KST to IST Converter

Category: Time Zone Converters

- July 07, 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

India Standard Time (IST)

UTC+5:30 • Mumbai, Delhi, Bangalore

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (KST): +9

UTC Offset (IST): +5:30

DST Status: --

KST Time: --

IST Time: --

Time Format:

Current KST: --:--:--

Current IST: --:--:--

🌍 KST is always UTC+9 and IST is always UTC+5:30. Both zones never observe daylight saving time.

KST to IST Conversion Guide

What is KST to IST Conversion?

KST to IST conversion helps you translate time between Korea Standard Time and India Standard Time. KST is always UTC+9 year-round and IST is always UTC+5:30 year-round. The time difference is constant at 3 hours and 30 minutes, with KST being ahead of IST.

Time Zone Information

Korea Standard Time (KST): Used throughout South Korea. Always UTC+9, no daylight saving time since 1988.

India Standard Time (IST): Used throughout India. Always UTC+5:30, no daylight saving time.

Time Difference: KST is consistently 3 hours and 30 minutes ahead of IST year-round.

Consistent Time Relationship

Fixed Difference: The 3.5-hour difference never changes as both countries avoid daylight saving time

Business Advantage: Predictable scheduling makes business coordination easier between Korea and India

Half-Hour Offset: India's unique UTC+5:30 creates the unusual 3.5-hour time difference

Common Conversion Examples

Business Hours (KST to IST)

KST 9:00 AM → IST 5:30 AM

KST 5:00 PM → IST 1:30 PM

3.5-hour constant difference

Business Hours (IST to KST)

IST 9:00 AM → KST 12:30 PM

IST 5:00 PM → KST 8:30 PM

Perfect for afternoon meetings

International Calls

KST 2:00 PM → IST 10:30 AM

KST 7:00 PM → IST 3:30 PM

Good overlap for business calls

Tech Support Hours

KST 10:00 AM → IST 6:30 AM

KST 6:00 PM → IST 2:30 PM

Ideal for tech collaboration

Conversion Tips & Best Practices

• KST is always 3 hours and 30 minutes ahead of IST - this never changes throughout the year

• Neither Korea nor India observes daylight saving time, making scheduling predictable

• Best meeting times: KST 2-6 PM corresponds to IST 10:30 AM - 2:30 PM

• India's half-hour offset (UTC+5:30) creates the unique 3.5-hour difference

• KST covers all of South Korea including Seoul, Busan, and Incheon

• IST covers all of India including Mumbai, Delhi, Bangalore, and Chennai

KST to IST Time Converter

If you're trying to plan meetings, schedule calls, or keep track of deadlines between South Korea and India, you're in the right spot. This tool takes the confusion out of comparing Korea Standard Time (KST) and India Standard Time (IST). To help you get started, here’s a quick look at which countries use each time zone.

KST (UTC+9)	IST (UTC+5:30)
🇰🇷 South Korea	🇮🇳 India 🇱🇰 Sri Lanka

Built for people who plan across borders

This calculator was made for anyone who needs to line up time between KST and IST. Whether you're managing a remote team, calling family, or setting up interviews, it spares you from mental math or flipping between tabs. Everything happens right in one place with just a few clicks.

Using the converter is pretty straightforward

1. Start with your date and time

Pick the date and time in the box labeled either “Korea Standard Time” or “India Standard Time,” depending on what side you're starting from. You can choose either zone as your input using the dropdown just below the time.

2. Choose your settings

You’ve got some handy options to work with:

Auto Convert: Instantly shows results as you change the time
Daylight Saving Aware: It's checked by default, but neither India nor Korea uses daylight saving, so this doesn’t affect the outcome here
Show UTC Offset: If you want to see the numeric offset (like +5:30), check this on
Show Seconds: Want precise timing? Keep this on. Otherwise, turn it off for a cleaner look

3. Hit Convert

Once you’re set, click the Convert button. It will show you the exact time in the other time zone. You’ll see the formatted time, the date, the difference in hours, and each timezone’s UTC offset. If you want to flip directions, click the Swap button and the interface will adjust automatically.

4. Prefer 24-hour time?

Click the “12 Hour” button at the bottom of the converter to toggle between 12-hour and 24-hour formats. Your choice will update everything immediately.

Other buttons you might find helpful

Now: Grabs the current time based on the selected timezone and fills it in for you
Reset: Returns everything to default, perfect if you’ve made a mess of the settings or just want to start fresh

Here's a real-world use case

Let’s say you’re managing a project between Seoul and Chennai. You need to set up a recurring check-in that works for both teams. Using this tool, you can instantly see that a 2 PM meeting in Seoul is 10:30 AM in Chennai. That timing works well across both workdays, and there’s no surprise shift throughout the year, since neither country changes clocks.

What’s under the hood

The time difference is always 3 hours and 30 minutes. KST is ahead of IST. This tool uses that consistency to your advantage. Behind the scenes, it uses your selected date and time, applies the timezone difference, and shows the results in a friendly format. If you enter time in IST instead of KST, just select it from the dropdown and everything flips accordingly.

The display updates in real-time as long as Auto Convert is checked. If you’re entering something in the past or future, it still handles it smoothly. And if you’re wondering about daylight saving, there’s nothing to worry about.

A few helpful tips

If your time looks off, double-check that you’ve picked the correct input zone
The tool always shows live clocks for KST and IST near the bottom, those are useful if you just want a quick glance at the current difference
Shortcuts like hitting the spacebar or pressing “N” will also run a conversion or grab the current time if you prefer keyboard controls

Stay in sync across Seoul and Mumbai

Time differences don’t have to be tricky. This converter lets you line things up fast and accurately, whether it’s one call or an entire calendar. Save yourself the back-and-forth and get right to the point, what time is it there, really?