Time Zone Converter

Your Local Time
Loading...

Convert Between Zones

--:--
Select a time to convert

World Clock

Online Time Zone Converter

Our free Time Zone Converter makes it easy to convert times between different time zones around the world. Whether you're scheduling international meetings, coordinating with remote teams, or planning travel, this tool helps you avoid confusion and ensure everyone is on the same page.

Features:

  • Major Time Zones: Support for all major cities and time zones worldwide.
  • DST Aware: Automatically accounts for Daylight Saving Time changes.
  • World Clock: See current time in multiple cities at once.
  • Quick Swap: Easily swap source and destination time zones.
  • Live Updates: Real-time clock updates for all displayed times.

1. Understanding Time Zones

Time zones were established in the late 19th century to standardize timekeeping across regions. The world is divided into 24 primary time zones, each roughly 15 degrees of longitude apart. UTC (Coordinated Universal Time) serves as the reference point, with other zones expressed as offsets (e.g., UTC+5:30 for India).

2. Common Time Zone Abbreviations

UTC/GMT: Coordinated Universal Time / Greenwich Mean Time
EST/EDT: Eastern Standard/Daylight Time (US)
PST/PDT: Pacific Standard/Daylight Time (US)
IST: India Standard Time / Irish Standard Time
JST: Japan Standard Time
AEST: Australian Eastern Standard Time

3. Daylight Saving Time (DST)

Many regions observe DST, advancing clocks by one hour in spring and reverting in fall. This practice affects time zone conversions and can cause confusion during transition periods. Our converter automatically handles DST adjustments based on the selected date.

4. Business Applications

Time zone awareness is critical for global businesses. Common use cases include: scheduling video conferences, coordinating software deployments, planning marketing campaigns, managing customer support hours, and ensuring SLA compliance across regions.

5. Developer Tips

Always store times in UTC in databases and convert to local time only for display. Use ISO 8601 format (YYYY-MM-DDTHH:MM:SSZ) for APIs. Consider using libraries like Luxon or date-fns for complex time zone operations.


This Time Zone Converter helps you coordinate across global teams without timezone confusion.

All calculations are performed locally in your browser with full DST support.

Related Tools

unix-timestamp-converter

date-difference-calculator

add-subtract-time

Time Zone Best Practices

For Remote Teams:

When working with distributed teams, establish a "team time zone" for meetings and deadlines. Many teams use UTC or a central time zone as their reference. Always include the time zone when communicating times, and consider using tools that show multiple time zones simultaneously.

For Developers:

Store in UTC: Always store timestamps in UTC to avoid DST issues.
Convert on Display: Convert to local time only when showing to users.
Use IANA Names: Prefer "America/New_York" over "EST" for accuracy.
Test Edge Cases: Test your app during DST transitions and at year boundaries.