Going from Finnish to Northern Sami (Davvisรกmegiella) has a composite linguistic distance of 55% (curated lexical data). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Latin โ Latin
Uralic โ Uralic
The 5 languages with the lowest linguistic distance from Finnish:
A quick 3-question check between Finnish and Northern Sami. No signup.