Timezone conversion
UTC to GMT Time — Convert Coordinated Universal Time to Greenwich Mean Time
UTC and GMT both refer to the UTC zone, so there is nothing to convert between them — a clock in that zone shows one time. What differs is what each name describes, not the time it shows.
UTC and GMT are two names for the same time zone.
Abbreviation disambiguation
On Clockjumper, UTC refers to Coordinated Universal Time — the global reference from which every other zone is expressed as an offset. It never shifts for daylight saving. GMT is equivalent to UTC for everyday use, though in the UK "GMT" also names the winter time, with clocks moving to BST in summer.
GMT is equivalent to UTC for everyday use. In the UK it also refers to the winter (non-daylight-saving) time; in summer the UK moves to BST (UTC+1).
Why there is nothing to convert
UTC and GMT both resolve to the UTC zone, so any clock change applies to both at the same moment. Where the names differ is in what they describe — an umbrella zone versus one of its seasonal forms, a city versus the zone it sits in, or two labels for the same offset. The disambiguation notes above spell out which applies here.
Frequently asked questions
- Is UTC the same as GMT?
- They refer to the same time zone (UTC), so a clock shows one time for both and there is nothing to convert. The names are not interchangeable in meaning, though — see below.
- Then what is the difference between UTC and GMT?
- The difference is in what each name describes rather than what time it shows. One may be an umbrella name for the zone while the other names only its winter or summer form; seasonal forms such as EST and EDT sit one hour apart as offsets but never apply at the same moment. The disambiguation notes on this page say which case this pair is.
- What time zone does UTC refer to?
- UTC refers to Coordinated Universal Time (IANA: UTC).
- What time zone does GMT refer to?
- GMT refers to Greenwich Mean Time (IANA: UTC).
- Is UTC on this page the same as other zones that share the letters "UTC"?
- On Clockjumper, UTC refers to Coordinated Universal Time — the global reference from which every other zone is expressed as an offset. It never shifts for daylight saving. GMT is equivalent to UTC for everyday use, though in the UK "GMT" also names the winter time, with clocks moving to BST in summer.
- Is GMT on this page the same as other zones that share the letters "GMT"?
- GMT is equivalent to UTC for everyday use. In the UK it also refers to the winter (non-daylight-saving) time; in summer the UK moves to BST (UTC+1).