Date & Time

Calculate exact age in years, months, and days

Calculate the duration between two calendar dates in total days, weeks, months, and years.

Calculate the future calendar date after adding X days, weeks, months, or years to a starting date.

Calculate the past calendar date after subtracting X days, weeks, or months from a reference date.

Count down exact days remaining until upcoming holidays, birthdays, weddings, or retirement dates.

Calculate working business days between two dates excluding weekends (Saturday/Sunday) and custom holidays.

Find the standard ISO 8601 calendar week number (Week 1 to 52/53) for today or any chosen date.

Check whether any year is a leap year (366 days with Feb 29) and learn the 400-year leap year rule.

Find out what day of the week (Monday through Sunday) you were born on or any historical date fell on.

Calculate elapsed hours and minutes between start time and end time for timesheets and payroll logs.

Set customizable countdown timers for cooking, presentations, workouts, and meetings with alarm beeps.

High-precision digital millisecond stopwatch with split and lap time recording.

25-minute focus intervals and 5-minute break cycles based on the proven Pomodoro productivity technique.

Convert meeting times across GMT, UTC, EST, PST, IST, BST, JST, and all worldwide time zones.

Convert Unix epoch timestamps to formatted local and UTC date strings instantly.