Convert Time Between Countries

Major countries from every continent: USA, UK, Canada, Australia, all major EU members (Germany, France, Italy, Spain, Netherlands, Sweden, Norway, Denmark, Finland, Poland, Greece), Russia, China, Japan, South Korea, India, Pakistan, Bangladesh, Thailand, Vietnam, Indonesia, Malaysia, Singapore, Philippines, New Zealand, South Africa, Egypt, Nigeria, Kenya, Brazil, Argentina, Chile, Colombia, Mexico, UAE, Saudi Arabia, Israel, Turkey, Iran, Iraq, Hong Kong, Taiwan, Switzerland, Austria, Belgium, Portugal, Ireland, Nepal, Sri Lanka. Each maps to one IANA timezone (the capital’s).

For countries spanning multiple timezones (USA, Russia, Canada, Australia, Brazil), the tool uses the capital city’s IANA timezone as a defined default: USA = America/New_York, Russia = Europe/Moscow, Canada = America/Toronto, Australia = Australia/Sydney, Brazil = America/Sao_Paulo. For more precise control, use the “Convert Time Between Timezones” sibling tool which exposes all 400+ IANA zones directly.

Yes – it uses the browser’s built-in IANA timezone database via Intl.DateTimeFormat with timeZoneName: 'longOffset'. Each conversion looks up the offset for the specific date you’ve selected, so spring-forward and fall-back transitions are respected. The DST badge compares the chosen date’s offset to January’s offset – if they differ, DST is observed; if the current matches the larger value, it’s currently in effect.

Properly. Offsets are calculated in minutes, not hours, and displayed as +5h 45m for Nepal or +5h 30m for India. Many converters silently round these to +6h or +5h and lose 45 minutes – this one doesn’t. Iran (+3:30), Newfoundland (-3:30), and several Pacific islands also have fractional offsets that survive the conversion.

Two reasons. First, DST transitions move the wall-clock relationship between countries – converting 14:00 NYC to London is +5h in winter but +4h during March-November DST overlap. The date picker lets you ask “what will the offset be on Nov 15?” Second, when planning future meetings, you need the actual offset on that day, not today’s.

This one is country-oriented – pick a country and the tool picks the timezone for you (the capital’s). The sibling tool exposes all 400+ raw IANA timezones directly so you can pick America/Los_Angeles instead of just “USA”. Use this one for casual international coordination, the sibling tool when you need precise sub-country zone control.

Yes – up to 3 target countries can be compared simultaneously. Each gets its own result card with full breakdown. Useful for coordinating distributed team meetings: pick your time + source, then add UK + Japan + Australia as targets and see all three converted times stacked. Click the Remove button on any target card to drop it; minimum 1 target enforced.

Because when you cross enough timezone offset, the wall-clock crosses midnight. Converting 23:00 NYC on June 2 to Tokyo gives 12:00 on June 3 (+13h means past midnight). The day-change badge (+1 day / -1 day) makes this visible so you don’t double-book yourself. Crossing the International Date Line (e.g., NYC to Auckland) routinely produces day offsets.

No. All parsing, timezone math, and DST detection use the browser’s local Intl.DateTimeFormat API. Open DevTools → Network and confirm zero requests fire – even when you Convert or Download. Safe for confidential meeting times, travel plans, or anything you’d rather not log to a third-party converter.

Yes. Total bundle is about 22 KB. Load once, disconnect, keep using. The timezone database is part of the browser (not a remote API), so DST detection and offset calculation work without network. Useful for travel planning on planes, or rapid time-zone math when conferencing.