Mumbai (India) to London — Time Zone Converter
IST (UTC+5:30) → GMT/BST (UTC+1). London is 4.5 hours behind relative to Mumbai (India) right now.
Mumbai (India)
Oct 7, 2026, 5:25 PM
London
Oct 7, 2026, 12:55 PM
Need the reverse? London to Mumbai (India) →
Sample times — IST to GMT/BST
Sample conversions for today; daylight saving applied.
About Mumbai (India) and LondonMumbai (India) vs London time difference through 2026
The gap changes twice during 2026, because only London observes daylight saving time. Double-check meetings booked in the weeks around each switch.
Dates (2026) IST GMT/BST Difference Jan 1 – Mar 28 UTC+5:30 UTC London is 5.5 hours behind Mar 29 – Oct 24 UTC+5:30 UTC+1 London is 4.5 hours behind Oct 25 – Dec 31 UTC+5:30 UTC London is 5.5 hours behind
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
Mumbai (India) vs London time difference through 2026
The gap changes twice during 2026, because only London observes daylight saving time. Double-check meetings booked in the weeks around each switch.
| Dates (2026) | IST | GMT/BST | Difference |
|---|---|---|---|
| Jan 1 – Mar 28 | UTC+5:30 | UTC | London is 5.5 hours behind |
| Mar 29 – Oct 24 | UTC+5:30 | UTC+1 | London is 4.5 hours behind |
| Oct 25 – Dec 31 | UTC+5:30 | UTC | London is 5.5 hours behind |
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
Mumbai to London subtracts four and a half or five and a half hours. Indian afternoons map to UK mornings, making this one of the more workable Asia-to-Europe corridors for live collaboration.
Frequently asked questions
What is the time difference between Mumbai (India) and London?
Right now the offset is about 4.5 hours behind (from IST to GMT/BST). Daylight saving rules differ by region, so use the converter and table above rather than memorising a single number year-round.
Does daylight saving affect Mumbai (India) vs London?
Yes, whenever either region springs forward or falls back, the gap can shift by an hour. This page uses the IANA time-zone database so those transitions are applied automatically.
How do I schedule a meeting across India and the United Kingdom?
Pick a time in the converter, share both columns with attendees, and avoid early-morning or late-night slots on one side. The sample table lists common business hours in the source zone.
Related time zone conversions
Related tools
These free tools pair well with this page — open them in a new tab to finish your workflow.