Maybe indirectly it's possible to convert seed using some fork of Mnemonic Code Converter from iancoleman, but I didn't try doing this myself.
It won't
Although Electrum Seed system uses the same wordlist as BIP39, it is not the same system.
If you generated the seed using Electrum and you put that seed into iancoleman software, the private keys won't match, AFAIK.
Security implications
Electrum currently use the same wordlist as BIP39 (2048 words). A typical seed has 12 words, which results in 132 bits of entropy in the choice of the seed.
https://electrum.readthedocs.io/en/latest/seedphrase.htmlHowever, you can open BIP39 seeds into electrum wallet if you check BIP39 checkbox.