What is the Timezone Converter?
The Timezone Converter takes a single instant in time — for example, your 2:00 PM standup in New York —
and shows you what it looks like everywhere else on Earth at the same moment. It's the tool you reach for when scheduling
a meeting with a team in Bangalore, planning a release window that touches customers in Sydney and London, or just trying
to decode an at timestamp from a server log that's running in UTC.
What this tool does
- IANA timezone database — pick any city or region, not just a static UTC offset. That means DST is handled correctly all year round.
- Bulk mode — paste a list of times (one per line, ISO 8601 or
HH:MM) and convert all of them in one go. Perfect for translating an on-call rotation. - DST badge — see at a glance which target zones are currently observing daylight saving time on the date you picked.
- Abbreviation column — get
EDT,PST,BST,ISTautomatically so you can copy a message that's instantly readable to humans. - Markdown table export — one click and the comparison is on your clipboard, ready to paste into a Slack DM, GitHub issue, or wiki page.
How it works under the hood
Conversion uses the browser's built-in Intl.DateTimeFormat API with the timeZone option, which
references the IANA tz database your operating system ships. There's no external API call — your source time and target
zones never leave the page. The same approach Chrome, Firefox, and Safari use to render new Date().toLocaleString()
is what powers every row of the output table.
Tips
- Click Now to snap to the current moment in your browser's timezone — useful for "is it work hours over there yet?" checks.
- Remove a zone by clicking the
×on its chip. The set is remembered until you reload. - Bulk mode treats bare
HH:MMvalues as today's date in the source zone.