How Do You Calculate Time Zone Difference?
Formula: Difference = UTC offset of Zone A - UTC offset of Zone BExamples
- New York (UTC-5) vs London (UTC+0): -5 - 0 = -5 hours (NY is 5 hours behind)
- Tokyo (UTC+9) vs New York (UTC-5): 9 - (-5) = 14 hours (Tokyo is 14 hours ahead)
- LA (UTC-8) vs Berlin (UTC+1): -8 - 1 = -9 hours (LA is 9 hours behind)
Common Differences
| From | To | Difference |
|---|---|---|
| New York (EST) | Los Angeles (PST) | 3 hours |
| New York (EST) | London (GMT) | 5 hours |
| New York (EST) | India (IST) | 10.5 hours |
| New York (EST) | Tokyo (JST) | 14 hours |
| London (GMT) | Sydney (AEST) | 10 hours |
Quick Answer
Subtract one UTC offset from the other. Use our time zone converter to instantly see the difference between any two cities.
