Can you tell me how long it should take a kidney stone to pass?

? Size & location: Small stones pass quicker than large ones. Stones greater than 5 - 6 mm in diameter may never pass. Stones with spikes, even if small, may remain stuck indefinitely. Stones in lower ureter more likely to pass & pass quicker than stones in upper ureter. Good hydration & taking tamsulosin speeds up passage. Can not give you absolute or likely time span without details. Good luck.