Going from Kyrgyz to Uzbek (O'zbek) has a composite linguistic distance of 51% (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.
Cyrillic β Latin/Cyrillic
Turkic β Turkic
The 5 languages with the lowest linguistic distance from Kyrgyz:
A quick 3-question check between Kyrgyz and Uzbek. No signup.