The sound-values of the letters are in some cases identical with French and/or English usage; e.g. [z] has the same sound as in English ZINC or French ZRO. [j], on the other hand, has the sound value of English Y in YOKE; whereas [y] has its Scandinavian and Old English value.
Vowels in general tend to be close to Latin and Italian, [e] is closer than English /e/ in MET, /i/ is the vowel sound found in English MEET; and so on.
The [official homepage of the International Phonetic Association] shows all the letters.