GMT Converter
Convert any city's local time to GMT (Greenwich Mean Time).
GMT Time
10:19 PM
Friday, August 21
How This Works
This converter uses each city's actual IANA time zone rules — not a fixed offset — so daylight saving time transitions are handled automatically and correctly for today's date.
Formula
Target Time = Source Time + (Target UTC Offset − Source UTC Offset)
Example
9:00 AM in New York (UTC−5) is 2:00 PM in London (UTC+0) — a 5-hour difference. The exact gap shifts slightly through the year as different regions enter and exit daylight saving time.
Frequently Asked Questions
What time is it in GMT when it's 6:19 PM in New York?
It's 10:19 PM in GMT.
Does this account for daylight saving time?
Yes — conversions use each city's current time zone rules, including daylight saving time where applicable.