PST to IST Converter: Pacific Time to India Standard Time

How to use the pst to ist converter

1. Select the conversion direction: Pacific Time to IST or IST to Pacific Time.
2. Enter the date in YYYY-MM-DD format so the tool can detect whether PST or PDT applies.
3. Enter the time in 24-hour HH:MM format.
4. Read the converted time, including the target date if it crosses midnight.

How the conversion works

Pacific Standard Time (PST) is UTC-8, while India Standard Time (IST) is UTC+5:30. The difference is exactly 13 hours and 30 minutes. During Pacific Daylight Time (PDT), which runs from the second Sunday in March to the first Sunday in November in most years, Pacific Time shifts to UTC-7, making the gap 12 hours and 30 minutes.

This pst to ist converter uses the JavaScript Intl.DateTimeFormat API with the America/Los_Angeles and Asia/Kolkata time zone identifiers. That means it relies on your browser's built-in IANA time zone database rather than hard-coded DST rules, so it stays accurate even when governments change their daylight saving schedules.

For example, converting 9:00 AM PST on January 15 to IST: add 13 hours and 30 minutes to get 10:30 PM IST the same day. Converting 2:00 PM PDT on July 15 to IST: add 12 hours and 30 minutes to get 2:30 AM IST the next day.

Common Pacific to India time conversions

The table below shows typical working-hour conversions during both PST (winter) and PDT (summer). Use it as a quick reference alongside the calculator above.

Notice that during PDT the IST equivalent is one hour earlier, which often makes scheduling slightly easier for teams spanning both regions.

Practical use cases

Software teams with engineers in California and India rely on this kind of conversion daily. A standup at 9:00 AM PST lands at 10:30 PM IST, which is late but still workable. Moving it to 8:00 AM PST gives India 9:30 PM, a more reasonable hour.

Freelancers billing clients across these zones need to confirm deadlines accurately. If a deliverable is due by 5:00 PM IST on Friday, that is 3:30 AM PST or 4:30 AM PDT on the same Friday in the US.

For broader multi-zone scheduling, the world time meeting planner handles three or more locations at once. If you also work with US Eastern Time, the est time converter covers that offset, and the central to eastern time converter handles domestic US shifts.

Why the date field matters

Pacific Time is not a single fixed offset. It alternates between PST (UTC-8) and PDT (UTC-7) depending on the time of year. Without a date, a converter cannot know which offset to apply, leading to errors of exactly one hour.

India does not observe daylight saving time, so IST remains UTC+5:30 year-round. The only variable in this pst to ist converter is therefore the Pacific side of the equation.

The transition dates follow US federal rules: clocks spring forward on the second Sunday in March and fall back on the first Sunday in November. By passing the full date into the Intl formatter, the tool resolves the correct offset automatically, including edge cases like the brief window on transition days.

Common mistakes to avoid

Assuming a flat 13.5 hour difference all year is the most frequent error. During PDT the gap shrinks to 12.5 hours. Always specify the date when converting.

Another pitfall is confusing 12-hour and 24-hour input. Entering "2:00" intending 2:00 PM but having the parser read it as 2:00 AM shifts the result by 12 hours. This tool requires 24-hour format (e.g., 14:00) to eliminate that ambiguity.

Finally, remember that crossing midnight changes the calendar date. A late afternoon meeting in Pacific Time often falls on the next calendar day in India. The output rows always show the resulting date so you can verify.

Worked examples

Each result below was produced by the same code the tool runs, so you can check your own numbers against them.