When you need this conversion
Scheduling meetings across countries, catching live events and launches, planning calls with family abroad, and flights that cross time zones.
How the calculation works
The converter turns your local time into a single instant in UTC, then shows that instant in the other zone:
- 09:00 in New York on 24 September 2026 is UTC−4 (daylight time).
- That’s 13:00 UTC.
- London is on UTC+1 (British Summer Time), so it’s 14:00 there.
Daylight saving gaps
The US changes clocks on the second Sunday in March and the first Sunday in November; the UK and EU change on the last Sunday in March and October. Between those dates the New York–London gap is 4 hours instead of 5. Places like Phoenix, Colombo, Tokyo and Singapore don’t change their clocks at all.
Half-hour zones
India (UTC+5:30), Sri Lanka (UTC+5:30) and Adelaide (UTC+9:30 or +10:30) use half-hour offsets, and Nepal uses +5:45. The converter handles all of them.
Common mistakes
Using abbreviations. “EST” is standard time only. In summer, New York is on EDT (UTC−4).
Forgetting the date change. An evening meeting in California is the next morning in Asia.
For timestamps, use the Unix timestamp converter.