Home » FAQs » What are the normal size of kidney stones in mm ?What are the normal size of kidney stones in mm ?by Nikhil KumarNovember 12, 2025November 12, 2025The normal size of kidney stones is about 1 mm to 4 mm; anything larger than 4 mm needs medical treatment. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment. The reCAPTCHA verification period has expired. Please reload the page.