Date & Time

Calculate exact age in years, months, days, hours, and minutes from any birthdate. Also shows total days lived and next birthday countdown.

Calculate exact days, weeks, months, and years between any two dates. Optionally exclude weekends to get business days.

Count business days (Mon-Fri) between two dates, or add a number of business days to a start date.

Calculate total hours worked given clock-in and clock-out times, with optional unpaid break deduction.

Convert any time between two time zones with automatic daylight-saving handling. Built for distributed teams and travel planning.

Live countdown to any future date — days, hours, minutes, and seconds. Great for birthdays, holidays, vacations, and project deadlines.

Add or subtract time durations in hours, minutes, and seconds. Useful for video editing, project tracking, and time math.

Find the ISO 8601 week number and day of year for any date. Critical for European business, project planning, and SQL date queries.

Add or subtract any number of days, weeks, months, or years to a starting date. Returns the resulting date.

Convert between Unix epoch seconds/milliseconds and human-readable UTC or local dates.

Parse a 5-field cron expression and show the next 5 scheduled run times.

Add a number of business days (skipping weekends) to a start date.

Convert between 12-hour (AM/PM) and 24-hour (military) time formats.

See the next US Daylight Saving Time spring-forward and fall-back dates.

Find what day of the week any date falls on — past, present, or future.