How to Learn Hangul in a Day: The Korean Alphabet Explained

← All posts

In 1446, the scholar Jeong In-ji wrote the closing essay of the book that gave Korea its new alphabet, and in it he made a bold promise. A wise person, he wrote, could learn the letters before the morning was over, and even a slow one within ten days.

Nearly six hundred years later the promise still more or less holds. A beginner with no Korean at all can learn to sound out Hangul in about a day. It is worth being clear about what that means, though. After a day you will look at 사과 and say sagwa. You will not know it means “apple” until someone tells you. Reading the script and understanding the language are two different jobs, and only the first one fits in a day.

That first job is easier than it looks, because Hangul was designed, on purpose, to be learned.

An alphabet with an author

Most writing systems grew slowly over centuries. Hangul has an author and a date. King Sejong created it in 1443 and published it in 1446 in a document called the Hunminjeongeum, “the correct sounds for the instruction of the people”. Until then Koreans wrote in Chinese characters, which took years of study that most people could not afford. Sejong’s preface says he made twenty-eight letters so that everyone could learn them easily and use them every day.

Modern Korean uses 24 of them as its basic letters: 14 consonants and 10 vowels. Add five double consonants and eleven compound vowels, all built from the basic ones, and you have the 40 letters a beginner meets. South Korea still celebrates the script every year on 9 October, Hangul Day.

The consonants are pictures of your mouth

The five basic consonant shapes show where in the mouth the sound is made. The commentary published with Sejong’s letters, the Hunminjeongeum Haerye, explains each one:

The rest follow one rule: add a stroke and the sound gets stronger. ㄱ (g) gains a stroke and becomes ㅋ, a k said with a puff of air. ㄷ becomes ㅌ, ㅂ becomes ㅍ and ㅈ becomes ㅊ, each the puffed version of the one before. Write a letter twice, side by side, and you get a tense sound with no puff at all: ㄲ is the k in “skin”, ㅃ the p in “spin”.

Only ㄹ stands apart: a light flap between r and l. So you are not memorising nineteen unrelated shapes. You are learning five pictures, two rules and one odd one out.

The vowels: a dot, a line, a person

The vowels are built from three ideas: a dot for heaven, a flat line for the earth and an upright line for a person. The dot has since become a short stroke, and where it sits tells you the sound.

Read the pattern down the table. A stroke to the right of the upright line is a, to the left is eo. A stroke above the flat line is o, below it is u. Double the stroke and a y slides in front: ㅏ a, ㅑ ya. The compound vowels are two of these written together: ㅗ and ㅏ make ㅘ, wa.

Letters stack into blocks

This is the part that makes Korean look harder than it is. Hangul is an alphabet, but it is not written in a row. The letters of each syllable are packed into a square block, and the blocks sit side by side. Three rules cover it.

A block always starts with a consonant. If the syllable starts with a vowel sound, the silent ㅇ holds the place: ㅇ + ㅏ is 아, just a.

Tall vowels go to the right, flat ones go underneath. ㄱ + ㅏ makes 가. ㅋ + ㅗ makes 코.

A final consonant goes at the bottom. ㅎ + ㅏ + ㄴ makes 한.

Look at the ㅇ in 우유 and 가방: silent at the top of a block, ng as in “sing” at the bottom. A few consonants change at the end of a block, too. ㄱ closes as k, which is why 한국 ends in a k. ㄷ and ㅅ close as t, ㅂ as p, and ㄹ as l.

What a day can do, and what it can’t

A realistic day, for someone starting from nothing, looks like this.

Morning: the consonants. Learn them by family, from the five base shapes. Say each one out loud. Ignore the letter names for now (ㄱ is called 기역, giyeok); they are for spelling words aloud, not for reading.

Midday: the ten vowels. They go quickly, because the shapes explain themselves.

Afternoon: blocks and words. Read real words slowly, letter by letter. Start with ones you already know: 커피 (keopi), 김치 (gimchi), 라면 (ramyeon). The first time a familiar word comes out of your own mouth, the script stops looking like decoration.

Evening, or tomorrow: the double consonants and compound vowels. They are made of letters you already know. Leaving them for a second day is fine.

Write as you go. Tracing a letter by hand fixes its shape far better than looking at it, and a few letters, such as ㅈ and ㅎ, look different handwritten than in print. And drop the romanization as soon as you can. It is a crutch: ㅓ is written eo, which looks like two sounds and is one.

What a day will not give you is speed, meaning, or the sound changes that happen where blocks meet. Read 감사합니다, “thank you”, letter by letter and you get gam-sa-hap-ni-da. Koreans say gamsahamnida. Patterns like that come with listening, over weeks. That is normal, and it does not undo the day. You can sound out a word now, and that is the door to everything else.

Where Hangul Path comes in

Hangul Path starts exactly here. Its first stage, Hangul, teaches all 40 letters in ten short lessons of four letters each. Its first part, Basic letters, covers the 14 consonants and 10 vowels. The second, Double and compound letters, covers ㄲ ㄸ ㅃ ㅆ ㅉ and the 11 compound vowels.

Each letter gets one page: tap Hear it to hear the sound, watch the letter join a vowel into a syllable, then trace it with your finger. Where the handwritten letter differs from print, the page says so. Every lesson ends with a quick check and a recap.

If you can already read a little, a placement check gives you ten words made only of the basic letters, to read or to pick out by ear. Get eight right and the app marks the basic letters as done and opens Unit 1. The double letters and compound vowels stay optional either way.

The whole Hangul stage is free, and so are Units 1 and 2, greetings and introductions. Reviewing anything you have already learned is never locked. After the Hangul stage come nine more, with 70 units in all. Hangul Path is on iPhone, iPad and Android.