You can’t convert an Electrum seed phrase to a BIP39 seed phrase, as a result of within the technique of deriving the grasp personal keys, each algorithms use a unique salt. This implies, you can’t use Electrum seed phrases to generate BIP39-phrase addresses.
Nevertheless, it is potential to derive Electrum addresses from Electrum seed phrases even exterior Electrum. There’s a brief information right here though it’s for testnet, it additionally works for mainnet simply by switching the coin kind.
To cite it:
Obtain bip39-standalone.html.
Go to line 28611 and exchange “return h == nh;” with “return true;”.
Go to line 28639 and exchange “mnemonic” with “electrum”.
Open bip39-standalone.html in your browser and paste your seed phrase.
Choose “Bitcoin – Testnet” from “Coin”.
In “Derivation Path”, choose BIP141, P2WPKH and use: m/0’/0
Be aware: To get P2PKH deal with use the m/0 path, m/0’/0 is just for Electrum’s segwit P2WPKH.