Prostate volume (ellipsoid)
Prostate volume by the prolate-ellipsoid formula: AP x TR x CC x 0.52 (cc); above ~30 cc is the conventional enlarged (BPH) range.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Anteroposterior diameter
- 4 cm
- Transverse diameter
- 5 cm
- Craniocaudal diameter
- 4 cm
Result: Prostate volume 41.6 cc (AP x TR x CC x 0.52): above ~30 cc, the conventional enlarged (BPH) range.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Reading
- above ~30 cc is the conventional enlarged (BPH) range; the volume is the denominator for PSA density.
What you enter
- Anteroposterior diameter
- Transverse diameter
- Craniocaudal diameter
How this is calculated
- Formula
- volume = anteroposterior x transverse x craniocaudal x 0.52, dimensions in cm, volume in cc (= mL); 0.52 is pi/6 rounded.
Terris MK, Stamey TA. Determination of prostate volume by transrectal ultrasound. J Urol. 1991;145(5):984-987. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.