What is the time difference between IST and UTC?

Coordinated Universal Time (UTC) is 5 hours and 30 minutes behind India Standard Time (IST). IST uses a UTC offset of UTC+5:30, while UTC uses UTC. For example, when it's 9:00 AM in IST, it's 3:30 AM in UTC. This difference remains constant year-round since neither timezone observes daylight saving time. Use the conversion table above to see the exact time for each hour of the day.

How do I convert IST to UTC?

To convert IST to UTC, subtract 5 hours and 30 minutes from the IST time. For example, 9:00 AM IST is 3:30 AM UTC, and 5:00 PM IST is 11:30 AM UTC. Since neither timezone observes DST, this conversion stays the same all year. You can also use the interactive converter above for quick, accurate results.

What time is it in UTC when it's noon in IST?

When it's 12:00 PM (noon) in IST, it's 6:30 AM in UTC. This is because UTC is 5 hours and 30 minutes behind IST. Similarly, when it's 6:00 PM in IST, it's 12:30 PM in UTC. This relationship is constant throughout the year. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours behind is UTC from IST?

UTC is 5 hours and 30 minutes behind IST. This means when it's 9:00 AM in IST, it's 3:30 AM in UTC, and when it's midnight in IST, it's 6:30 PM in UTC. This offset is constant throughout the year since neither timezone uses daylight saving time. The conversion table above provides a complete hour-by-hour mapping.

Is UTC ahead or behind IST?

UTC is behind IST by 5 hours and 30 minutes. Clocks in UTC show an earlier time than IST, meaning the day starts later in UTC relative to IST. For example, when it's noon in IST, it's still 6:30 AM in UTC. This difference stays the same year-round.

Does IST observe daylight saving time?

No, India Standard Time does not observe daylight saving time. The UTC offset of UTC+5:30 remains the same year-round, making time conversions from IST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

Does UTC observe daylight saving time?

No, Coordinated Universal Time does not observe daylight saving time. The UTC offset of UTC remains the same year-round, which simplifies time conversions. Regions using UTC keep their clocks unchanged regardless of the season.

What is the best time to call from IST to UTC?

The best time for a call between IST and UTC is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in UTC during their work day, call between 2:30 PM and 10:30 PM your IST time. Avoid calling too early or late, as the 5 hours and 30 minutes difference means your evening could be their early morning. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

Do IST and UTC ever have the same time?

No, IST and UTC are always 5 hours and 30 minutes apart and never display the same clock time simultaneously. Neither timezone observes DST, so the difference is constant year-round with no seasonal variation. The 5 hours and 30 minutes offset is determined by their fixed positions relative to the Prime Meridian (UTC). You can always rely on this consistent difference when planning across these timezones.

IST to UTC Converter

Convert India Standard Time to Coordinated Universal Time. See the hour-by-hour conversion table below.

Timezone Details

India Standard Time

1:12 AM

Friday, April 3, 2026

IST (UTC+05:30)

UTC

7:42 PM

Thursday, April 2, 2026

UTC (UTC+00:00)

Difference: -5h 30m

IST DST: No

24-Hour Overview

IST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

UTC — 24-hour overview

6p6p

9p9p

10p

11p

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

UTC to IST EST to IST IST to EST PST to IST IST to PST GMT to IST IST to GMT IST to JST JST to IST

Cities in These Timezones

IST Cities

Delhi Mumbai Kolkata Bangalore Chennai

More Tools

Compare IST & UTC Plan a Meeting (IST & UTC)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

India Standard Time on Wikipedia Coordinated Universal Time on Wikipedia IANA Time Zone Database