I Was Only Running a Korean Blog, But After Adding English — My AdSense Revenue Actually Doubled

Let me be honest with you. I spent a good while putting all my effort into just a Korean blog. But no matter how much I wrote, my AdSense earnings were stuck at around 30,000–50,000 KRW per month. Then I started running an English blog alongside it, and within 6 months, my income more than doubled. Today, I'm going to share exactly how I did it. You don't need to be good at English. Seriously.

① First, Understand Why an English Blog Can Double Your Revenue

The biggest difference between a Korean blog and an English blog is the ad cost-per-click (CPC). The average CPC on a Korean blog is typically around 50–200 KRW, but on an English blog, the same topic can fetch anywhere from 500 to 3,000 KRW per click. That's because advertisers from English-speaking countries like the United States, Canada, the United Kingdom, and Australia run ads at much higher rates.

Here's an example. If you write a post in Korean about "how to build wealth," you might earn around 100 KRW per click. But if you write in English about "how to invest money in your 30s," it's entirely possible to earn 1,000–2,000 KRW per click. Even with the exact same number of visitors, your revenue could be more than 10 times higher.

• Average CPC for Korean blogs: 50–200 KRW
• Average CPC for English blogs: 500–3,000 KRW
• Finance, insurance, health, and legal categories pay especially high rates when written in English
• Traffic comes from around the world, so overall visitor numbers increase as well

Once you understand this, you'll immediately see why running an English blog alongside your Korean one is the core of any revenue strategy. If you're currently running a Korean blog, don't give it up — the answer is to create an additional English blog.

② You Don't Need to Be Good at English — Here's How to Write Posts Using AI

This is where most people get stuck. "But my English isn't good enough..." I felt the same way. But now, using a combination of ChatGPT and translation tools, I'm putting out 1–2 English posts a day. The method is much simpler than you'd think.

Here's what to do:

• Step 1: Start by jotting down the topic and key points you want to write about in Korean. (Example: "How a salaried worker in their 30s can start investing in ETFs for the first time")
• Step 2: Enter this into ChatGPT → "Write a 1000-word blog post for beginners about how to start ETF investing in your 30s. Use a friendly, conversational tone."
• Step 3: Translate the output into Korean using DeepL to verify the content is accurate.
• Step 4: Correct anything that's wrong or doesn't apply to the Korean context, then publish.

At first, the review process might take 30 minutes to an hour. But once you get the hang of it, you can finish in under 20 minutes. The key isn't perfect English — it's useful information that shows up in search results. Google cares less about whether a native speaker or an AI wrote it, and more about whether the content is genuinely helpful to readers.

For platforms, I recommend either Blogger (free) or a WordPress + Bluehost combination. A great approach is to start with Blogger to get a feel for things, then migrate to WordPress once you start seeing income.

③ Here's How to Divide Topics Between Your Korean and English Blogs

Just because you've created a separate English blog doesn't mean you should abandon your Korean one. Run both in parallel, but the key is to position each blog around different topics.

Topics better suited for a Korean blog:

• Korea-specific information (government subsidies, housing subscriptions, domestic app reviews)
• Korean daily life, food, and travel (targeting a domestic audience)
• Topics that require Naver search optimization

Topics better suited for an English blog (high-CPC categories):

• Personal Finance: Saving, investing, getting out of debt
• Health & Wellness: Dieting, mental health, sleep
• AI Tool Reviews & How-Tos: ChatGPT, Notion AI, automation tools
• Remote Work & Side Hustles: Massive global demand in this space

Here's how to approach it. Look at the topics you're currently covering on your Korean blog and ask yourself, "Is there an English version of this topic?" For example, if you're writing about "best side jobs for office workers" in Korean, simply start building up your English blog with posts like "best side hustles for office workers." You're not creating something completely new — you're just making an English version of what you already know.

④ A Realistic Timeline and Management Routine for When Revenue Actually Starts Coming In

Let me be upfront about what to expect. It typically takes 3 to 6 months for Google SEO to take hold on an English blog. For the first 2–3 months, you'll have almost no traffic. That's exactly why so many people give up during this period. Sticking it out is the strategy.

A realistic timeline:

• Months 1–2: Build up 20–30 posts. Almost no traffic. Don't be discouraged.
• Month 3: Start appearing in Google Search Console. 10–50 visitors per day.
• Months 4–5: AdSense revenue begins. Around 10,000–50,000 KRW per month.
• Month 6 and beyond: As posts accumulate and keywords rank, 100,000–300,000 KRW+ per month becomes achievable.

Set up your management routine like this. Aim to publish one English post, three times a week. If you try to post on both your Korean and English blogs on the same day, you'll burn out fast. For example, dedicating Monday, Wednesday, and Friday to your English blog and Tuesday and Thursday to your Korean blog makes the whole thing far more sustainable.

Also, make sure to connect both Google Search Console and Google Analytics. Once data starts building up — which countries are reading your posts, which keywords are bringing people in — it becomes so much easier to choose topics for your next posts. From there, it's just a matter of writing more content around the topics that are already performing well.

Just Do This One Thing Right Now

After reading this post today, try doing just one thing.

Go to Blogger.com right now and create an English blog. All you need to do is give it a name and ask ChatGPT to write your first post topic. It doesn't have to be perfect. Your only goal for today is one thing: make your English blog exist.

Doubling your revenue isn't about some grand strategy. It's simply about taking your hard work on a Korean blog and placing one English blog right beside it. Since you already know how to run a blog, you'll adapt faster than you think. Start today, and your income six months from now will look very different.