Convert ISO 8601 dates to and from epoch time directly in your browser, including date-only and zone-less forms.
Full datetime with Z (2026-07-18T12:00:00Z), with a numeric offset (2026-07-18T12:00:00+07:00), space-separated (2026-07-18 12:00:00), date-only (2026-07-18, midnight UTC), and zone-less datetimes (interpreted as UTC by default, or your local zone on request).
Browsers disagree on how to interpret a zone-less ISO string — some treat it as UTC, others as local time. This tool parses the format explicitly and asks you which zone-less values should mean, instead of guessing silently.
An offset can be written with or without a colon (+07:00 or +0700) — both are accepted.