Syllable Blocks
Hangul does not write letters in a line. Consonants and vowels stack inside one square block to form a syllable — and this single principle is all it takes to read Korean.
The Structure of a Syllable
Every syllable combines an initial consonant + a vowel + an optional final consonant (batchim). The vowel's shape decides the block layout.
Side by side
C | V
Vertical vowels (ㅏ, ㅓ, ㅣ) go to the right
Stacked
C / V
Horizontal vowels (ㅗ, ㅜ, ㅡ) go below
With batchim
C | V / F
The final consonant always sits at the bottom
Stacked + final
C / V / F
All three stack top to bottom
Frequently Asked Questions
How are Korean syllable blocks formed?
A Korean syllable is built as initial consonant + vowel + optional final consonant (batchim). Instead of writing letters in a line, they are arranged inside one square block. For example, ㅎ + ㅏ + ㄴ becomes the single block 한.
How many syllables can Hangul make?
Modern Hangul can form 19 initials × 21 vowels × 28 finals (including none) = 11,172 possible syllables. In practice far fewer are commonly used, so once you know the combination rules you can read most of them.
Where does the vowel go inside a block?
The vowel's shape decides its position. Vertical vowels like ㅏ, ㅓ, ㅣ sit to the right of the initial consonant; horizontal vowels like ㅗ, ㅜ, ㅡ sit below it. Knowing this one rule lets you predict the shape of any block.