Time Difference Calculator: Never Miss a Meeting
Working across time zones? Our Time Difference Calculator shows you the exact gap, current times in both locations, and smart meeting suggestions.
How Time Zones Work
Earth is divided into 24 main time zones. Key facts:
- UTC is the global standard
- DST changes twice a year in 70+ countries
- Half-hour zones: India, Australia
- Quarter-hour: Nepal (+5:45)
Major Time Differences
| From → To | New York | London | Tokyo | Sydney |
|---|---|---|---|---|
| New York | — | +5 | +13 | +14 |
| London | -5 | — | +8 | +9 |
| Tokyo | -13 | -8 | — | +1 |
| Sydney | -14 | -9 | -1 | — |
Best Meeting Times
- US ↔ Europe: 2 PM GMT = 9 AM EST
- US ↔ Asia: 8 AM PST = 12 AM JST (next day)
- Avoid: 9 AM–5 PM local for both
Pro Tips
- Use UTC for global teams
- Check DST changes in March/November
- Pair with World Clock
FAQs
Does it handle DST? Yes — uses browser’s `Intl.DateTimeFormat`.
Can I enter UTC offset? Yes — e.g., UTC-5, GMT+9.
Mobile friendly? Fully responsive.
Conclusion
Time zones don’t have to be confusing. Use our 2025 Time Difference Calculator to schedule smarter, work globally, and stay connected.
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