The International Prostate Symptom Score (IPSS) is a broadly used questionnaire designed to assess the severity of lower urinary tract symptoms (LUTS) in men, particularly those related to harmless prostatic hyperplasia (BPH). Objectives: The primary aim of this study is to find the International Prostate Symptom Score (IPSS) and its correlation with sonography and prostate size. Methods: This cross-sectional study was conducted at CMH Lahore February 17, 2024, to May 16, 2024. Data were collected from 250 patients. Male patients aged>40 years who presented with LUTS were included in the study. Patients with a history of prostate cancer, bladder dysfunction and prostate surgery were excluded from the study. Data were collected through a systematically designed questionnaire. All the study participants completed the IPSS questionnaire to find the severity and urinary symptoms. Results: Data were collected from 250 patients according to the study's inclusion criteria. The mean age of the patients was 62.4 ± 8.6 years, and the mean BMI was 27.1 ± 3.2 kg/m2. The mean PSA was 6.8 ± 2.5 ng/mL, and the mean IPSS score was 19.5 ± 6.8. there, 140 (56%) patients were smokers, and 125 (50%) also suffering from hypertension. Patients with IPSS scores ranging from 0-7 exhibited a mean PV of 32.5 ± 5.6 mL, with a Pearson correlation coefficient (r) of 0.25 (p = 0.038). As IPSS scores increased to the 22-35 range, the mean PV rose to 54.3 ± 9.2 mL, with a more robust correlation coefficient of 0.75 (p < 0.001). Conclusion: It is concluded that there is a significant positive correlation between the International Prostate Symptom Score (IPSS) and prostate volume (PV) in patients with benign prostatic hyperplasia (BPH).