The honest answer is: longer than most apps tell you, shorter than you probably fear.
Korean is categorized as a Category IV language by the US Foreign Service Institute. Their hardest tier, alongside Arabic, Chinese, and Japanese. The FSI estimate for English speakers is 2,200 hours to professional working proficiency. That sounds terrifying. But you don't need professional proficiency. Let's break it down into goals you might actually have.
Realistic milestones
Week 1 to 2: Read Hangul Anyone can learn to read Korean characters in 1 to 2 weeks of consistent practice. This is not fluency. You're just decoding symbols. But it's a meaningful milestone and faster than any other East Asian script.
Month 1 to 3: Survival Korean ~50 to 100 hours of study. You can introduce yourself, order food, buy things, ask directions, and handle simple transactions. You know numbers, basic particles, and about 300 words.
Month 3 to 6: Basic conversation ~150 to 300 hours. You can talk about your life, ask and answer simple questions, understand slow speech on familiar topics. TOPIK Level 1 is achievable. About 800 words.
Month 6 to 12: Intermediate ~300 to 500 hours. You follow most of a drama with some unknowns, hold conversations with patient speakers, read simple texts. TOPIK Level 2 to 3. About 2,000 words.
Year 1 to 2: Comfortable intermediate ~500 to 1,000 hours. You can watch Korean content without subtitles (with effort), have real conversations on most topics, read webtoons and basic articles. About 4,000 to 5,000 words.
Year 2 to 4: Advanced / near-fluent ~1,000 to 2,000 hours. Natural conversation, wide media comprehension, writing ability, cultural nuance. ~10,000+ words.
What makes the biggest difference
1. Daily study beats marathon sessions 30 minutes every day beats 3 hours on weekends. Language is built through repetition over time. Your brain consolidates vocabulary and grammar during sleep. Frequency matters more than total hours.
2. Output accelerates everything Reading and listening (input) are necessary. Speaking and writing (output) are what cause you to actively retrieve knowledge. Even journaling in Korean or speaking to yourself forces your brain to produce language, not just recognize it.
3. Comprehensible input Reading and listening to material you understand 70 to 90% of is the most efficient input. Too easy = no new learning. Too hard = comprehension fails. Korean dramas at the right level are incredibly effective.
4. Consistency over intensity Burning through a course in one month and then stopping for two months is far less effective than studying steadily for three months.
5. Your motivation source People motivated by K-pop, K-drama, or a Korean partner study more consistently than people who feel they "should" learn Korean. Whatever your real reason. Lean into it.
Why Korean is hard for English speakers
- No shared vocabulary: almost no cognates with English (unlike Spanish or French)
- Different word order: verb-last, not verb-second
- Particles: grammatical function markers have no English equivalent
- Speech levels: you speak differently based on social relationship
- Honorific vocabulary: separate words for the same actions depending on who's doing them
These are real challenges. They're also learnable. Millions of non-Koreans have done it.
What to prioritize
First 30 days: Hangul, basic survival phrases, numbers, particles (이/가, 을/를, 은/는, 에, 에서)
Days 30 to 90: Core verbs, sentence structure, ~아/어요 conjugation, ~고 싶다, ~ㄹ/을 수 있다, counters
Months 3 to 6: Speech levels, honorifics, ~면/으면, ~아서/어서, ~니까, past tense, negation patterns
Ongoing: Vocabulary building, listening practice, speaking practice
The learners I see make the fastest progress are not the ones who study hardest in short bursts. They're the ones who build a daily habit, enjoy the content they're consuming, and let time do the compounding.
A structured Korean course's SNU-based curriculum is sequenced for exactly this kind of steady progression. Not gamified streaks, but actual grammar and vocabulary in the order you need them. That's why I recommend it to my students as a daily companion to lessons.