World Timezone Converter
Convert times between countries and regions instantly. Pick a reference zone, set the hour, and compare with any other timezone using search or the interactive map.
How It Works
Pick a reference timezone and local time; the tool converts to selected zones using IANA timezone data, accounting for daylight saving where applicable.
Formula
Target Time = UTC Time + Target Offset
UTC Time = Local Time - Local Offset
Offsets dynamically change depending on the date due to Daylight Saving Time (DST) rules defined by the IANA Time Zone Database.
Worked Example
Converting EST to CET during Winter
- Reference Time: 10:00 AM in New York (EST, UTC-5)
- Convert to UTC: 10:00 AM + 5 hours = 15:00 UTC
- Target Timezone: Madrid (CET, UTC+1)
- Convert from UTC: 15:00 UTC + 1 hour = 16:00 (4:00 PM)
- Result: 10:00 AM in NY is 4:00 PM in Madrid.
Common Mistakes
✕
Ignoring Daylight Saving Time (DST)
✓
Offsets change twice a year. Always use a tool that relies on standard IANA rules rather than fixed +/- hour additions.
✕
Confusing EST with EDT
✓
EST (Standard) is UTC-5, while EDT (Daylight) is UTC-4. Specifying 'New York' automatically handles this.
Frequently Asked Questions
Related Guide & Instructions
2026-07-10
Understanding UTC, GMT, and How Time Zones Really Work
Stop missing international meetings. Learn the exact difference between UTC, GMT, and how Daylight Saving Time impacts global scheduling.
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