ED Severity Calculator

Answer questions to calculate the severity of your International Index of Erectile Function. Answer for the past four weeks. The calculator scores the erectile function domain and the four other IIEF domains, then places the result in the standard severity bands.

IIEF Erectile Dysfunction Severity Calculator

International Index of Erectile Function

ED severity calculator

Answer for the past four weeks. The calculator scores the erectile function domain and the four other IIEF domains, then places the result in the standard severity bands.

All 15 questions. Scores all five domains.

—out of 30

Domain scores
Domain	Questions	Score	Range	Unaffected	Status

Reading the result. The erectile function domain is the endpoint clinical trials report and the one worth tracking over time. A change of about 4 points on that domain is generally considered clinically meaningful.

Zero-scored answers ("no sexual activity", "did not attempt intercourse") lower a domain without indicating erectile dysfunction. If several answers were zero, the score reflects low activity as much as function.

This is a screening questionnaire, not a diagnosis. Discuss the result with a clinician, who can check testosterone, cardiovascular risk, medications, and other causes.

Free download • Edition 2026

A Practical Guide to Erectile Dysfunction Treatment

Your score tells you where you stand. This 11-page guide covers what to do about it: the full treatment ladder from workup and lifestyle through pills, injections, devices, and implants, with clinician notes on dosing and decision points.