UTC to GMT Converter – Convert UTC to GMT

UTC and GMT share the same UTC+0 offset — no arithmetic is needed. A time in UTC is the same moment as the same clock reading in GMT. Note: GMT observes DST — The UK switches to BST (UTC+1) in summer; GMT itself always means UTC+0. Check the current offset with our converter when the UK is in BST season.

UTC and GMT both use UTC+0 — they represent the same moment in time, with no offset between them. UTC is the modern international standard defined by atomic clocks; GMT is the historical astronomical standard. For everyday scheduling they are interchangeable. The only practical catch: the UK uses BST (UTC+1) during summer (last Sunday in March to last Sunday in October), so London time differs from GMT/UTC by 1 hour during that period.

UTC and GMT use the same UTC+0 offset, so there is no time difference to accommodate. Any time that works for one party works for the other. If the GMT side is in the UK during summer, remember to confirm whether London is on BST (UTC+1) rather than GMT.

Global does not observe Daylight Saving Time. UTC remains constant year-round, which simplifies conversions.

Major cities in the UTC (Coordinated Universal Time, UTC+0) timezone include: UTC has no geographic location — it is the universal time reference used by aviation, the internet, meteorology, and global finance worldwide. UTC is a fixed-offset zone — these cities do not observe Daylight Saving Time.

Major cities in the GMT (Greenwich Mean Time, UTC+0) timezone include: London (winter), Dublin (winter), Edinburgh, Reykjavik, Accra, Dakar. These cities switch to BST (UTC+1) from the last Sunday in March to the last Sunday in October.

UTC and GMT share the same UTC+0 offset — no adjustment is needed when scheduling. Simply agree on a time and it applies equally to both parties. If one party is in the UK during summer, confirm whether they are on BST (UTC+1) to avoid a 1-hour mismatch. For full scheduling guidance, see our international meeting times guide.