Timezone converter — IANA zones, offsets, and local times (browser Intl)
Pick a reference date and time in your local calendar, add IANA zones (full list when your browser supports it), and see each zone’s GMT offset, short abbreviation, and formatted local instant — computed only in your tab.
Frequently asked questions
No. Zone math uses only `Intl` in this tab; no timezone API calls. Nothing is sent to LocalTools servers for processing.
DST rules and IANA data versions can differ slightly between engines; compare the same instant (UTC) and verify both sides use the same zone identifier.