IST to GMT Time Zone Converter — Indian to Greenwich

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

Edit time or date on either side — all cards update instantly.

From

UTC...

Indian Standard Time

To Same day

UTC...

Greenwich Mean Time

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Upcoming clock change (daylight saving)

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

IST to GMT Conversion Chart

Last updated: April 2026

Today's reference — every 3 hours. DST is applied automatically.

IST Time	GMT Time
12:00 AM	7:30 PM (-1 day)
3:00 AM	10:30 PM (-1 day)
6:00 AM	1:30 AM
9:00 AM	4:30 AM
12:00 PM	7:30 AM
3:00 PM	10:30 AM
6:00 PM	1:30 PM
9:00 PM	4:30 PM

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 IST to GMT Conversion

Last updated: April 2026

Converting time between IST and GMT requires understanding their time zone offsets and any daylight saving time adjustments. IST (IST) operates at UTC+5, while GMT (GMT) is set to UTC+1. This means GMT is 4.5 hours behind IST. For example, when it's 6:30 PM IST on May 5, 2026, it's 2:00 PM GMT in GMT. 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 GMT for any time in IST, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

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 IST

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

Frequently Asked Questions

Last updated: April 2026

What is the time difference between IST and GMT?

The time difference between IST and GMT is 4.5 hours. GMT is 4.5 hours behind IST.

Is GMT ahead of or behind IST?

GMT is behind IST by 4.5 hours. When it's 9 AM in IST, it's 4:30 AM in GMT.

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

You subtract 4.5 hours from IST to get GMT. For example, 9 AM IST - 4.5 hours = 4:30 AM GMT.

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

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

What is 9 AM IST in GMT?

9 AM IST is 4:30 AM GMT. This conversion accounts for the 4.5-hour time difference between the two timezones.

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

No, the conversion between IST and GMT 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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