Free Generator

Timezone Converter

Convert times between any timezones instantly

Converge Converge Team
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Convert Time

Result

Converted Time
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Time Difference
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A timezone converter translates times between different world timezones, accounting for UTC offsets and daylight saving adjustments. For anyone working with international teams, scheduling meetings, or coordinating across borders, it is an everyday essential tool.

According to Buffer's 2024 State of Remote Work report, 67% of remote workers collaborate with colleagues in different timezones. GitLab's annual survey found that timezone differences are the #1 challenge cited by distributed teams, ahead of communication and isolation.

The complexity goes beyond simple math. Daylight saving time (DST) rules differ by country and change over time. The US and Europe switch on different dates, meaning the offset between New York and London shifts four times per year. India and China don't observe DST at all. And some zones use half-hour offsets (India at UTC+5:30) or even quarter-hour offsets (Nepal at UTC+5:45).

This converter uses your browser's built-in Intl API, which relies on the IANA timezone database — the same authoritative source used by operating systems, servers, and programming languages worldwide. It automatically handles DST transitions for the current date.

How to Use This Generator

  1. Set your time: Enter the time you want to convert. It defaults to the current time.
  2. Choose source timezone: Select the timezone the time is currently in (auto-detected from your browser).
  3. Choose target timezone: Select the timezone you want to convert to.
  4. Read the result: The converted time appears instantly, along with the date if it crosses midnight.

Pro Tips

  • Include the timezone in invites: Always specify the timezone when sharing times. "3 PM ET" is clear. "3 PM" is ambiguous. Even better: include a timezone converter link.
  • Use UTC for logs and APIs: Store and transmit times in UTC. Convert to local time only for display. This prevents DST bugs and timezone confusion in your data.
  • Watch for DST transitions: The US and Europe switch on different dates. For about 3 weeks each spring and fall, the offset between them changes. Double-check during transition periods.
  • Find overlap hours: For recurring meetings, find hours that fall within business time for all participants. Usually 2-3 hours of overlap exist even for US-Asia teams.

Frequently Asked Questions

How many timezones are there?
There are 38 standard timezones worldwide, ranging from UTC-12 to UTC+14. However, some regions use half-hour or quarter-hour offsets (India at UTC+5:30, Nepal at UTC+5:45), bringing the practical count to over 40 unique offsets. Daylight saving time creates additional temporary variations.
What is UTC?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It replaced GMT (Greenwich Mean Time) as the reference point. UTC does not observe daylight saving time. All timezones are defined as offsets from UTC — for example, US Eastern is UTC-5 (or UTC-4 during daylight saving).
When does daylight saving time change?
In the US, clocks spring forward on the second Sunday of March and fall back on the first Sunday of November. Europe changes on the last Sundays of March and October. Many countries don't observe DST at all, including most of Asia, Africa, and South America. DST rules change — always verify current rules.
How do I schedule meetings across timezones?
Find overlapping business hours. For US-Europe collaboration, 9-11 AM Eastern (2-4 PM London) works well. For US-Asia, early morning US or late evening Asia is typical. Buffer's 2024 Remote Work Report found that 68% of remote teams schedule around 2-3 timezone overlap hours per day.
What timezone does my browser use?
Your browser uses your operating system's timezone setting. JavaScript's Intl.DateTimeFormat().resolvedOptions().timeZone returns your IANA timezone name (e.g., 'America/New_York'). This tool auto-detects your local timezone for convenience.
What is the biggest time difference between timezones?
The maximum difference is 26 hours — between UTC-12 (Baker Island) and UTC+14 (Line Islands, Kiribati). In practice, the largest difference between populated areas is about 19 hours. This means it's always two different calendar dates somewhere on Earth.

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