Date

Calculate exact age in years, months, and days, total days lived, next birthday, weekday born, generation, zodiac sign, and age milestones.

Count calendar days, business days, weekends, full weeks, approximate months, direction, and monthly breakdown between two dates.

Add or subtract years, months, weeks, days, and business days from a date with month-end rules and repeat previews.

Convert a date and time between IANA time zones with UTC, GMT offsets, weekday changes, and a comparison table.

Track live times across world time zones with offsets, dates, weekday changes, and work-hours status.

Convert Unix timestamps in seconds, milliseconds, microseconds, or nanoseconds to dates, UTC, ISO 8601, and back again.

Count business days between dates or add and subtract workdays with configurable weekends and holiday exclusions.

Convert Unix timestamps in seconds, milliseconds, microseconds, or nanoseconds to local time, UTC, ISO 8601, relative time, weekday, and back again.