A prostate volume calculator determines prostate size. Doctors use prostate volume measurements. These measurements help diagnose conditions. Benign prostatic hyperplasia (BPH) is one condition. Prostate cancer screening also uses volume data. Volume affects PSA levels. Higher volumes often mean higher PSA. Calculating volume helps interpret PSA tests. Ultrasound or MRI provides measurement data. The calculator uses length, width, and height. These three dimensions create volume. Accurate volume assessment guides treatment decisions. Medication or surgery options depend on size. Regular monitoring tracks changes over time.
The prostate volume calculator processes three inputs. Length, width, and height dimensions are required. The calculator multiplies these three values. Then it multiplies by the ellipsoid constant. The result is prostate volume in cubic centimeters. PSA density calculation requires PSA value. PSA density equals PSA divided by volume. This metric helps cancer risk assessment. Higher density indicates greater cancer risk. Results display immediately after calculation. Clear button resets all fields.
Enter measurements in centimeters (cm)
Volume: 0 cm³
PSA Density: 0 ng/mL/cm³
Normal prostate volume
The prostate volume calculator uses the ellipsoid formula:
Volume = 0.52 × Length × Width × Height
This formula approximates prostate volume. The constant 0.52 is derived from π/6. This adjustment accounts for the ellipsoid shape. Measurements come from transrectal ultrasound (TRUS). MRI provides alternative measurements. Accuracy depends on precise dimension input.
The prostate volume calculator processes three inputs. Length, width, and height dimensions are required. The calculator multiplies these three values. Then it multiplies by the ellipsoid constant. The result is prostate volume in cubic centimeters. PSA density calculation requires PSA value. PSA density equals PSA divided by volume. This metric helps cancer risk assessment. Higher density indicates greater cancer risk. Results display immediately after calculation. Clear button resets all fields.
| Prostate Volume (cm³) | Classification | Clinical Significance |
|---|---|---|
| Below 20 | Small | Typically normal for younger men |
| 20 - 30 | Normal | Average size for men over 50 |
| 30 - 40 | Enlarged | Mild BPH possible |
| 40 - 60 | Moderately Enlarged | BPH likely, may cause symptoms |
| Above 60 | Severely Enlarged | Significant BPH, often requires treatment |
Prostate volume indicates gland health. Enlargement suggests BPH. Volume affects PSA levels. Doctors assess cancer risk through volume. Treatment decisions rely on size data. Surgical planning requires accurate measurements. Monitoring changes tracks disease progression.
Transrectal ultrasound (TRUS) measures prostate dimensions. MRI provides more detailed imaging. Doctors measure length, width, and height. The ellipsoid formula calculates volume. Some urologists use planimetry methods. Volume estimation guides treatment approaches.
PSA density is PSA divided by volume. This metric adjusts PSA for prostate size. Higher density suggests cancer possibility. Lower density indicates BPH likelihood. Values above 0.15 ng/mL/cm³ raise concern. Doctors use this in cancer screening.
Smaller prostates have higher cancer density. Larger glands often have BPH. PSA density improves cancer detection. Volume alone doesn't diagnose cancer. Combined with PSA and exam, it aids assessment. Biopsy decisions incorporate volume data.
Prostates over 30 cm³ are enlarged. Average volume is 20-25 cm³ for older men. Volumes above 40 cm³ often cause symptoms. Size above 60 cm³ is significantly enlarged. Symptoms matter more than absolute size. Flow rate tests confirm obstruction severity.