GMT to UTC — Time Zone Converter
Greenwich Mean Time (GMT, UTC+0) covers the United Kingdom; Coordinated Universal Time (UTC, UTC+0) covers the global reference timeline. In standard time, UTC is on the same standard time as GMT. With only a small offset, working hours in the United Kingdom and the global reference timeline overlap for most of the day — scheduling is easy. Use the live converter below — it applies today's IANA time zone data, including daylight saving time, and gives you a meeting schedule you can paste straight into email or Slack.
GMT to UTC, hour by hour (today)
Frequently asked questions
What is the time difference between GMT and UTC?+
Greenwich Mean Time (GMT) is UTC+0 and Coordinated Universal Time (UTC) is UTC+0, so in standard time UTC is on the same standard time as GMT. The gap shifts by an hour around daylight saving transitions, so always check a live converter near the change dates in spring and autumn.
Does GMT or UTC observe daylight saving time?+
Greenwich Mean Time observes daylight saving time (GMT in winter, BST in summer). Coordinated Universal Time stays on UTC+0 all year — no daylight saving time.
What is the best time for a meeting between GMT and UTC?+
With only a small offset, working hours in the United Kingdom and the global reference timeline overlap for most of the day — scheduling is easy. The converter above highlights office hours in green for both zones, so you can slide to a time that works for everyone.
How do I share a GMT to UTC meeting time by email?+
Pick a time in the converter, log it to the Smart Clipboard, and copy it as bullets, a formatted table, or a one-line question — with both GMT and UTC times spelled out so nobody has to do the math.