Time Zone Converter
Convert between time zones worldwide
2:30 AM EDT
Sun, Sep 27, 7:30 AM GMT+1
Quick Facts
- •PST to EST: add 3 hours
- •EST to GMT: add 5 hours
- •PST to GMT: add 8 hours
- •There are 24+ time zones due to half-hour offsets
Understanding Time Zones
The world is divided into 24 primary time zones, each roughly 15° of longitude wide. UTC (Coordinated Universal Time) is the reference, with zones ranging from UTC−12 to UTC+14. Some zones use 30 or 45 minute offsets (e.g., India at UTC+5:30).
Common Conversions
PST (Pacific) is UTC−8, EST (Eastern) is UTC−5, GMT is UTC+0, CET is UTC+1, IST (India) is UTC+5:30, JST (Japan) is UTC+9. During daylight saving, PST becomes PDT (UTC−7) and EST becomes EDT (UTC−4).
Frequently Asked Questions
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This calculator is for educational and reference purposes only. Always verify critical calculations independently.