Bip39 to private key https://www.empowher.com/user/4550298 Even though it uses BIP32 system it is possible to nevertheless import BIP39 seeds into Electrum wallet. Also other than BIp32 there is BIP44 Model which some wallet use to the era of seeds. bip39-phrase.com is really an informational website committed to technologies and tools https://zenwriting.net/keenanctdp/how-to-create-a-bip39-seed-a-step-by-step-guide