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 6 months to 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 they match the dedicated pages on this site.

• 7 Days From TodaySeptember 11, 2026Friday
• 14 Days From TodaySeptember 18, 2026Friday
• 30 Days From TodayOctober 4, 2026Sunday
• 45 Days From TodayOctober 19, 2026Monday
• 60 Days From TodayNovember 3, 2026Tuesday
• 90 Days From TodayDecember 3, 2026Thursday
• 120 Days From TodayJanuary 2, 2027Saturday
• 180 Days From TodayMarch 3, 2027Wednesday

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

Enter how many days from today you need, and see the matching date and weekday right away. Handy when you already know the number — for example 45 or 90 days — and just want the calendar answer. To work in weeks or months instead, use the main date calculator at the top of the page.

Uses the same today setting as the main calculator (U.S. Eastern Time).

Explore Days From Today →

Find how many days fall between any two dates — useful for planning, deadlines, billing cycles, and simple date checks. The result also shows the same span in weeks and months so you can read it the way you prefer.

We count whole calendar days from the start date to the end date. The start date counts as day zero, so both ends are not automatically counted as full days. If you need both dates included, business days only, or more detail, use the full Days Between Dates page linked below.

Default dates follow the main calculator today setting (U.S. Eastern Time).

Need weeks, months, years, inclusive counting, or more details? Use the Days Between Dates Calculator → When weekends and U.S. federal holidays should be excluded, use the Business Days Calculator.

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 result date along with the days, weeks, and hours shown below it.

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,” use the quick calculator further down the page, or open a popular link such as 30 or 90 days from today.

What is a date calculator?

A date calculator helps you add or subtract time from a date and find how far apart two dates are. You can work in days, weeks, months, or years without counting on a calendar by hand. This free date calculator is useful for deadlines, trips, billing cycles, and everyday “what day is that?” questions.

How do I add days to a date?

Pick a start date, choose Add, enter the number of days (or switch to weeks, months, or years), then calculate. For example, add 30 days to September 4 and the result is October 4. The same steps work when your start date is not today.

How do I subtract days from a date?

Use the same calculator with Subtract. Enter the start date, choose Subtract, and type how many days, weeks, months, or years to go backward. For example, subtracting 14 days from a Friday deadline lands on the Friday two weeks earlier — useful for reminders, notice periods, and working backward from an event.

How do I calculate the number of days between two dates?

Open the Date Difference tab, enter a start date and an end date, then calculate. You will see the total days, plus the same span in weeks and months. For more options, use the full Days Between Dates Calculator. If you need to skip weekends and U.S. federal holidays, use the Business Days Calculator instead.

Does the date calculator include the starting date?

By default, the start date counts as day zero. Adding one day returns the next calendar day — so from Monday, plus 1 day is Tuesday, not the end of Monday. For two dates, we count whole calendar days from the start date to the end date. That means both ends are not automatically counted as full days. If you need both dates included, add one day to the result, or use the full Days Between Dates tool when more options are available.