Time Zone Converter

Converting time across zones

Enter a date and time as it reads on the clock in the “from” zone, choose the zone you want to convert to, and the tool shows the matching local time there. Tap Use current time to start from right now. It’s built for the everyday question of “if it’s 3 PM here, what time is it there?” — for scheduling calls, catching live events, or coordinating with people abroad.

How it handles daylight saving

Time zone math is trickier than just adding a fixed number of hours, because many regions shift their clocks for daylight saving time (DST) part of the year — and they do it on different dates. Rather than hardcode offsets that would quickly go stale, this tool asks your browser’s built-in internationalization data for each zone’s actual offset on the specific date you entered. That means a conversion in July and the same one in January can correctly differ by an hour when one of the zones is observing DST and the other isn’t.

The small note under the result shows each zone’s UTC offset and the time difference between them, so you can see exactly how the conversion was made.

UTC: the reference point

Every zone is defined as an offset from Coordinated Universal Time (UTC). New York in winter is UTC−5; London is UTC+0; Tokyo is UTC+9. Converting between two zones really means finding the single moment in time they share and expressing it in each zone’s local clock. UTC is included in the list if you want to work to or from it directly.

A note on edge cases

On the one or two days a year when clocks spring forward or fall back, a local time can be skipped or repeated for an hour. Around those exact transitions a converted time may be off by an hour; everywhere else in the year the result is exact. When precision around a DST change matters, double-check against an official source.

FAQ

Which time zone does it start in?

The “from” zone defaults to your device’s own time zone when it’s in the list, so the current time is already meaningful. You can change both zones freely.

Does it cover every city?

It includes a curated list of common zones worldwide. Cities that share a zone (for example, Paris, Berlin, and Madrid) are grouped together since their clocks always match.

Does it handle daylight saving time automatically?

Yes, it reads each zone's actual offset for the specific date you enter using your browser's built-in time-zone data, rather than fixed offsets. That means the same conversion can correctly differ by an hour in summer versus winter when one zone observes DST.

Is the conversion exact around clock changes?

For nearly the whole year it is exact. On the one or two days a year when clocks spring forward or fall back, a local time can be skipped or repeated, so a converted result may be off by an hour near that transition; double-check an official source when that precision matters.

Is the time zone converter free and private?

Yes, it is free with no sign-up, and the conversion runs entirely in your browser, so nothing you enter is uploaded. It also works on phones and tablets for quick checks while scheduling calls.