BST to GMT
Convert British Summer Time (BST) to Greenwich Mean Time (GMT), live. GMT is normally 1 hour behind BST. Pick any time below, or open the full world clock map.
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BST vs GMT
BST (British Summer Time) runs at UTC+1 and GMT (Greenwich Mean Time) at UTC+0. GMT is normally 1 hour behind BST.
BST stays at UTC+1 all year round — it does not observe daylight saving time. GMT stays at UTC+0 all year round — it does not observe daylight saving time.
BST is the summer time of the United Kingdom; in winter the UK is on GMT (UTC+0).
Looking for the reverse conversion? See GMT to BST. You can also browse every offset on the interactive time zone map or line up several zones at once with the meeting planner.