Calculate the difference between two dates in years, months, weeks, and days. Add or subtract days, weeks, or months from any date. This free date calculator is essential for project planning, age verification, and deadline tracking.
Select from Days Between Dates, D-Day Counter, Add/Subtract Days, Age Calculator, or Anniversary Calculator.
Use the date pickers to select start and end dates. For the Age Calculator, enter your birth date.
Click the Calculate button to get instant results. The tool displays days, weeks, months, and years as applicable.
Q: Does the calculator account for leap years?
A: Yes. All calculations account for leap years and varying month lengths automatically.
Q: Can I calculate business days?
A: Currently, the calculator counts all calendar days. Weekend and holiday filtering is not yet available.
Q: How is age calculated?
A: Age is calculated as full years, months, and days since the birth date. The next birthday countdown is also shown.