Category
Date & Time
Convert and inspect dates, times, epochs, and time zones.
Duration Unit Converter
Convert a length of time between nanoseconds, milliseconds, seconds, minutes, hours, days, and weeks.
Date & TimeLOCAL
Human-readable Duration
Turn a number of seconds into "1d 2h 3m" and back, and parse free-form durations like "1h30m" or "1:23:45" into seconds.
Date & TimeLOCAL
ISO 8601 Date Converter
Expand any date or timestamp into ISO 8601 forms — canonical UTC, basic format, week date, ordinal date — plus its calendar breakdown.
Date & TimeLOCAL
Timezone Converter
Convert a wall-clock time from one IANA timezone to several others, with correct DST offsets, abbreviations, and day rollover.
Date & TimeLOCAL
Unix Timestamp Converter
Convert Unix seconds, Unix milliseconds, and ISO 8601 timestamps with UTC, local time, relative time, and calendar breakdown.
Date & TimeLOCAL