 10 working days, and you land on Monday 16 November.
The calculator does not remove public holidays, so take those off yourself. Fixed holidays such as New Year's Day and National Day are easy to plan around. Eid al-Fitr, Arafat Day and Eid al-Adha follow the Hijri calendar, and the government confirms their exact dates only a few days ahead, once the moon is sighted. For a date range that crosses Eid, count the working days, then subtract the expected holiday days and allow one day either side.
Weekday and week number
The Weekday tab tells you which day any date falls on. 1 October 2026 is a Thursday.
The Week № tab uses the ISO 8601 standard, where weeks start on Monday and week 1 is the week that contains the year's first Thursday. Under that rule, 1 October 2026 is in week 40. Some calendars and spreadsheet settings count weeks differently, so if a supplier or school quotes a week number that doesn't match, that's usually why.
How car rental days are counted
Car rental is our business, and this is where a calendar count and a rental count part ways. In Dubai, a rental day is normally a 24-hour block that starts at your pickup time. It is not a calendar date.
Pick up at 10:00 on Monday 5 October and return at 10:00 on Friday 9 October, and you've rented for 4 days. The date calculator shows the same 4 days. Tick "Include end date" and it shows 5, which is the wrong number for a rental. Now return the same car at 13:00 on Friday instead: you've started a fifth 24-hour block, and that fifth day is usually charged.
The exact rule for late returns, including any grace period, comes from the rental partner who supplies the car. You review and accept their terms before you confirm the booking, so read that part if your return time is tight.
Our advice is simple. Set your return time at or before your pickup time and you won't pay for a day you barely used. If your flight leaves in the evening, a later pickup on day one usually costs nothing extra and keeps the count right. Longer bookings bring the daily rate down, so if your count lands near a week or a month, compare it with a weekly or monthly booking before you pay for single days. For a stay of a month or longer, switch the search to Monthly Rentals.
Know your dates?
See cars available in DubaiFrequently asked questions
How do I calculate the number of days between two dates?
Subtract the start date from the end date, which is what the Count Days tab does. From 1 January to 31 March 2026 is 89 days, or 90 if you include the end date. The calculator adjusts for month lengths and leap years automatically.
Does the date calculator include the end date?
Not by default. Tick "Include end date in calculation" to count the last day as a full day, which adds one to the result. Use it for bookings, leave or contracts that run from one date to another, and leave it off for deadlines and countdowns.
What is the weekend in the UAE?
Saturday and Sunday. The federal government moved to this weekend on 1 January 2022 and works a half day on Friday. Private companies can choose their own schedule, and while most follow Saturday and Sunday, some still close on Friday.
Does the working days calculator exclude UAE public holidays?
No, it only skips weekends. Subtract public holidays yourself. Eid dates depend on the moon sighting and are confirmed a few days before, so allow a day either side when your range crosses Eid al-Fitr or Eid al-Adha.
What date is 90 days from today?
Open the Add Days tab, press Today, and enter 90. As an example, 90 days from 1 October 2026 is 30 December 2026. Enter a negative number to count backwards instead.
How are car rental days calculated in Dubai?
In 24-hour blocks from your pickup time, not by calendar date. Pick up at 10:00 on Monday and return at 10:00 on Friday, and that's 4 days. Return later than your pickup time and the next day is usually charged. Any grace period depends on the rental partner, and it is set out in the terms you accept before booking.
