| Name | LATIN SMALL LETTER I WITH DIAERESIS LATIN SMALL LETTER I DIAERESIS |
| Unicode Version | 1.1 |
| Block（ブロック） | Latin-1 Supplement（ラテン1補助） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | ï ï |
| UTF-8 Encoding | ï c3af |
| UTF-16 Encoding | ï 00ef |
| UTF-32 Encoding | ï 000000ef |