Time Zone Converter
Convert times between any two time zones worldwide.
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How It Works
Converts time by adding UTC offset difference. Handles midnight rollover automatically.
Formula
Offset conversionQuick Reference
Common calculations — results you can verify instantly.
NYC 9am → London
+5 hours
2pm London
NYC 9am → Tokyo
+14 hours
11pm Tokyo
LA 12pm → NYC
+3 hours
3pm NYC
Tips & Shortcuts
UTC is global reference. All zones expressed as UTC plus/minus offset.
DST shifts clocks 1 hour forward spring and back fall.
Common Mistakes
Not accounting for DST
Many zones observe DST changing their UTC offset seasonally.
Not handling day rollover
If result exceeds 23 or below 0 add or subtract 24.
Frequently Asked Questions
Difference is 14 hours. 9am + 14 = 11pm Tokyo.
Japan, China, India, most of Africa and Southeast Asia.
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