UTC to IST Converter

Use this UTC to IST Converter to convert Coordinated Universal Time to India Standard Time for server timestamps, API responses, software development, aviation, and global scheduling.

Quick Answer: Coordinated Universal Time (UTC) is UTC+0. Indian Standard Time (IST) is UTC+5:30. To convert UTC to IST, always add 5 hours and 30 minutes. This offset never changes — neither UTC nor IST observes Daylight Saving Time. The UTC to IST conversion is the same every single day of the year.

Why UTC to IST Is Always the Same

Unlike every other conversion on this site, the UTC to IST conversion has no seasonal variation. There is no “summer difference” and “winter difference” — just one fixed answer, always.

UTC (Coordinated Universal Time) is UTC+0, the global reference standard for all timekeeping. It is maintained by atomic clocks and never adjusts for Daylight Saving Time. All server logs, database timestamps, API responses, GPS coordinates, and aviation records use UTC as their base reference.

IST (Indian Standard Time) is UTC+5:30, fixed year-round. India does not observe Daylight Saving Time and has never done so since adopting IST in 1905.

Because neither side shifts for any season, the conversion rule is permanent:

No DST exceptions. No seasonal footnotes. No “during summer” qualifications. Add 5 hours 30 minutes — done.

UTC to IST Conversion Table (Full 24 Hours)

What Is UTC (Coordinated Universal Time)?

Coordinated Universal Time (UTC) is the global standard for timekeeping, maintained by a network of atomic clocks across the world. It replaced Greenwich Mean Time (GMT) as the world’s time standard in 1972 and serves as the reference point from which all other time zones are measured.

UTC is used universally in:

• Software development — all server timestamps, database records, log files, and API responses
• Aviation — all flight plans, air traffic control, and METAR weather reports
• Internet infrastructure — DNS, NTP (Network Time Protocol), TLS certificates
• Finance — global trading timestamps and transaction records
• Science — astronomical observations, GPS satellite timing, climate data

UTC never changes. There is no “UTC summer time” or “UTC daylight time.” UTC+0 is UTC+0, every hour of every day of every year.

What Is IST (Indian Standard Time)?

Indian Standard Time (IST) is UTC+5:30 — 5 hours and 30 minutes ahead of Coordinated Universal Time. It is the single time zone used across all of India, covering approximately 1.4 billion people.

India adopted a unified national time zone in 1905, aligned to the 82.5° East meridian through Allahabad, Uttar Pradesh. The resulting UTC+5:30 offset is a half-hour increment — one of the few world time zones that operates on a 30-minute rather than a whole-hour boundary. India has never observed Daylight Saving Time.

IST is always UTC+5:30. No exceptions. No seasonal changes. The IANA timezone identifier for IST is Asia/Kolkata.

Key cities on IST: Mumbai, New Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad.

UTC to IST for Developers

UTC is the standard for all timestamps in software systems. Indian developers frequently need to convert UTC server times to IST for display in applications serving Indian users.

Converting UTC to IST in code:

javascript

// JavaScript — using IANA timezone identifier
const utcDate = new Date('2026-06-22T14:30:00Z');
const istString = utcDate.toLocaleString('en-IN', { timeZone: 'Asia/Kolkata' });
// Result: 8:00:00 PM IST

python

# Python — using pytz
from datetime import datetime
import pytz

utc_time = datetime(2026, 6, 22, 14, 30, 0, tzinfo=pytz.utc)
ist_tz = pytz.timezone('Asia/Kolkata')
ist_time = utc_time.astimezone(ist_tz)
# Result: 2026-06-22 20:00:00+05:30

sql

-- SQL (PostgreSQL)
SELECT timestamp AT TIME ZONE 'UTC' AT TIME ZONE 'Asia/Kolkata' AS ist_time;

The manual formula: IST = UTC + 5 hours 30 minutes = UTC + 330 minutes

If the result exceeds 23:59, subtract 24 hours and add one calendar day.

UTC vs GMT — Are They the Same for IST Conversion?

For practical purposes of converting to IST, UTC and GMT give identical results. Both are at offset +0:00, so IST = UTC + 5:30 and IST = GMT + 5:30 produce the same answer.

The technical distinction: UTC is maintained by atomic clocks and is the modern international standard. GMT is the historical solar-time-based name, still used colloquially for UK winter time. When converting to IST for any practical purpose — scheduling, software, travel — treat UTC and GMT as interchangeable.

Need to Convert IST to UTC Instead?

→ IST to UTC Converter

Quick reference:

FAQs

What is the time difference between UTC and IST?

IST is always exactly 5 hours and 30 minutes ahead of UTC. This difference never changes — neither UTC nor IST observes Daylight Saving Time. The UTC to IST conversion is the same on every day of the year, in every season.

How do I convert UTC to IST?

To convert UTC to IST, add 5 hours and 30 minutes. For example, 09:00 UTC equals 14:30 IST (2:30 PM IST). If the result exceeds midnight, it falls on the next calendar day. There is no seasonal adjustment needed — the offset is always +5:30.

What is UTC 00:00 in IST?

UTC 00:00 (midnight) equals 05:30 AM IST on the same calendar day. This is one of the most common conversions for developers checking when a midnight UTC scheduled job runs in India.

What is UTC 12:00 in IST?

UTC 12:00 (noon) equals 05:30 PM IST on the same calendar day.

What is UTC 09:00 in IST?

UTC 09:00 equals 14:30 IST (2:30 PM IST) on the same calendar day.

What is UTC 06:30 in IST?

UTC 06:30 equals 12:00 PM (noon) IST. This is the UTC time that corresponds to exactly noon in India.

Does the UTC to IST conversion change with Daylight Saving Time?

No. Neither UTC nor IST observes Daylight Saving Time. UTC is always UTC+0 and IST is always UTC+5:30, making the difference permanently fixed at 5 hours and 30 minutes. This makes UTC to IST the simplest of all the time zone conversions involving India — no seasonal exceptions, no EDT/PDT equivalents to account for.

Why does IST have a 30-minute offset from UTC?

India’s UTC+5:30 offset includes a 30-minute increment because IST was established to align with the 82.5° East meridian passing through Allahabad. India chose a single national time zone rather than splitting the country, and the geographic midpoint falls at a longitude that corresponds to a half-hour UTC offset rather than a whole hour.

What is UTC+5:30 called?

UTC+5:30 is called Indian Standard Time (IST). It applies to all of India and Sri Lanka. The IANA timezone identifier is Asia/Kolkata. Nepal uses UTC+5:45 (not IST) and observes a different offset.

Is UTC the same as GMT for converting to IST?

For converting to IST, yes — UTC and GMT give identical results because both are at offset +0:00. IST is 5 hours 30 minutes ahead of both. The technical difference (UTC is maintained by atomic clocks while GMT is solar-time based) does not affect the calculation.

What UTC time corresponds to 9 AM IST?

9:00 AM IST equals 03:30 UTC. To convert IST to UTC, subtract 5 hours and 30 minutes.

What UTC time corresponds to 5:30 PM IST?

5:30 PM IST equals 12:00 UTC (noon). This is a useful reference point — whenever it is exactly noon UTC, it is exactly 5:30 PM IST.

How do I store IST times in a database?

Best practice is to always store timestamps in UTC in your database, then convert to IST only for display. Use the IANA timezone identifier Asia/Kolkata for the conversion. This avoids ambiguity and means your data is correct even if your server’s local timezone ever changes.

About UTC and IST

Coordinated Universal Time (UTC) is the global timekeeping standard, identified in the IANA Time Zone Database as UTC or Etc/UTC. It is maintained by the Bureau International des Poids et Mesures (BIPM) using a weighted average of over 400 atomic clocks in more than 50 countries. UTC replaced GMT as the world’s primary time standard in 1972. All internet protocols, operating systems, and programming languages reference UTC as their base time standard.

Indian Standard Time (IST) is UTC+5:30, identified in the IANA Time Zone Database as Asia/Kolkata. India uses a single time zone across its entire territory and has done so since 1905. IST is one of a small number of world time zones with a half-hour offset, alongside Nepal (UTC+5:45), Iran (UTC+3:30), and parts of Australia (UTC+9:30).

Author & Methodology

Author: CalculatorGeek Editorial Team

Reviewed by: CalculatorGeek Technical Review Team

Last reviewed: June 2026

Methodology: This converter uses IANA timezone identifiers (UTC for Coordinated Universal Time, Asia/Kolkata for IST). Since neither timezone observes Daylight Saving Time, no date-aware offset logic is required — the offset is permanently fixed at UTC+5:30.

References:

• IANA Time Zone Database — official source for UTC offsets and timezone identifiers worldwide
• MDN Web Docs — Intl.DateTimeFormat — browser implementation of IANA timezone formatting using Asia/Kolkata
• India Standard Time — Wikipedia — confirms IST is UTC+5:30 with no DST observance
• BIPM — International Bureau of Weights and Measures — official source for UTC definition and maintenance

Also useful:

• IST to UTC Converter
• EST to IST Converter
• GMT to IST Converter
• All Time Zone Converters