What Is a PSA Calculator?

A PSA calculator is an online tool that allows you to input your Prostate-Specific Antigen (PSA) levels to obtain immediate results. PSA is a protein produced by the prostate, and its measurement is commonly used to assess prostate health, screen for prostate cancer, and track disease progression over time. This calculator simplifies the process, providing quick insights based on your PSA values.

If you’re looking for a quick and easy way to understand your PSA value, this calculator gives you a starting point—especially if you’re tracking changes over time.

How Is PSA Calculated?

The PSA level is determined through a straightforward blood test, typically reported in nanograms per milliliter (ng/mL). The total PSA includes both:

• Free PSA (unbound form)
• Complexed PSA (bound to other proteins)

Most labs report total PSA, but the free PSA percentage can give more detail about prostate cancer risk.

• PSA = Free PSA + Complexed PSA
• PSA levels above 4.0 ng/mL may require further investigation

How Is Free PSA Calculated?

Free PSA is commonly expressed as a percentage of the total PSA, calculated using the formula:

Free PSA % = (Free PSA / Total PSA) × 100

A lower free PSA percentage (e.g., under 10%) may indicate a higher risk of prostate cancer, while a higher percentage suggests a benign condition like BPH (Benign Prostatic Hyperplasia).

PSA Method Calculator: Why It Matters

A PSA method calculator refers to how different calculators or lab tests approach the measurement and interpretation of PSA levels. Some tools also include:

• PSA Velocity is the rate at which PSA levels change over time.
• PSA Doubling Time: How quickly PSA levels double
• PSA Density is the PSA level divided by prostate volume, helping to adjust for prostate size and improve test accuracy.

However, our basic PSA calculator focuses on the raw value only—ideal for patients and professionals who need a quick reference.