KST to PST Converter

Category: Time Zone Converters

- June 29, 2025

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Korea Standard Time (KST)

UTC+9 • Seoul, Busan, Incheon

Conversion Settings

Configure your timezone conversion preferences

Auto Convert

Daylight Saving Aware

Show UTC Offset

Show Seconds

Pacific Standard Time (PST)

UTC-8 • Los Angeles, San Francisco, Seattle

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (KST): +09:00

UTC Offset (PST): -08:00

DST Status: --

KST Time: --

PST Time: --

Time Format:

Current KST: --:--:--

Current PST: --:--:--

🇰🇷 KST is UTC+9 and never observes daylight saving time. PST is UTC-8 (winter) or PDT UTC-7 (summer). KST is 17 hours ahead of PST, 16 hours ahead of PDT.

KST to PST Conversion Guide

What is KST to PST Conversion?

KST to PST conversion helps you translate time between Korea Standard Time and Pacific Standard Time zones. KST is always UTC+9 and never changes for daylight saving time. PST is UTC-8 during winter months (November to March) and becomes PDT (UTC-7) during summer months (March to November). The time difference varies: KST is 17 hours ahead of PST and 16 hours ahead of PDT.

Time Zone Information

Korea Standard Time (KST): Used throughout South Korea including Seoul, Busan, Incheon, and Daegu. Always UTC+9 with no daylight saving time adjustments ever implemented.

Pacific Standard Time (PST): Used on the US West Coast during winter months. UTC-8 from November to March. Switches to PDT (UTC-7) during summer months.

Time Difference: KST is 17 hours ahead of PST (winter) and 16 hours ahead of PDT (summer). This large difference often means dates change between the zones.

Daylight Saving Time Impact

Korea: Never observes daylight saving time - KST remains UTC+9 throughout the year

Pacific Time Zone: Observes PST (UTC-8) from November to March, then PDT (UTC-7) from March to November

Variable Difference: The time difference changes twice per year: 17 hours during PST period, 16 hours during PDT period

Common Conversion Examples

Business Hours (Winter)

KST 9:00 AM → PST 4:00 PM (previous day)

KST 6:00 PM → PST 1:00 AM (same day)

17-hour difference during PST period

Business Hours (Summer)

KST 9:00 AM → PDT 5:00 PM (previous day)

KST 6:00 PM → PDT 2:00 AM (same day)

16-hour difference during PDT period

Meeting Planning

Best KST Time: 10:00 PM - 12:00 AM

Converts to PST/PDT: 5:00-7:00 AM

Challenging overlap due to large difference

Date Line Crossing

KST Monday 3:00 AM → PST Sunday 10:00 AM

KST Tuesday 2:00 AM → PDT Monday 10:00 AM

Often crosses date line

Conversion Tips & Best Practices

• Always check if Pacific Time is currently PST (winter) or PDT (summer) for accurate conversion

• KST is nearly a full day ahead, so date changes are very common in conversions

• Business meeting overlap is limited - early morning PST/PDT equals late evening KST

• Korea never observes daylight saving time, making KST calculations consistent year-round

• Pacific Time Zone includes major cities like Los Angeles, San Francisco, and Seattle

• Consider using 24-hour format to avoid AM/PM confusion with such large time differences

Flip Between Korea and Pacific Time

Trying to figure out what time it is in Los Angeles when you're scheduling a meeting from Seoul? Or maybe you’re in San Francisco and need to reach someone in Busan during office hours. That’s where this KST-PST Time Converter steps in. Whether you're working with a remote team, managing international events, or just trying to call a friend without waking them up at 3 AM, this tool makes it simple to line up time zones.

Set it and see the difference instantly

This tool lets you convert any date and time between Korea Standard Time (KST) and Pacific Time (PST or PDT) with just a couple of clicks. The moment you select your date and time, the converter shows you the equivalent in the other zone, including whether daylight saving is in effect and what the actual offset is in hours.

How to use it without guessing

Pick your starting time zone

You’ll see a drop-down labeled with either KST or PST depending on what’s selected. You can swap back and forth with the ⇄ button, which flips the direction of the conversion. Start by choosing the zone you're in or the time you want to convert from.

Select your date and time

Use the calendar and clock input fields to set the specific moment you’re working with. It can be in the past or future, depending on your need. Once both are selected, the converter will either auto-update or wait for you to hit the Convert button.

Check the result at a glance

The converted time appears instantly along with the day of the week and whether it's PST or PDT. It also tells you the total hour difference, the UTC offsets for both zones, and whether daylight saving time is affecting the result.

More than a basic calculator

Auto Convert

When enabled, this option updates the result every time you change the date or time without having to click anything. Handy when you're adjusting a meeting and want to test multiple slots quickly.

Daylight Saving Aware

Keep this on if you want the converter to account for the U.S. daylight saving shift. It will switch between PST and PDT depending on the date. Turn it off if you’re working with regions that don’t follow it or want to ignore it entirely.

Show UTC Offset

If you need to reference or compare the raw offset, this checkbox displays the +09:00 and -08:00 (or -07:00) values directly. This is especially useful if you’re copying data to a spreadsheet or aligning with other global zones.

Seconds and time format

Need precision? The “Show Seconds” option will add seconds to all time displays. Prefer military time? Switch between 12-hour and 24-hour formats with a single click at the bottom of the calculator.

Real-world uses: from Seoul to Silicon Valley

If you're in Seoul and planning a video call with a team in San Francisco, this converter keeps things smooth. Let’s say it’s Tuesday at 10 AM in Korea. You’ll find out that’s Monday 6 PM in California (or 5 PM, depending on daylight saving). That’s perfect if your partners are wrapping up their workday and you’re just starting yours.

Small buttons that make a big difference

“Now” button

Instantly fills in the current time for the selected zone so you can check what time it is right now in the other location.

“Reset” button

Brings everything back to default in one click. Good for clearing the slate when starting a new check.

Keyboard shortcuts

If you use this converter regularly, it even listens to keyboard shortcuts. For example, hitting “R” resets the tool, and “F” toggles the time format. It’s subtle, but those small touches make repeated use a lot smoother.

Keep schedules aligned across oceans

This KST-PST converter is built to help you avoid the confusion that time zones can bring, especially when dates shift due to the International Date Line. Whether you're setting up interviews, planning webinars, or just double-checking if it's too early to call, this tool gives you clarity with zero fuss. No mental math. No wrong-day surprises. Just clean answers when you need them.

KST to PST Converter

Korea Standard Time (KST)

Conversion Settings

Pacific Standard Time (PST)

KST to PST Conversion Guide

What is KST to PST Conversion?

Time Zone Information

Daylight Saving Time Impact

Common Conversion Examples

Conversion Tips & Best Practices

Flip Between Korea and Pacific Time

Set it and see the difference instantly

How to use it without guessing

Pick your starting time zone

Select your date and time

Check the result at a glance

More than a basic calculator

Auto Convert

Daylight Saving Aware

Show UTC Offset

Seconds and time format

Real-world uses: from Seoul to Silicon Valley

Small buttons that make a big difference

“Now” button

“Reset” button

Keyboard shortcuts

Keep schedules aligned across oceans

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