Date Calculator
Need to know how many days between two dates, or what date it will be in 90 days? Our Date Calculator handles both calculations instantly.
What Is
A date calculator computes the duration between two dates in days, weeks, months, and years, or calculates a future or past date by adding or subtracting time from a given date.
How to Use
- Choose the operation: date difference or add/subtract days
- For date difference: enter both start and end dates
- For add/subtract: enter a start date and the number of days
- Click Calculate to see the result
- View the breakdown in days, weeks, months, and years
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Frequently Asked Questions
How is the date difference calculated?
The difference is calculated by counting the exact number of days between the two dates, then converted to weeks, months, and years.
Are weekends excluded?
By default, all days are counted. Some calculators offer a business days option that excludes weekends.
Can I calculate dates for project planning?
Yes, adding or subtracting days from a start date is perfect for setting deadlines and milestones.
Is the end date included in the count?
The calculator shows both inclusive and exclusive counts for clarity.
What date formats are supported?
You can use the date picker or type dates in MM/DD/YYYY or YYYY-MM-DD format.