Free Date & Time Calculator Tools

Calculate Any Date,
Any Time.

Days between dates, age calculator, countdown timers, business days, holiday countdowns — all in one fast, free, beautifully designed calculator.

Choose Your Calculator

8 powerful date tools, all free

Calculate the exact number of days, weeks, or months between any two dates.

Find a future or past date by adding or subtracting any number of days.

Calculate your exact age in years, months, and days from your date of birth.

Count down live to any event — birthdays, holidays, deadlines, or launches.

Count only working days (Mon–Fri) between two dates, excluding weekends.

See exactly how many days, hours, and minutes remain until Christmas Day.

Live countdown showing days and seconds until the New Year celebration.

Find the ISO week number of any date and see all dates in that week.

Start Calculating

Our main date calculator handles it all — pick any mode and get instant results.