ISO Week Date Converter

Convert clock times between 12-hour AM/PM and 24-hour formats, single or in bulk.

Add or subtract a number of business days to a date, skipping weekends and custom holidays.

Add or subtract days, weeks, months, or years from a date and get the resulting date in multiple formats.

Calculate exact age from a birth date in years, months, days, plus total days, hours, and the next birthday countdown.