🇰🇷 Best Korean websites for advanced learners

Unit 0 teaches Hangul and the units after it run all the way to advanced grammar, with thousands of example sentences, audio recordings and vocabulary lists — all free, with no account required. The explanations are unusually thorough and are the go-to reference when TTMIK's short lessons leave you unsatisfied. The site design is dated, the lessons are walls of text with no gamification, and the sheer length means you need real discipline to work through it.

Free official dictionary with definitions graded by learner level, grammar and usage notes on each entry, conjugation tables, and translations into a dozen languages. Because it is designed for learners rather than natives, definitions are simpler and the example sentences are chosen to teach. If you later want the full monolingual reference used by native speakers, the same institute runs the Standard Korean Language Dictionary at stdict.korean.go.kr.

Korean–English and Korean–Korean entries with thousands of real example sentences pulled from news and books, native audio, conjugation info and Hanja. The mobile app is excellent and works offline for core entries. Free. The interface is Korean-first and the volume of results is overwhelming at first — expect to learn how to read the entry layout before it becomes fast.

Run by the King Sejong Institute Foundation, this is a full state-funded curriculum with structured online courses, downloadable Sejong Korean textbooks, and practice tools, free after registration. Because it is the official course used by King Sejong Institutes worldwide, it lines up with TOPIK and with classroom study abroad. The platform is clunky, sign-up can be fiddly, and the production values are institutional rather than slick — but the content quality and the price are unbeatable.

The official monolingual dictionary of the National Institute of Korean Language — the final word on spelling, meaning, Hanja origin and standard usage. Switching to it is the point where you start defining Korean words in Korean, which sharpens nuance in a way bilingual entries cannot. Entirely in Korean with no learner scaffolding, so it is genuinely unusable below upper-intermediate.

A collaborative, Creative Commons-licensed corpus you can search for real usage of a word or download in bulk to build your own decks. It is the raw material behind Clozemaster and countless Anki decks rather than a study tool in itself. Sentences are contributed by volunteers, so quality and naturalness vary — prefer sentences from native contributors and cross-check anything surprising.

The government body that runs TOPIK publishes previous exam papers, answer keys and listening audio for free — the single most accurate way to gauge your level and to see exactly what the test asks. Registration and test dates are handled here too. The site is Korean-first and awkward to navigate, so most learners find the papers faster through TOPIK Guide.

Over 100 language editions; the English edition alone has millions of entries covering hundreds of languages, with IPA, declension and conjugation tables, etymologies and usage notes that commercial apps usually paywall. The etymology sections are quietly one of the best vocabulary-retention tools available. Being crowd-sourced, coverage is uneven and rare entries can be wrong — cross-check anything unusual against a native-language dictionary.

Type a word or phrase and it plays back real YouTube clips of people saying it in context, across 25 languages plus sign languages, so you get natural intonation and regional variation rather than an isolated dictionary recording. Free, donation-supported, no account needed. Complements Forvo: Forvo for single words, YouGlish for phrases and prosody.

A browser extension plus web reader covering 100+ languages: click a word or drag across a phrase, get an inline translation, and it becomes a flashcard automatically. The free tier gives unlimited single-word translations but caps phrases and AI explanations at 10 a day; Premium is $6/month. Simpler and cheaper than LingQ or Migaku if all you want is frictionless reading of articles and ebooks.

A detailed staged roadmap for acquiring a language through massive comprehensible input — what to do at each stage, when to start output, how to mine sentences — with a free tracker, starter courses and an active Discord. The roadmap and community are free; vocabulary decks, advanced courses and coaching are paid. It is opinionated to the point of dogma about avoiding early output and translation, so take the framework and ignore the purity rules if they do not fit your goals.

TTMIK's ten-level curriculum is the most widely recommended structured path in Korean self-study, taught conversationally by native speakers with free audio lessons and paid PDFs, workbooks and printed books. The lessons are friendly and short, which makes them easy to keep up with, and the grammar sequencing is genuinely well thought out. The site has moved most content behind course subscriptions over the years, so less is free than long-time learners remember, and the early levels are light on practice — pair them with a workbook or a tutor.

The long-running independent hub for TOPIK preparation, with free articles on exam structure and scoring, organised past papers, frequency vocabulary lists and level-by-level study advice; full mock tests and prep courses are paid. If you are taking TOPIK for a visa, university place or job, start here rather than on the official site. It is exam-focused by design, so it teaches you to pass a test rather than to hold a conversation.