Date & Time

Convert Unix timestamps and date-times in your browser. Supports seconds, milliseconds, and microseconds with auto-detection, shows local and UTC time side by side, and can generate a timestamp from a date picker for log triage and API debugging.

Compare the same moment across multiple time zones in your browser using Intl rules. Useful for cross-border meeting planning, UTC-to-local checks, and verifying publish times.

Calculate the span between two dates in days, weeks, months, hours, and weekdays (Mon–Fri). Parsing runs in the browser for scheduling, event length checks, and release-gap tracking.

Add or subtract years, months, weeks, days, hours, and minutes from a base date-time to get a target moment, weekday, and timestamps. Handy for schedules, slip planning, and release timing.

Parse common 5-field Cron expressions in your browser. Breaks down minute, hour, day, month, and weekday fields into readable explanations for ops debugging and schedule review.

Calculate exact age in years, months, and days from a birth date, plus total days lived and days until the next birthday. Optionally set a custom as-of date; everything runs locally in the browser.

Count weekdays between two dates, or add N workdays to a start date to find a target. Currently excludes Saturdays and Sundays only—not public holidays—so treat results as a rough schedule estimate.

Build standard 5-field Cron expressions (minute hour day month weekday) with field inputs and common presets. Useful for CI schedules, system crontabs, and ops planning.

Set a target date and time to see a live countdown in days, hours, minutes, and seconds. Useful for launches, events, holidays, and personal deadlines.

Find the ISO 8601 week number for any date (weeks start on Monday), plus day-of-year and quarter. Useful for sprint planning and weekly report labels.

Shift a start date-time by years, months, days, hours, minutes, and seconds to get a target moment. Outputs ISO 8601, local string, relative description, and Unix timestamps for expiry and TTL planning.

Enter daily clock-in and clock-out times to total worked hours, overtime, and average hours per day. Supports overnight shifts. Useful for attendance checks and freelance day logs.