Common questions people answer with DateCalc every day.
Get your precise age in years, months, weeks, and days — plus how many days until your next birthday.
Wedding, vacation, exam, retirement — count down the exact number of days, hours, and minutes.
Project deadlines, contract duration, how long since an event — get the exact count including work days.
Add or subtract any number of days, months, or years from a date to find a future or past date.
Add 280 days to the first day of the last period to estimate the due date, or track weeks of pregnancy.
Calculate how old someone was or will be on any past or future date — for legal, medical, or personal use.
How is age calculated exactly?
Age is calculated by counting complete years from the birth date to the target date, then remaining months, then remaining days. Leap years and varying month lengths are handled correctly.
What counts as a work day?
Work days exclude Saturdays and Sundays. Public holidays are not subtracted as they vary by country — you can adjust the result manually.
Is my data sent to a server?
No. All calculations run in your browser with JavaScript. No data leaves your device.
Is DateCalc free?
Yes, completely free. No registration, no limits, no watermarks — ever.