Küzmics was born in Dolnji Slaveči and died in Kančevci. His parents was János Küsmics (sic!) and Erzsébet. He was trained as a school supervisor for the SloveneCatholic schools in Prekmurje. Miklós Küzmics wrote the first bilingual textbook for the Hungarian Slovenes, entitled ABC knizsica narodni soul haszek ("The Alphabet Booklet in Favor of the Nationality Schools"), which he translated from German into Hungarian and Slovene. This booklet, which contained the first Slovene-Hungarian dictionary, appeared in Buda in 1790.
He also translated the four Gospels into local dialect of Prekmurian language. The book was printed in 1804 in Szombathely with the title Szvéti Evangyeliomi.