Calculators · Free Tool
Timezone Converter
Convert a date and time from one timezone to several others at once — see meeting times across cities instantly, with DST handled automatically.
About this tool
Pick a date and time in a source timezone, and this tool shows the equivalent local time in a set of major cities and timezones at once — UTC, New York, London, Berlin, Dubai, Mumbai, Singapore, Tokyo, Sydney, and Los Angeles — so you can see an entire meeting's local times side by side instead of converting one pair at a time.
All conversions use the browser's built-in Intl.DateTimeFormat with IANA timezone identifiers, which correctly accounts for each region's current daylight-saving rules — including the fact that not every timezone observes DST, and that the US and Europe don't switch on the same dates.
Common uses
- Schedule a meeting across multiple offices and see everyone's local time at once
- Check whether a specific time falls inside or outside someone's working hours in another timezone
- Confirm what a UTC timestamp from a log file or API actually corresponds to in your local time
Frequently asked questions
Does this tool account for daylight saving time automatically?
Yes — it uses each location's real IANA timezone identifier (like America/New_York, not a fixed UTC offset), so the conversion is correct whether or not daylight saving is in effect on the date you picked.
Why do some countries not shift by a whole hour?
A handful of regions — India, Iran, and parts of Australia among them — use 30- or 45-minute offsets from UTC rather than whole hours, for historical and geographic reasons. The tool handles these correctly since it relies on real timezone data, not simple hour math.
Can I convert a past or future date, not just right now?
Yes — pick any date and time, and the tool correctly applies whatever daylight-saving rules were or will be in effect for that specific date in each timezone, not just the rules in effect today.
Is my data uploaded to a server?
No. This tool runs entirely in your browser using JavaScript — nothing you type is transmitted, logged, or stored anywhere. You can even use it offline once the page has loaded.