Prostate Volume Calculator

Calculate volume and PSA density reference values

Prostate Dimensions (mm)

mm

Please enter a valid value

mm

Please enter a valid value

mm

Please enter a valid value

Calculation Results

0 cm³

Volume = (π/6) × Width × Height × Length

Input Dimensions:
Length: 0 cm, Width: 0 cm, Height: 0 cm
Normal PSA Density Range (up to):
0.00 ng/mL
Suspicious PSA Density Threshold:
0.00 ng/mL
Estimated Weight:
0 grams


Prostate Volume Calculator – Calculate Your Prostate Volume

Easily estimate prostate gland volume using this clinically informed calculator. Just input the length, width, and height of the prostate to get precise volume measurements using ellipsoid and bullet volume models. You can also calculate PSA density when PSA levels are known.

What Is the Prostate Volume Calculator?

The Prostate Volume Calculator is a medical tool used to estimate the volume of the prostate gland. By entering the prostate’s three dimensions—length, width, and height (in cm)—you can quickly determine its size. The tool uses geometric volume formulas specific to ellipsoid and bullet shapes, which are most representative of prostate anatomy.

How It Works

Required Inputs

  • Length (L): Measured from the bladder base to the external sphincter (longitudinal view).
  • Width (W): The maximum width measured at the prostate’s mid-gland in the axial plane.
  • Height (H): The anteroposterior dimension, available in sagittal or axial imaging.
  • PSA Level (optional): If you know the PSA value in ng/mL, you can also calculate PSA density.

Volume Formulas Used

  • Ellipsoid Volume:
     V = L × W × H × π/6
  • Bullet Volume:
     V = L × W × H × 5π/24
    (Bullet volume may be more accurate if the prostate is smaller than 55 mL)

PSA Density Formulas

  • Ellipsoid PSA Density:
     PSA ÷ Ellipsoid Volume
  • Bullet PSA Density:
     PSA ÷ Bullet Volume

Why Measure Prostate Volume?

Prostate volume measurements play a crucial role in:

  • Assessing benign prostatic hyperplasia (BPH)
  • Evaluating the need for a biopsy
  • Differentiating between BPH and prostate cancer using PSA density
  • Predicting prostate cancer prognosis when used alongside the Gleason score

Clinical Applications

  • Helps determine treatment strategies for BPH.
  • Assists in evaluating prostate cancer progression and recurrence risk.
  • Enhances diagnostic accuracy during ultrasound or MRI interpretation.
  • Supports decision-making in prostate artery embolization procedures.

PSA Density and Prostate Cancer

PSA density—PSA level divided by prostate volume—offers a better cancer risk indicator than PSA alone. A higher PSA density may suggest the need for a biopsy or further imaging, especially in patients with borderline PSA levels.

Read more guideline here:

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