IST to GMT — Time Zone Converter
India Standard Time (IST, UTC+5:30) covers India; Greenwich Mean Time (GMT, UTC+0) covers the United Kingdom. In standard time, GMT is 5½ hours behind IST. Mornings in the United Kingdom overlap with afternoons in India, which keeps both sides inside office hours. 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.
IST to GMT, hour by hour (today)
Frequently asked questions
What is the time difference between IST and GMT?+
India Standard Time (IST) is UTC+5:30 and Greenwich Mean Time (GMT) is UTC+0, so in standard time GMT is 5½ hours behind IST. 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 IST or GMT observe daylight saving time?+
India Standard Time stays on UTC+5:30 all year — no daylight saving time. Greenwich Mean Time observes daylight saving time (GMT in winter, BST in summer).
What is the best time for a meeting between IST and GMT?+
Mornings in the United Kingdom overlap with afternoons in India, which keeps both sides inside office hours. 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 IST to GMT 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 IST and GMT times spelled out so nobody has to do the math.