Timezone Converter
Convert time between world timezones instantly. Live clocks, DST awareness, and meeting planner.
What is Timezone Converter?
A timezone converter converts a given date and time from one timezone to another. The world uses hundreds of timezone identifiers (e.g. America/New_York, Asia/Kolkata) based on the IANA database. All are expressed as offsets from UTC (Coordinated Universal Time), the global standard. Many regions also observe Daylight Saving Time (DST), shifting clocks forward in spring and back in autumn.
This tool uses the browser's Intl.DateTimeFormat API to perform conversions, ensuring DST and regional rules are applied correctly. Live clocks update every second to help you plan meetings, travel, or API timestamps across zones.
How to Use Timezone Converter
- Select the source timezone from the dropdown (grouped by Americas, Europe, Asia, Oceania, Universal).
- Enter the time (HH:MM) and date to convert. The tool initializes with your current local time.
- Select the target timezone. The converted time updates instantly.
- Click a preset chip (EST→PST, UTC→IST, etc.) to quickly set common pairs. Use Swap to reverse source and target.
- View the live clocks and stats grid for time difference, abbreviations, and DST status. Press Esc to reset to current time.
Tips & Best Practices
When scheduling meetings across timezones, convert to UTC first and share the UTC time—it avoids DST confusion. Always confirm the date when crossing midnight; a 10 PM call in New York might be the next calendar day in Tokyo. Be aware that some regions (e.g. India) do not use DST, while others (e.g. US, EU) do. Use the DST status stat to see if either zone is currently in daylight time. For API or database work, store timestamps in UTC and convert for display. Pair this with our Unix timestamp converter for epoch values.
When to Use This Tool
Use the Timezone Converter when scheduling remote meetings across continents, planning travel or calls, interpreting API responses or log timestamps, or coordinating releases across global teams. It's ideal for developers, project managers, and anyone working across timezones. For related tools: use the Cron Expression Generator for timezone-aware schedules, or the Unix timestamp converter for epoch conversions.
Frequently Asked Questions
How many timezones are there?
There are over 400 timezone identifiers in the IANA database (e.g. America/New_York, Asia/Kolkata). Most map to about 24 primary UTC offsets (-12 to +14), but regional rules and Daylight Saving Time create many variations. This tool supports 30+ major timezones covering all continents.
What is UTC and how does it differ from GMT?
UTC (Coordinated Universal Time) is the world standard time reference with no DST. GMT (Greenwich Mean Time) was the historical standard; today UTC and GMT are effectively the same for civil time (within a second). GMT is still used informally, especially in the UK, while UTC is used in technology and aviation.
What is Daylight Saving Time (DST)?
Daylight Saving Time shifts clocks forward by one hour in spring and back in autumn to extend evening daylight. Not all regions observe DST. When DST is active, a zone may use a different abbreviation (e.g. EDT instead of EST). This tool handles DST automatically via the Intl API.
How do I convert EST to PST?
EST is 3 hours ahead of PST. So 2:00 PM EST = 11:00 AM PST. During Daylight Saving Time, EDT is 3 hours ahead of PDT (same relationship). Use the preset chip "EST → PST" or select America/New_York and America/Los_Angeles for an instant conversion.
Does this tool handle Daylight Saving Time?
Yes. The tool uses the browser's Intl.DateTimeFormat with timeZone, which automatically applies DST rules for each region. The stats grid shows whether DST is active or inactive for the selected timezones at the current moment.
Can I use this for scheduling meetings?
Yes. Enter your local time and timezone, select the participant's timezone, and see the converted time. Use presets for common pairs (EST→PST, UTC→IST). The live clocks help verify times across zones. Press Esc to reset to current time.