Timezone Converter
Compare time across multiple timezones simultaneously. Live clock mode plus custom date/time input. Includes business hours indicator.
What Is a Timezone Converter?
A timezone converter lets you compare the same moment in time across multiple cities and regions. It's essential for scheduling international meetings, coordinating remote teams, or understanding when business hours overlap across continents.
How to Use
- The Current Time panel shows live clocks — updates every second
- Use Custom Time to pick any date and time and see how it appears in each zone
- Add or remove timezone rows using the dropdown
- A green dot indicates business hours (09:00–18:00 local time)
Features
- 21 major timezones across all continents
- Live clock mode — refreshes every second
- Custom date/time input for future scheduling
- Business hours indicator (09:00–18:00)
- UTC offset shown for each zone
FAQ
Does the tool handle Daylight Saving Time?
Yes. The tool uses the browser's built-in Intl API with IANA timezone names, which automatically accounts for DST transitions.
What does the green dot mean?
A green dot means the current (or selected) time falls within standard business hours — 09:00 to 18:00 — in that timezone.
Can I save my timezone list?
The selected timezones are kept in local React state for the session. Bookmark the page and re-add your preferred zones on return.
Why are some offsets like GMT+5:30?
Some countries (e.g. India, Iran, Nepal) use non-integer UTC offsets with 30- or 45-minute increments, reflecting their geographic position relative to standard meridians.