>>2600349This site will convert between hiragana and katakana :
https://en.calc-site.com/letters/convert_kanaThis site will convert kanji to kana:
https://j-talk.com/convert/I use these along with the imtranslate addon for your browser to decipher passwords. They're not 100%, but they're damn-near close enough that I've had no trouble cracking passwords with them.