Bip39 Mnemonic Code Converter Tool. Though there are BIP39 wordlists in languages besides English, it is actually strongly not encouraged to work with non-English words for wallet backups. It'd make restoring the wallet hard or extremely hard. No, there is not any technical limit on the duration of your passphrase. https://thesocialroi.com/story8692427/bip39-words-https-linktr-ee-bip39-about-ian-coleman-bip39