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Convert hiragana to katakana, katakana to hiragana, or swap both at once. Half-width katakana such as ｶﾞ is supported, and kanji, letters and emoji stay untouched. Nothing is uploaded.
Character counts (input)
Hiragana and katakana both ways
Every kana from ぁ to ゖ is mapped to its katakana twin and back, including ゔ/ヴ, ゕゖ/ヵヶ and the iteration marks ゝゞ/ヽヾ.
Half-width katakana
Read half-width kana such as ｶﾞ ﾊﾟ ｳﾞ and widen them, or write the result in half-width katakana for legacy systems.
Swap and count
Swap the script of every kana in one pass and see how many hiragana, katakana, kanji and other characters your text contains.
>> technical info
How the Conversion Works:
Hiragana (U+3041 to U+3096) and katakana (U+30A1 to U+30F6) sit exactly 0x60 apart in Unicode, so each kana is converted by adding or subtracting that offset. The same rule covers ゔ/ヴ, ゕゖ/ヵヶ and ゝゞ/ヽヾ. The long vowel mark ー and the middle dot ・ belong to both scripts and are kept. Half-width katakana store the voiced mark as a separate character, so ｶﾞ is first combined into ガ.
Example:
ひらがな → ヒラガナ カタカナ → かたかな ｶﾞｷﾞｸﾞ → がぎぐ
Why Use This Tool:
- >Normalize Japanese text for forms, databases and search
- >Prepare furigana and kana readings
- >Convert legacy half-width kana from old systems
- >Private: nothing leaves your browser
>> frequently asked questions
Q: What is the difference between hiragana and katakana?
A: Both are Japanese syllabaries with the same sounds. Hiragana is used for native words and grammar, katakana mainly for foreign words, names and emphasis.
Q: Can it handle half-width katakana like ｶﾞ?
A: Yes. Enable the half-width option and sequences such as ｶﾞ, ﾊﾟ and ｳﾞ are combined into ガ, パ and ヴ before conversion. You can also output half-width katakana.
Q: What happens to kanji, Latin letters and emoji?
A: They are left exactly as they are. Only kana are converted.
Q: What happens to ー, ・ and ヷ ヺ?
A: The long vowel mark ー and the middle dot ・ stay as they are. ヷヸヹヺ have no hiragana equivalent and are also left unchanged.
Q: Is my text sent to a server?
A: No. The conversion runs in your browser and your text never leaves your device.