Convert GMT to UTC
GMT
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UTC
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parsetime shows the current time in London time (GMT/BST) and Coordinated Universal Time (UTC) side by side, with the exact gap between them right now. Paste any timestamp (a Unix number, an ISO 8601 string, or plain text like “June 1 2026 3:00 pm”) to convert that same moment between the two zones, along with UTC and Unix time. London uses GMT (UTC+0) in winter and BST (UTC+1) in summer. parsetime uses the official IANA timezone database, so the offset is always right for the exact date you enter.
Common questions
- What is the time difference between GMT and UTC?
- The panel at the top of this page shows it for the current moment, computed live from the IANA timezone database. It isn't a fixed number of hours: when GMT or UTC shifts on or off daylight saving time, the gap changes by an hour. Enter a specific date in the box to see the difference for that exact moment.
- What time is it in UTC right now?
- The UTC panel above shows the current local time there, ticking live, right next to GMT so you can compare at a glance. To check a different moment instead of now, type it into the box and both zones update together.
- How do I convert a specific time, not just now?
- Type or paste any timestamp into the box above (a Unix number, an ISO 8601 string like 2026-06-01T11:10:52Z, or plain text like “June 1 2026 3:00 pm”) and the panel shows that exact instant in both GMT and UTC, along with UTC and Unix time. A value with no timezone is read as your own local time, and parsetime tells you when that happens.
- Does parsetime handle daylight saving time correctly?
- Yes. London uses GMT (UTC+0) in winter and BST (UTC+1) in summer. parsetime uses the official IANA timezone database, so the offset is always right for the exact date you enter. Because the gap is computed for the exact instant shown, not a fixed offset, the GMT/UTC difference stays right even on the days around a clock change.