| Vowels | ||||||||
| 10 Basic vowels | Short | Hangul | ㅏ | ㅓ | ㅗ | ㅜ | ㅡ | ㅣ |
| Romanized | a | eo | o | u | eu | i | ||
| Long (y + short) | Hangul | ㅑ | ㅕ | ㅛ | ㅠ | |||
| Romanized | ya | yeo | yo | yu | ||||
| 11 Diphthongs | Short + ㅣ | Hangul | ㅐ | ㅔ | ㅚ | ㅟ | ㅢ | |
| Romanisd | ae | e | oe | wi | ui | |||
| Long + ㅣ | Hangul | ㅒ | ㅖ | ? | ? | |||
| Romanisd | yae | ye | ||||||
| w + short + short | Hangul | ㅘ | ㅝ | ㅘ | ㅝ | |||
| Romanized | wa | wo | ||||||
| w + short + short + ㅣ | Hangul | ㅙ | ㅞ | ㅙ | ㅞ | |||
| Romanized | wae | we | ||||||