pɹɪsˈaɪs kˌælkjʊlˈeɪʃənz ɹᵻkwˈaɪɚ vˈɛɹi diːtˈeɪld nˈɑːlɪdʒ ʌvðə njuːtɹˈɪʃənəl kəmpˈoʊnənts ʌv ˈɛvɹi mˈiːl æz wˈɛl æz ðə ɹˈeɪt ʌv ɐbsˈoːɹpʃən ʌv njˈuːtɹiənts, wˌɪtʃ kæn vˈɛɹi səbstˈænʃəli fɹʌm ˌɪndᵻvˈɪdʒuːəl tʊ ˌɪndᵻvˈɪdʒuːəl, mˌeɪkɪŋ ɪfˈɛktɪv ˌɛstᵻmˈeɪʃən ʌv jˈʊɹɹɪn pˈiː ˈeɪtʃ nˌɑːt kˈɜːɹəntli fˈiːzᵻbəl.
Precise calculations require very detailed knowledge of the nutritional components of every meal as well as the rate of absorption of nutrients, which can vary substantially from individual to individual, making effective estimation of urine pH not currently feasible.