What Is the Normal Prostate Volume in cc?

Prostate volume in adult men is normally about 20 to 30 cc. This is the average normal prostate size in middle-aged men, and most ultrasound reports are interpreted against this range. Prostate size usually increases slightly with age.

The prostate is a small gland located just below the bladder, and the urethra passes through its center. Its size is usually measured by transrectal ultrasound or, in some cases, MRI.

In younger men under 40, prostate volume is usually 15 to 25 cc; in later decades of life it may reach 30 cc or more. Therefore, a 35 cc prostate in a 65-year-old man is not necessarily a sign of disease. At older ages, the prostate gland may grow up to 40 cc even without an associated disease.

If your ultrasound report mentions a number above the normal range, there is no need for immediate alarm. What matters is whether symptoms are present, such as frequent urination, a weak urine stream, a feeling that the bladder does not empty completely, or waking repeatedly at night to urinate.

If you notice these signs, it is better to see a urologist so they can perform additional evaluations such as a PSA test or a digital rectal prostate exam. Remember that prostate volume alone does not determine whether the prostate is healthy or diseased, and a definitive diagnosis should be made only by a specialist physician.