Date Calculator

Choose any starting date, then add or subtract days, weeks, months, or years. The start date counts as day zero, so adding one day always gives you the next calendar day. Month and year changes follow the real calendar — including shorter and longer months and leap years — so you do not have to count by hand.

People often use this for deadlines, travel planning, contract end dates, and quick “what day is that?” checks. If you want a common number of days from today, open one of the ready-made links below. For any other start date, use the calculator at the top of the page.

• Add 30 days to today
• Subtract 14 days from a date — choose Subtract, enter 14 days, and calculate
• Add or Subtract Months From a Date

Jump to frequently needed dates from today — from one week out to about six months. Each card shows the calendar date and weekday so you can open, save, or share the page you need. These listed dates always use U.S. Eastern Time so results stay consistent across Day Offset.

• 7 Days From TodayNovember 9, 2026Monday
• 14 Days From TodayNovember 16, 2026Monday
• 30 Days From TodayDecember 2, 2026Wednesday
• 45 Days From TodayDecember 17, 2026Thursday
• 60 Days From TodayJanuary 1, 2027Friday
• 90 Days From TodayJanuary 31, 2027Sunday
• 120 Days From TodayMarch 2, 2027Tuesday
• 180 Days From TodayMay 1, 2027Saturday

Looking for another number of days? View All Days From Today →

Need something more specific than add, subtract, or a quick date difference? These tools focus on one job each — dates from today, the full span between two dates, or working days only.

• Days From TodayFind a future date by adding days to today.
• Weeks From TodayFind the date a certain number of weeks from now.
• Months From TodayCalculate a date several months from today.
• Days Between DatesCalculate the exact duration between two dates.
• Business Days CalculatorCount weekdays and working days between dates.

Need to exclude weekends and holidays? Business Days Calculator →

Most calculations take under a minute. The result updates as you change the fields — press Calculate anytime if you want to confirm the answer on screen.

1. Choose a starting date (it defaults to today).
2. Select Add or Subtract and enter a whole number.
3. Choose days, weeks, months, or years, then check the resulting calendar date and weekday.

To find the time between two dates, switch to Date Difference, pick your start and end dates, and read the total days (with weeks and months). If you only need “N days from today,” choose a quick preset above or open a popular date such as 30 or 90 days from today.

How do I add or subtract days from a date?

Choose a start date, select Add or Subtract, enter a whole number, and choose days, weeks, months, or years. The result updates as you make changes; select Calculate whenever you want to confirm it.

Does the start date count as day one?

No. The start date is day 0, so adding one day returns the next calendar day. For example, one day after Monday is Tuesday.

How are months and leap years handled?

Months and years follow the calendar rather than a fixed number of days. If a target month has fewer days, the result uses its last valid date: January 31 plus one month is February 28 in a common year or February 29 in a leap year.

What is the difference between calendar days and business days?

Calendar days include every day of the week. Business days usually exclude weekends and, in this tool, U.S. federal holidays. Use the Business Days Calculator when those exclusions matter.