📅 Date & Time

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

Find the number of days, months, and years between two dates.

Live countdown to a specific date and time — days, hours, minutes, and seconds.

Add or subtract a number of days, weeks, or months from a date.

Find out what day of the week any date falls on.

Count the number of weekdays between two dates, excluding weekends.

Find the elapsed time in hours and minutes between a start and end time.

Find the ISO 8601 week number for any date.