The convertible mark (Serbo-Croatian: konvertibilna marka, Cyrillic: конвертибилна марка; sign: KM; code: BAM) is the currency of Bosnia and Herzegovina.

The three official languages of Bosnia and Herzegovina, Bosnian, Serbian and Croatian, have adopted the German nouns Mark and Pfennig as loanwords marka and pfenig.

The Official Gazette of BiH (Bosnian: Službeni glasnik BiH), Official newspaper of FBiH (Bosnian: Službene novine FBiH) and other official documents recognised pfenig or пфениг[2] (depending on the script; Serbian uses both Latin and Cyrillic equally, while Bosnian and Croatian uses only Latin) as the name of the subdivision.

Most, however, consider the "pf" cluster in "pfenig" to be nigh unpronounceable, so the pronunciation was practically immediately reduced to "fenig", which eventually gave rise to the "fening" misspelling.

The Central Bank of Bosnia and Herzegovina (CBBH) uses "fenings" as the English plural.

[1] On the notes for the Republika Srpska, inscriptions are printed first in Cyrillic and then Latin script, and vice versa.

Banknotes, with the exception of the KM 200 note, are printed by the French company Oberthur.

[1] On 15 May 2002, a KM 200 banknote, designed by Robert Kalina, was introduced during a promotion that was held in the Central Bank of BH.

After an international tender, the Austrian company Oesterreichische Banknoten und Sicherheitsdruck GmbH (OeBS) in Vienna was chosen to print the notes.