UTC to KST Converter

Category: Time Zone Converters

- July 11, 2025

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Coordinated Universal Time (UTC)

UTC+0 • London, Dublin, Reykjavik

Conversion Settings

Configure your timezone conversion preferences

Auto Convert

Show UTC Offset

Show Seconds

Korea Standard Time (KST)

UTC+9 • Seoul, Busan, Pyongyang

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (UTC): +0

UTC Offset (KST): +9

DST Status: --

UTC Time: --

KST Time: --

Time Format:

Current UTC: --:--:--

Current KST: --:--:--

🌏 KST is UTC+9 and remains constant year-round. South Korea does not observe daylight saving time.

UTC to KST Conversion Guide

What is UTC to KST Conversion?

UTC to KST conversion helps you translate time between Coordinated Universal Time and Korea Standard Time. KST is UTC+9 and remains constant throughout the year. South Korea does not observe daylight saving time, making conversions straightforward. The time difference is always 9 hours, with KST being ahead of UTC.

Time Zone Information

Coordinated Universal Time (UTC): The world time standard, successor to GMT. Used globally for coordination and synchronization. Always UTC+0.

Korea Standard Time (KST): Used in South Korea and North Korea year-round. Always UTC+9 with no seasonal adjustments.

Time Difference: KST is consistently 9 hours ahead of UTC throughout the entire year.

No Daylight Saving Time

Year-Round Consistency: KST maintains the same UTC+9 offset throughout all seasons

Simple Conversion: Always add 9 hours to UTC to get KST time

No Clock Changes: South Korea does not adjust clocks for daylight saving time

Common Conversion Examples

Business Hours

UTC 12:00 AM → KST 9:00 AM

UTC 8:00 AM → KST 5:00 PM

Standard business day conversion

International Meetings

UTC 1:00 AM → KST 10:00 AM

UTC 6:00 AM → KST 3:00 PM

Global coordination times

Server Timestamps

UTC 3:00 PM → KST 12:00 AM (next day)

UTC 11:59 PM → KST 8:59 AM (next day)

Date boundary handling

Gaming & Events

UTC 10:00 AM → KST 7:00 PM

UTC 2:00 PM → KST 11:00 PM

Online event scheduling

Conversion Tips & Best Practices

• KST is always UTC+9 with no seasonal time changes

• Add 9 hours to UTC to get KST time

• KST dates may advance when converting late UTC times

• KST is also used in North Korea and shares the same offset as JST (Japan Standard Time)

• UTC is the global standard for timestamps in computing and scientific applications

• KST simplifies scheduling as it never changes throughout the year

Your UTC to KST Time Converter

Trying to plan a meeting or log a server timestamp between London and Seoul? This converter is built for those exact needs. Whether you're syncing up with a team in South Korea or tracking project times globally, this tool makes it easy. To get a sense of how these time zones line up, check out the list of countries in each one below.

UTC (UTC+0)	KST (UTC+9)
🇬🇧 United Kingdom 🇮🇪 Ireland 🇮🇸 Iceland 🇸🇱 Sierra Leone 🇬🇲 The Gambia 🇬🇼 Guinea-Bissau 🇬🇳 Guinea 🇲🇱 Mali 🇲🇷 Mauritania 🇸🇳 Senegal 🇹🇬 Togo 🇧🇫 Burkina Faso 🇬🇭 Ghana 🇨🇮 Côte d'Ivoire 🇸🇭 Saint Helena	🇰🇷 South Korea 🇰🇵 North Korea

What this converter actually does

This is a live time calculator that converts back and forth between UTC and KST. It lets you enter a date and time in either zone, then gives you the exact equivalent in the other. It works in both directions, and you can flip the input/output zones instantly with the swap button.

You can choose the format (12-hour or 24-hour), include or hide seconds, and decide whether you want the UTC offset displayed. Live clocks for both time zones also update every second, so you’re never guessing.

Why you’d want to use it

If you work with people in South Korea, this is a no-brainer. Developers dealing with server logs, travelers setting reminders, remote teams juggling calls across continents. Since Korea doesn’t use daylight saving time, this tool keeps things clear and constant year-round. UTC to KST is always a clean 9-hour jump, which means no seasonal surprises.

How to use it step by step

1. Choose your input time zone

Pick either UTC or KST from the dropdown. The default is UTC.

2. Enter your date and time

Use the calendar and time inputs to plug in the time you want to convert. The tool will default to the current time if you click “Now.”

3. Get your result

Once you enter a valid time, the result will show in the other time zone. You’ll see both the converted time and date, plus detailed info like the UTC offsets and whether daylight saving time is in effect (spoiler: it's not for KST).

4. Customize the view

Auto Convert: Converts immediately as you type.
Show UTC Offset: Adds or hides the +0/+9 tag next to times.
Show Seconds: Toggle seconds on or off in display.
12/24 Hour Format: Flip between time formats anytime.

Swapping zones is just one click

The “Swap” button instantly flips the direction of conversion. If you were entering a time in UTC, now you’ll enter in KST, and get UTC as the output. The tool updates all labels, zones, and offsets so you don’t have to think about it twice.

Helpful example from real life

Let’s say you’re working from Accra, Ghana (UTC+0), and your engineering team is based in Busan, South Korea (UTC+9). You’re trying to set a call for 10:00 AM your time. Plug it into the converter, and you’ll see it’s 7:00 PM for them, just in time to wrap up their workday.

Features that work quietly in the background

Behind the scenes, the converter is tracking your inputs and updating instantly if auto-convert is on. It’s also calculating the correct date when time jumps past midnight in either zone. For example, if you enter 5:00 PM UTC, it will show you 2:00 AM the next day in KST. The logic is reliable, which is what makes it useful for timestamp accuracy in development work.

One tool, two clocks, zero confusion

This isn’t just about converting numbers. It’s about staying in sync with your global contacts without messing up your calendar. Whether you're coding, coordinating, or just curious, this tool keeps the UTC and KST relationship crystal clear. Set it once and forget the math.