Actual Size Small Kidney Stones In Urine. Kidney stones vary in size. Small kidney stones are defined as being less than 5mm in size.
Tiny stones are less likely to become stuck in the kidneys or other parts of the urinary tract. However the deposits can be much larger the size of a pea a marble or even larger. Mild to moderate symptoms may occur during the passage of a small stone.
Some of these larger stones are too big to be flushed from the kidney.
Kidney stones are often as small as grains of sand. However the deposits can be much larger the size of a pea a marble or even larger. Stones that are 4 6 millimeters mm in size require treatment but most of them also pass naturally in around 45 days. Depending on the circumstances it is generally safe to wait as long as four to six weeks for a small kidney stone to pass out of the body.