Background: Hard mineral and salt deposits that develop inside the kidneys are called kidney stones, or renal calculi. When they pass through the urinary tract, they may cause severe pain and discomfort and vary in size and substance. The present study was conducted to assess renal stones using Ultrasonography. Materials & Methods: 60 cases with renal stones of both genders were selected. Using a Toshiba machine with a transmit frequency of 2.5 to 6.0 MHz, everybody underwent color doppler USG. Urinary stones were evaluated for size, posterior acoustic shadowing, and echo contrast between the stone and surrounding tissue in order to assess their grayscale US appearance. Only the US grayscale was used to establish the size of the stone. Results: Out of 36 patients, 36 were males and 24 were females. In 34 cases, the size of renal stones was <4 mm and in 36 cases, it was >4 mm. Echo findings found to be marked in 20, slight in 29 and indistinct in 11 cases. The difference was non- significant (P> 0.05). Conclusion: Echo results were found to be marked, slight and indistinct. With little loss of specificity, the color doppler enhances renal and ureteral stone detection, diagnostic confidence, and overall accuracy.