YourWorldTime

IST to UTC

IST sits at UTC+5:30; UTC sits at UTC+0. That puts UTC 5 hours 30 minutes behind of IST.

Convert a time

Converted time

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Hour by hour

Computed on a date when IST is genuinely in force — using today would be wrong for half the year, because a standard-time abbreviation does not exist in summer.

ISTUTC
00:0018:30previous day
01:0019:30previous day
02:0020:30previous day
03:0021:30previous day
04:0022:30previous day
05:0023:30previous day
06:0000:30
07:0001:30
08:0002:30
09:0003:30
10:0004:30
11:0005:30
12:0006:30
13:0007:30
14:0008:30
15:0009:30
16:0010:30
17:0011:30
18:0012:30
19:0013:30
20:0014:30
21:0015:30
22:0016:30
23:0017:30

What these abbreviations actually are

 ISTUTC
Full nameIndia Standard TimeCoordinated Universal Time
Representative zoneAsia/KolkataUTC
OffsetUTC+5:30UTC+0
SeasonalStandard timeStandard time
Zone changes in 202600
Other meanings2None in common use

Common questions

What is the difference between IST and UTC?
UTC is 5 hours 30 minutes behind of IST. IST means India Standard Time at UTC+5:30, and UTC means Coordinated Universal Time at UTC+0.
Which time zone does this page use for IST?
Asia/Kolkata. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use Asia/Kolkata rather than the string "IST".
Does IST mean anything else?
Yes: Irish Standard Time at UTC+1, and Israel Standard Time at UTC+2. Ireland calls its summer time IST — four and a half hours behind India, and only in summer.
Is IST a daylight saving abbreviation?
No. IST is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.