Server logs say an error happened at 14:32 UTC. A webinar starts at 17:00 UTC. An aviation forecast uses "Z" time. To act on any of these you need the time where you are — and daylight saving makes the mental maths unreliable.

What UTC is
Coordinated Universal Time (UTC) is the world's reference time. It never changes for daylight saving, which is why servers, databases, pilots and international events use it. You'll also see it written as GMT (practically the same for everyday use), Z or Zulu time, as in 2026-10-13T14:32:00Z.
The offset rule
Every time zone is UTC plus or minus an offset:
- New York: UTC−5 in winter, UTC−4 in summer
- London: UTC+0 in winter, UTC+1 in summer
- Berlin: UTC+1 / UTC+2
- Ho Chi Minh City: UTC+7 all year
- Tokyo: UTC+9 all year
Local time = UTC + offset. So 14:32 UTC is 21:32 in Ho Chi Minh City and 10:32 in New York during summer time.
How to convert UTC to local time
- Open the free Time Zone Converter.
- Enter the date and time and set From time zone to UTC.
- Add a time zone for each place you care about — your own, your team's or your audience's.
The converter uses the real time zone rules for that date, so daylight saving is applied automatically.

Converting a Unix timestamp
Logs and APIs often store time as a Unix timestamp such as 1791763200. Those are always UTC. Paste the number into the Timestamp Converter to get a readable date, then convert it to your zone.
Common mistakes
- Forgetting the date changes. 23:00 UTC is already the next day in Asia.
- Daylight saving dates differ. The US and Europe switch on different weekends, so the gap between them changes for a few weeks each year.
- Using abbreviations. "CST" means Central Standard Time in the US and China Standard Time in Asia. Use city names instead.
- Half-hour zones. India is UTC+5:30 and Nepal is UTC+5:45.
FAQ
Is GMT the same as UTC? For everyday purposes, yes. Note that the UK uses BST (UTC+1) in summer, not GMT.
Why do servers use UTC? Because it never jumps for daylight saving, so logs from machines around the world line up.
Try it now
Convert any time with the free Time Zone Converter.
Related reading
See How to Schedule Meetings Across Time Zones and How to Get the Current Unix Timestamp. Browse the full blog for more guides.