BST to IST Time Zone Converter — Greenwich to Indian

Convert between any time zones worldwide. Free and accurate time zone converter with DST support.

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FROM	TO	Period

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All timezones in sync. Click any slot to pin it.

Work hours (9 am–6 pm) Night (10 pm–6 am) Pinned / now

Popular Timezone Conversions

CST to EST PST to EST MST to EST GMT to EST JST to EST GST to EST IST to EST EST to GMT

About BST to IST Conversion

Last updated: April 2026

Converting time between GMT and IST requires understanding their time zone offsets and any daylight saving time adjustments. GMT (BST) operates at UTC+1, while IST (IST) is set to UTC+5. This means IST is 4.5 hours ahead GMT. For example, when it's 1:44 PM BST on May 8, 2026, it's 6:14 PM IST in IST. Europe/London observes daylight saving time, switching between GMT (UTC+0) and BST (UTC+1), while Asia/Kolkata does not observe daylight saving time. Use this converter to quickly find the equivalent time in IST for any time in GMT, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

Upcoming clock change (daylight saving)

From (Greenwich Mean Time): Next DST change: October 25, 2026 — BST shifts to GMT (UTC+0)

How to Use the Time Zone Converter

Last updated: April 2026

Select your source timezone from the "From timezone" dropdown (use search to find quickly)
Enter the date and time you want to convert (or click "Today" and "Now" for current time)
Select your target timezone from the "To timezone" dropdown
The conversion updates automatically as you change inputs - no button needed!
Use "Copy" button to copy the converted time, or use presets for quick conversions

More Conversions from BST

GMT to EST GMT to CST GMT to MST GMT to MDT GMT to PST GMT to AKST GMT to HST GMT to CET GMT to EET GMT to MSK GMT to JST GMT to CST-CHINA GMT to HKT GMT to SGT GMT to GST GMT to AEST GMT to AWST GMT to NZST GMT to UTC GMT to ART GMT to BRT GMT to PHT GMT to BDT GMT to KST GMT to SAST GMT to ICT GMT to EAT GMT to WAT GMT to PKT

Frequently Asked Questions

Last updated: April 2026

What is the time difference between BST and IST?

The time difference between BST and IST is 4.5 hours. IST is 4.5 hours ahead BST.

Is IST ahead of or behind BST?

IST is ahead of BST by 4.5 hours. When it's 9 AM in BST, it's 1:30 PM in IST.

How many hours do you add to BST to get IST?

You add 4.5 hours to BST to get IST. For example, 9 AM BST + 4.5 hours = 1:30 PM IST.

Does the BST to IST time difference change during Daylight Saving Time?

Yes, the time difference can change during Daylight Saving Time (DST). BST observes DST, which can affect the time difference during the transition periods in spring and fall.

What is 9 AM BST in IST?

9 AM BST is 1:30 PM IST. This conversion accounts for the 4.5-hour time difference between the two timezones.

Is BST the same throughout the year when converting to IST?

No, the conversion between BST and IST can vary during the year due to Daylight Saving Time. The time difference may change by 1 hour during DST transition periods (typically March and November), so always use a current timezone converter for accurate conversions.

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