Icubic meter (cbm) yiyunithi yomlinganiselo womthamo osetyenziswa ngabathumeli ukumisela iintlawulo zobunzima. Iyonke i-cbm (kwiimitha) ingabalwa ngokuphinda-phinda ubude (L), ububanzi (W), kunye nobude (H) bepasela. Kumthwalo oqulethe izinto ezinobungakanani obahlukeneyo, phinda ubalo lobungakanani obunye kwaye ugqibezele iziphumo. Ngokubanzi, kukho iintlobo ezintathu eziphambili zefomula ye-cbm kwiindidi ezintathu ezahlukeneyo zeepasile:
cbm ifomula yeepasile eziqhelekileyo = L x W x H
cbm ifomula yeepasile ezingaqhelekanga = Eyona inde L x inde kakhulu W x Ende kakhulu H
Ifomula ye-cbm yeepasile zecylindrical = π x r² xh
