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—
Mumbai · Delhi · Bengaluru
Plan global invites faster using the overseas meeting planner.
Difference
BST vs IST
UTC → UTC
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—
London · Edinburgh · Cardiff
IST to BST converter
Convert IST to BST time now
Free IST to BST converter. See India Standard Time and British Summer Time side by side. Live clocks, a 4h 30m gap, meeting hours, and a full-day chart for Mumbai and London.
Asia/Kolkata
—
IST → BST
To · British Summer Time
—
Europe/London
Interactive diagram
Watch IST convert into BST
Drag the India hour. Watch the British ST clock change.
India
9:00 AM IST
—
BST ← IST
British ST
—
Full-day chart
IST to BST hourly conversion chart
Full-day table. Tap a row to copy. Labels follow daylight saving.
| India | British ST | UTC offsets |
|---|
Meeting times
Best IST to BST meeting window
Find hours that work on both sides. Then save the slot to your calendar.
Follow along
Step-by-step IST to BST conversion
Four short steps to convert any IST time to BST.
Choose IST time
Select any hour in India Standard Time. Smart mode uses Asia/Kolkata.
IST to BST conversion guide
IST to BST conversion guide
This IST to BST converter shows British Summer Time (UTC+1) for any India Standard Time (UTC+5:30) time. Use it to schedule between Mumbai and London. Choose Smart DST for live city clocks. Choose Fixed mode when you only want the IST and BST labels.
India
IST
UTC+5:30
Mumbai · Delhi · Bengaluru
IST vs BST—
British ST
BST
UTC+1
London · Edinburgh · Cardiff
What is IST to BST conversion?
IST to BST conversion turns a IST clock into the matching BST time. Use it for calls, travel, and teams in Mumbai and London.
IST to BST time difference
BST is 4h 30m behind IST. Subtract 4h 30m from the IST time to get BST. The live clocks at the top show the current IST to BST gap.
IST vs BST
IST is UTC+5:30. BST is UTC+1. They are different names. If a region uses daylight saving, check the live labels.
IST to BST now / current time
Need ist to bst right now? Read the live clocks, or tap Use current time for an instant IST → BST result.
IST to BST time difference
Season / context — tap to explore
See how daylight saving can change this pair.
India—
—IST → BST
British ST—
Quick answers
India
India Standard Time (IST)
UTC+5:30
India Standard Time (IST) is UTC+5:30. Smart DST uses the city clock Asia/Kolkata so daylight saving stays correct for Mumbai · Delhi · Bengaluru.
- Cities: Mumbai · Delhi · Bengaluru
- City clock: Asia/Kolkata
- Fixed IST: UTC+5:30
- On this page it pairs with BST (UTC+1)
British ST
British Summer Time (BST)
UTC+1
British Summer Time (BST) is UTC+1. Smart DST uses Europe/London for cities such as London · Edinburgh · Cardiff.
- Cities: London · Edinburgh · Cardiff
- City clock: Europe/London
- Fixed BST: UTC+1
- From IST: BST is 4h 30m behind IST
IST to BST FAQ