Add or Subtract Days, Months, Years from Any Date
Calculate future dates, past dates, and date differences with our free date calculator tool
Our free online date calculator is a powerful tool that lets you easily add days to date, subtract days from date, add months to date, and calculate with years and weeks. Whether you need to calculate future dates for project deadlines, find past dates for historical research, or simply perform date math calculations, our calculator provides instant, accurate results with a modern, user-friendly interface.
Use our date math calculator to quickly determine delivery dates, calculate ages, plan events, or solve any date-related calculation. The calculator handles all edge cases including leap years and varying month lengths for maximum accuracy.
Enter your start date in the day, month, and year fields. Select "Add" from the operation dropdown, enter the number of days you want to add, and click "Calculate New Date". The calculator will instantly show you the future date.
Start by entering your date, then choose "Subtract" from the operation menu. Enter the number of days you want to go back, and click calculate to find the past date.
Yes! Our date calculator allows you to add or subtract years, months, weeks, and days all at once. Simply fill in the values for any combination of time units you need.
Our calculator is highly accurate and properly handles leap years, different month lengths (28-31 days), and all date edge cases. It uses JavaScript's built-in Date object for reliable calculations.
The calculator works with dates from year 1 to 9999, covering all historical and future dates you might need for calculations.
Yes, our online date calculator is completely free to use with no registration required. All calculations are performed in your browser for privacy and speed.