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Multi-Zone Comparison
Add more time zones above to compare multiple locations at once.
Common Time Zone Offsets (Standard Time)
| Abbreviation | Name | UTC Offset | Major City |
|---|---|---|---|
| HST | Hawaii Standard Time | UTC-10:00 | Honolulu |
| PST | Pacific Standard Time | UTC-08:00 | Los Angeles |
| MST | Mountain Standard Time | UTC-07:00 | Denver |
| CST | Central Standard Time | UTC-06:00 | Chicago |
| EST | Eastern Standard Time | UTC-05:00 | New York |
| GMT | Greenwich Mean Time | UTC±00:00 | London |
| CET | Central European Time | UTC+01:00 | Paris |
| EET | Eastern European Time | UTC+02:00 | Athens |
| MSK | Moscow Standard Time | UTC+03:00 | Moscow |
| IST | India Standard Time | UTC+05:30 | Kolkata |
| CST | China Standard Time | UTC+08:00 | Shanghai |
| JST | Japan Standard Time | UTC+09:00 | Tokyo |
| AEST | Australian Eastern | UTC+10:00 | Sydney |
| NZST | New Zealand Standard | UTC+12:00 | Auckland |
About Time Zone Conversion
The world is divided into 24 primary time zones, each offset from Coordinated Universal Time (UTC). Some regions also observe Daylight Saving Time (DST), shifting their clocks forward by one hour during summer months. This tool handles DST automatically using your browser's built-in timezone database.
Complete Guide to Time Zone Conversion
Free Online Time Zone Converter
Instantly convert between any world time zones. Whether you're scheduling international meetings, coordinating with remote teams, or planning travel, this tool makes it easy to compare times across multiple cities and regions. Free, fast, and private — all conversions happen in your browser.
How Time Zones Work
Time zones are regions of the globe that observe a uniform standard time. They are based on 15-degree longitude intervals starting from the Prime Meridian in Greenwich, London (UTC±0). However, many countries adjust their time zones to align with political borders or geographic convenience, leading to non-standard offsets like UTC+5:30 (India) or UTC+5:45 (Nepal).
Key Features
Time Conversion
- Convert any date and time between zones
- 50+ major world time zones included
- Automatic Daylight Saving Time (DST)
- Search zones by city, abbreviation, or offset
- Swap source and target zones instantly
Multi-Zone View
- Compare multiple time zones at once
- Live clocks for source and target zones
- Time difference indicators
- Add or remove zones dynamically
- Copy all results with one click
Common Use Cases
- Schedule meetings across international teams
- Plan video calls with participants in different countries
- Convert flight departure and arrival times
- Track market opening hours (NYSE, LSE, TSE)
- Coordinate live events and webinars globally
- Calculate delivery or shipping time estimates
Understanding Daylight Saving Time
Many countries shift their clocks forward by one hour in spring ("spring forward") and back in autumn ("fall back"). This means the offset between two zones can change depending on the date. For example, New York (EST) is normally UTC-5, but during DST (EDT) it becomes UTC-4. This tool automatically accounts for these shifts based on the date you select.