Timezone Converter
Convert a time from one timezone to another instantly. Handles DST automatically.
How to use this tool
- Open this page — it runs instantly in your browser, no signup or install.
- Allow any permission prompt if asked; everything stays on your device.
- Use the on-screen controls — results update live.
Convert a time from one timezone to another instantly. Handles DST automatically.
How it works
This tool converts a specific time from one timezone to another. Select a source timezone, enter the time, then select a target timezone to instantly see the equivalent local time at the destination, with Daylight Saving Time handled automatically.
Unlike a world clock that shows current time, this converter lets you work with any time -- past, present, or future -- making it ideal for planning, historical research, or scheduling. Enter a meeting time in San Francisco and find out what it is in Berlin without mental arithmetic.
The tool uses standard IANA timezone identifiers and up-to-date DST rules, so conversions are accurate even around the spring-forward and fall-back transitions. This eliminates a common source of scheduling errors when DST changes occur in one country but not another on the same date.
Results update as you change either timezone or the time value. This makes it easy to iterate -- if 3:00 PM in New York does not work for your Tokyo contact, simply adjust the time until you find a slot that is reasonable for both parties.
Worked example
Find out when a US webinar starts in Australia
- Set source timezone: 'America/Los_Angeles', enter time: '9:00 AM'.
- Set target timezone: 'Australia/Sydney'.
- The tool calculates the UTC offset difference, including any DST in effect.
- Result displayed: the Sydney equivalent time.
9:00 AM Los Angeles = 3:00 AM next day in Sydney (during US Pacific Daylight Time).
Common mistakes to avoid
- Entering AM/PM incorrectly -- '12:00 PM' is noon and '12:00 AM' is midnight; confusion here shifts results by 12 hours.
- Not specifying a date when converting near DST transitions -- the offset can differ by an hour depending on whether the date is before or after the changeover.
- Assuming all states or regions in a country share one timezone -- for example, Arizona in the US does not observe DST while neighboring states do.
Key terms
- Source timezone
- The timezone the entered time belongs to -- where the event is defined or originating.
- Target timezone
- The timezone you want to convert the time into -- the destination location.
- UTC (Coordinated Universal Time)
- The global time standard to which all timezones are offset. Converting both zones to UTC and taking the difference gives the shift.
Frequently asked questions
- Does this converter handle daylight saving time?
- Yes. It uses the browser's IANA timezone database via Intl.DateTimeFormat which applies all DST transitions automatically.