Prostate Volume Calculator

Prostate Volume Calculator

Enter your weight and height, and the calculator will estimate the prostate volume based on provided measurements.

Length:

cm ▾

Width:

cm ▾

Height:

cm ▾

PSA (Optional):

ng/ml

The free online Prostate Volume Calculator helps evaluate a man’s prostate size and the prostate-specific antigen (PSA) in the blood. The prostate is a small gland located below the bladder in males.

PSA is a protein produced by both cancerous and non-cancerous cells in the prostate. Using this calculator, you can determine the size of your prostate for health monitoring purposes.

What is Prostate Volume?

Prostate volume is an important indicator for identifying conditions such as prostatitis. The prostate gland produces prostatic fluid, which helps keep semen viable in the acidic environment of the vagina. Prostatic fluid is slightly alkaline and appears milky or white.

Men with prostatitis may experience:

Irritation or pain during urination
Reduced vitality due to insufficient alkaline fluid

Prostate

How to Measure Prostate Size?

There are three major approaches to measure prostate volume:

Transrectal ultrasonography (TRUS)
Prostate ellipse volume calculation
Ellipsoid volume measurement technique

The prolate ellipse volume calculation is the most practical and precise for clinical applications. This method provides accurate prostate size measurement when the length, width, and height of the prostate are known.

Formulas:

Ellipse Volume:
Prostate Volume = Height (cm) × Length (cm) × Width (cm) × π / 6

Bullet-shaped Prostate Volume:
Bullet Volume = Height (cm) × Length (cm) × Width (cm) × 5π / 24

The calculator can quickly determine prostate size using either the ellipse or bullet-shaped formula.

Prostate-Specific Antigen (PSA)

PSA is an enzyme produced by the prostate gland. Its concentration in the blood usually increases in cases of prostate cancer. Measuring PSA, along with prostate volume, helps in detecting potential prostate issues such as prostatitis or BPH (Benign Prostatic Hyperplasia). The highest normal PSA value is 4 ng/mL (nanograms per milliliter).

Why Measure PSA?

PSA density is a key parameter used to assess the risk of prostate cancer or BPH. Elevated PSA levels indicate the need for further medical evaluation by a doctor.

How the Prostate Volume Calculator Works

The prostate volume calculator provides important information about prostate size and PSA density, helping to detect potential prostate conditions.

Input:

Enter the length, width, and height of the prostate gland
Optionally enter the PSA level
Click the calculate button

Output:

Prostate volume using ellipsoid and bullet-shaped formulas
PSA density in the blood

FAQs

What is considered a normal prostate volume?

The normal prostate size is approximately 3 × 3 × 5 cm or around 25 mL. The prostate volume calculator helps find an accurate measurement.

Does prostate size change with age?

Yes. Prostate size tends to increase with age. For example, at age 40–49, the prostate volume averages around 5.5 mL, and by age 70–80, it may reach 11.1 mL.

What prostate size is considered enlarged?

A prostate volume of 80 mL or 80 cm³ is generally considered enlarged. The prostate volume calculator can help identify this.

How do urologists measure prostate size accurately?

Urologists use methods such as rectal examination, TRUS (transrectal ultrasonography), and CT scans. The prostate volume calculator provides a simpler, non-invasive estimation.

What causes prostate enlargement?

While the exact cause is unknown, age-related hormonal changes are believed to contribute to an enlarged prostate. Using the prostate volume calculator can help monitor prostate size over time.

Conclusion

The prostate gland plays a vital role in producing alkaline fluid that maintains sperm viability in the acidic vaginal environment. If prostate function is impaired, men may experience reduced vitality and urinary difficulties. The prostate volume calculator allows you to measure prostate size and PSA levels, aiding in early detection of potential issues.

References:

Wikipedia: Prostate Structure
NCBI: Giant Prostatic Hyperplasia – Case Report