From
GMT
London
Time Zone Converter
GMT to UTC Time Zone Converter
Convert GMT to UTC with a live clock, current time difference, UTC offsets, and work-hour overlap. UTC is 1 hour behind GMT.
To
UTC
London
When it is 7:30 AM in GMT, it is 6:30 AM in UTC.
GMT to UTC at a glance
UTC is 1 hour behind GMT. If someone gives you a time in GMT, move the clock by 1 hour to read it in UTC. A 9:00 AM start in London becomes 8:00 AM in London.
What GMT covers
GMT is commonly used as the United Kingdom time reference. In summer, the UK moves to British Summer Time. It is a familiar baseline for Europe, Africa, and global remote teams.
What UTC covers
UTC is the global reference clock used to compare time zones around the world. It does not change for daylight saving time. It is the safest format for international schedules, APIs, databases, and server logs.
Quick answers
What is the time difference between GMT and UTC?
UTC is 1 hour behind GMT.
What happens to a 3:00 PM meeting in GMT?
It lands at 2:00 PM in UTC.
Does daylight saving time matter for GMT to UTC?
GMT and UTC are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.