Katakana Letter O Letter
オ (Katakana Letter O, U+30AA) is a Japanese katakana character used to write the “o” sound.
U+30AA
オ is the katakana letter representing the “o” sound in Japanese. It’s commonly used in loanwords and names, especially when written in katakana. This page helps you copy the character and use the correct Unicode values.
Katakana Letter O Letter Meaning
オ (KATAKANA LETTER O) is a katakana character used to represent the vowel sound “o” in Japanese. It appears in many loanwords, personal and place names written in katakana, and in various settings where katakana is preferred for emphasis or phonetic rendering. In everyday text, オ is typically read as “o” (for example, in combinations like “オレンジ” or “コンピューター”). As a single character, it functions as part of syllable sequences that build larger words. For developers and designers, it’s important to use the correct code point U+30AA to ensure consistent rendering across fonts and systems.
Common uses
- •Writing Japanese loanwords that use an “o” sound (katakana spelling).
- •Rendering names of people or brands in katakana (e.g., in signage and profiles).
- •Labeling or phonetic guides where “o” needs to be shown in katakana.
- •UI text and typography tests to confirm font support for katakana characters.
- •Generating or editing Japanese content where single-character accuracy matters.
Examples
オ (Katakana Letter O) — Unicode & Copy Info
- オオレンジ
- オコーヒー
- オオフィス
- オトラベル・オ
- オメニュー：オ
Variations
Technical codes
| Unicode | U+30AA | |
| HTML Entity | オ | |
| HTML Code | オ | |
| CSS | \30AA | |
| Alt Code | Alt + 12458 | |
| Decimal | 12458 |
How to type Katakana Letter O Letter (オ)
On Windows
Hold Alt and type 12458 on the numeric keypad. In Word, type 30AA then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 30AA. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 30aa, then press Enter or Space.
Anywhere
Copy オ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Katakana Letter O letter mean?
オ (KATAKANA LETTER O) is a katakana character used to represent the vowel sound “o” in Japanese. It appears in many loanwords, personal and place names written in katakana, and in various settings where katakana is preferred for emphasis or phonetic rendering. In everyday text, オ is typically read as “o” (for example, in combinations like “オレンジ” or “コンピューター”). As a single character, it functions as part of syllable sequences that build larger words. For developers and designers, it’s important to use the correct code point U+30AA to ensure consistent rendering across fonts and systems.
What Unicode character is オ?
オ is KATAKANA LETTER O with the Unicode code point U+30AA.
How can I paste オ into HTML safely?
You can paste the character directly, or use the provided numeric HTML entity: オ.
What should I use for CSS or JavaScript to display オ?
Use the provided escapes: CSS escape \\30AA, or JavaScript escape \\u{30AA}.
Is オ the same as the hiragana お?
No. オ is katakana (U+30AA). The hiragana お is a different character with a different Unicode code point.