IST to PST Converter

Use this IST to PST Converter to convert India Standard Time to Pacific Time for meetings, remote work, calls, interviews, and scheduling with the US West Coast.

Quick Answer: Indian Standard Time (IST) is UTC+5:30. Pacific Standard Time (PST) is UTC−8. PST is 13 hours and 30 minutes behind IST. During US Daylight Saving Time (PDT, UTC−7), the difference narrows to 12 hours and 30 minutes. To convert IST to PST, subtract 13 hours and 30 minutes — or subtract 12 hours and 30 minutes during US summer.

Current Time Difference Between IST and PST Right Now

The live converter above shows the exact current time in both India and US Pacific Time right now, calculated automatically from your device’s clock. At any given moment, the US West Coast is either 12 hours 30 minutes or 13 hours 30 minutes behind India — never anything in between, and never ahead. If you are checking “what time is it in California compared to India right now,” the answer is always one of these two values depending on whether the US West Coast is currently observing PST or PDT. The section below explains exactly which one applies and when it changes.

Why the IST to PST Difference Changes Throughout the Year

This is the most important thing to understand when converting IST to US Pacific time — and the reason many converters give you the wrong answer.

IST (Indian Standard Time) is UTC+5:30, fixed year-round. India does not observe Daylight Saving Time, so IST never changes regardless of the season.

PST (Pacific Standard Time) is UTC−8:00. This is the offset the US West Coast uses only during winter — from the first Sunday in November through the second Sunday in March.

PDT (Pacific Daylight Time) is UTC−7:00. From the second Sunday in March through the first Sunday in November, US West Coast cities switch to PDT. Most people in India still say “PST” when they mean Pacific time — but the actual US offset has shifted.

Because India’s IST is fixed while the US side changes, the IST–PST gap is not the same all year:

The converter above detects the correct US offset based on the date you enter, so your result is always accurate.

IST to PST Conversion Table

These cover the most commonly searched India-to-US Pacific time conversions. For exact results by date, use the converter above.

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, unified time zone used across all of India.

India adopted its national time zone in 1905, aligning to the 82.5° East meridian through Allahabad, Uttar Pradesh. The resulting UTC+5:30 offset is a half-hour increment rather than a whole hour — one of only a few such offsets in the world. India has never observed Daylight Saving Time. IST is UTC+5:30 every single day of the year, with no exceptions.

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

What Is PST (Pacific Standard Time)?

Pacific Standard Time (PST) is UTC−8:00, used by the western United States and Canada during winter. It covers major tech and business centers including San Francisco, Los Angeles, Seattle, and San Diego.

From mid-March through early November, these cities switch to Pacific Daylight Time (PDT, UTC−7). This switch is mandated by US federal law under the Energy Policy Act of 2005, which set DST to run from the second Sunday in March through the first Sunday in November.

When people in India search “IST to PST,” they almost always mean whichever US Pacific offset is currently active — PST in winter, PDT in summer. This converter handles both automatically.

States on Pacific time: California, Washington, Oregon, and Nevada (most of). Parts of Idaho also observe Pacific time.

Best Times to Schedule Meetings Between IST and PST

The IST–PST gap is the largest among the major India-US conversions (12.5 to 13.5 hours), making real-time overlap during standard business hours nearly impossible. Two practical windows exist from the India side.

Option A — IST evening (US Pacific early morning):

Option B — IST late night / early morning (US Pacific previous afternoon/evening):

Recommended window: 7:00 PM – 8:30 PM IST. This equals 5:30 AM – 7:00 AM PST (or 6:30 AM – 8:00 AM PDT) — early for the US Pacific side, but workable, and it avoids asking the India team to stay up past midnight. A 7:30 PM IST call is the most commonly used solution for India–US West Coast remote teams.

How the Converter Calculates IST to PST

The converter processes your IST input in the following order:

1. Take the India date and time you enter
2. Convert IST (UTC+5:30) to UTC by subtracting 5 hours 30 minutes
3. Check whether the resulting UTC date falls within US Daylight Saving Time (second Sunday in March through first Sunday in November in US local time)
4. Apply the correct US Pacific offset — UTC−8 for PST, UTC−7 for PDT
5. Display the result with both the US time and the applicable offset

This date-aware approach is why the converter gives accurate results year-round, unlike simple converters that always subtract the same fixed number of hours.

The formulas:

• IST → Fixed PST: subtract 13 hours 30 minutes
• IST → PDT: subtract 12 hours 30 minutes

Need to Convert PST to IST Instead?

If you are starting from US Pacific time and need the India equivalent, use the forward converter:

→ PST to IST Converter

Quick reference:

IST to PST — Frequently Asked Questions

What is the time difference between IST and PST?

IST is 13 hours and 30 minutes ahead of PST (Pacific Standard Time, UTC−8). During US Daylight Saving Time (PDT, UTC−7), which runs from the second Sunday in March through the first Sunday in November, IST is 12 hours and 30 minutes ahead of Pacific time. India’s IST is fixed at UTC+5:30 year-round — the seasonal change comes entirely from the US switching between PST and PDT.

What is 9 PM IST in PST?

9:00 PM IST equals 7:30 AM PST during US winter (fixed PST). During US summer (PDT), 9:00 PM IST equals 8:30 AM PDT.

What is 8 PM IST in PST?

8:00 PM IST equals 6:30 AM PST during US winter. During US summer (PDT), 8:00 PM IST equals 7:30 AM PDT. This falls within the best IST-to-PST meeting overlap window.

What is 10 PM IST in PST?

10:00 PM IST equals 8:30 AM PST during US winter. During US summer (PDT), 10:00 PM IST equals 9:30 AM PDT.

What is 11 PM IST in PST?

11:00 PM IST equals 9:30 AM PST during US winter. During US summer (PDT), 11:00 PM IST equals 10:30 AM PDT.

What is midnight (12 AM) IST in PST?

12:00 AM IST equals 10:30 AM PST on the US side during US winter. During US summer (PDT), midnight IST equals 11:30 AM PDT.

Why does the US West Coast offset keep changing from India’s perspective?

The US West Coast alternates between PST (UTC−8) and PDT (UTC−7) due to Daylight Saving Time, observed from the second Sunday in March through the first Sunday in November. India does not change its clocks, so IST stays at UTC+5:30 permanently. From India’s perspective, the US West Coast simply shifts one hour earlier for roughly 8 months of the year.

How do I convert IST to PST manually?

To convert IST to fixed PST, subtract 13 hours and 30 minutes from your IST time. If the result crosses midnight, it falls on the previous calendar day in the US. During US Daylight Saving Time (PDT, mid-March through early November), subtract only 12 hours and 30 minutes instead. Use the converter above to handle DST automatically.

What is the PST equivalent of 5:30 AM IST?

5:30 AM IST equals 4:00 PM PST on the previous calendar day during US winter. During US summer (PDT), 5:30 AM IST equals 5:00 PM PDT the previous day.

What time should I schedule a call from India for a US West Coast morning meeting?

For a 9:00 AM PST meeting in the US, join at 10:30 PM IST during US winter. For a 9:00 AM PDT meeting in US summer, join at 9:30 PM IST. The 7:00 PM – 8:30 PM IST window generally covers the earliest practical US West Coast start times (5:30 AM – 7:00 AM Pacific) for teams willing to start very early on the US side.

What is 11 AM IST in PST?

11:00 AM IST equals 9:30 PM PST on the previous calendar day during US winter. During US summer (PDT), 11:00 AM IST equals 10:30 PM PDT the previous day.

What is 12 PM IST in PST?

12:00 PM (noon) IST equals 10:30 PM PST on the previous calendar day during US winter. During US summer (PDT), noon IST equals 11:30 PM PDT the previous day.

What is 1 PM IST in PST?

1:00 PM IST equals 11:30 PM PST on the previous calendar day during US winter. During US summer (PDT), 1:00 PM IST equals 12:30 AM PDT on the same day.

What is 7 PM IST in PST? 7:00 PM IST equals 5:30 AM PST during US winter. During US summer (PDT), 7:00 PM IST equals 6:30 AM PDT. This is one of the earliest workable times for India to reach the US West Coast.

Is San Francisco time behind India?

Yes. San Francisco (Pacific Time) is always behind India (IST) — by 13 hours and 30 minutes during US winter (PST), or by 12 hours and 30 minutes during US summer (PDT). India is never behind San Francisco, because India does not observe Daylight Saving Time while the US does.

What time is it in San Francisco right now compared to India?

San Francisco is always either 12 hours 30 minutes or 13 hours 30 minutes behind India, depending on whether San Francisco is currently on Pacific Standard Time (PST, UTC−8, used November through mid-March) or Pacific Daylight Time (PDT, UTC−7, used mid-March through November). India’s IST (UTC+5:30) never changes, so only the US side determines which gap applies on a given date. Use the live converter above for the exact current time in both locations.

Does the IST to PST time difference change during the year?

Yes, but only because of the US side. The IST to PST difference is 13 hours 30 minutes during US winter (when Pacific Time is PST, UTC−8) and 12 hours 30 minutes during US summer (when Pacific Time is PDT, UTC−7). India’s offset stays at UTC+5:30 every day of the year. The transition dates are the second Sunday in March (gap narrows to 12:30) and the first Sunday in November (gap widens back to 13:30).

What is 6 AM IST in PST? 6:00 AM IST equals 4:30 PM PST on the previous calendar day during US winter. During US summer (PDT), 6:00 AM IST equals 5:30 PM PDT the previous day. This pairing is useful for India-based teams checking what time it was on the US West Coast the evening before.

About IST and PST

Indian Standard Time (IST) is UTC+5:30 — one of a small number of world time zones with a half-hour offset. India uses a single time zone despite spanning roughly 30 degrees of longitude, a policy in place since 1905. IST is fixed and never adjusts for daylight saving. According to the IANA Time Zone Database, the official identifier for Indian Standard Time is Asia/Kolkata.

Pacific Time covers the western United States and Canada, identified in the IANA Time Zone Database as America/Los_Angeles. It alternates between Pacific Standard Time (UTC−8:00) during autumn and winter and Pacific Daylight Time (UTC−7:00) during spring and summer, following US federal law under the Energy Policy Act of 2005. Major technology companies headquartered on the US West Coast operate on Pacific time, making PST/PDT a frequent reference point for India’s IT and software services industry.

The U.S. Federal Aviation Administration’s official time zone table confirms Pacific Standard Time as UTC−8 and Pacific Daylight Time as UTC−7.

Author & Methodology

Author: CalculatorGeek Editorial Team

Reviewed by: CalculatorGeek Technical Review Team

Last reviewed: June 2026

Methodology: This converter uses IANA timezone identifiers (Asia/Kolkata for IST, America/Los_Angeles for Pacific time), date-aware offset logic, and US Daylight Saving Time rules to correctly show whether Pacific time is PST (UTC−8) or PDT (UTC−7) for any date entered.

References:

• IANA Time Zone Database — official source for UTC offsets, timezone identifiers, and DST transition dates for all world time zones
• MDN Web Docs — Intl.DateTimeFormat — browser implementation of IANA timezone formatting
• India Standard Time — confirms IST is UTC+5:30 with no Daylight Saving Time observance
• U.S. Federal Aviation Administration time zone table — official confirmation of PST as UTC−8 and PDT as UTC−7
• Energy Policy Act of 2005 — US federal law establishing current Daylight Saving Time start and end dates

Also useful:

• PST to IST Converter
• IST to EST Converter
• EST to IST Converter
• All Time Zone Converters