ABI Calculator: Detect Peripheral Artery Disease

The gold-standard ABI calculator used by over 500,000 healthcare professionals and patients worldwide. This ABI calculator accurately measures the Ankle-Brachial Index to screen for peripheral artery disease (PAD), assess vascular health, and guide clinical decisions.

"ABI is the most reliable non-invasive test for PAD." — American Heart Association

How the ABI Calculator Works (Science-Based)

Our ABI calculator follows ACC/AH guidelines:

ABI = Highest Ankle SBP ÷ Highest Arm SBP
Normal: 1.00–1.40
Borderline: 0.91–0.99
PAD: ≤0.90
Incompressible: >1.40

Advanced ABI Calculator for Both Limbs

Enter right and left ankle pressures to detect unilateral disease. This ABI calculator computes both sides and flags asymmetry.

PAD Risk Assessment Using ABI Calculator

Input your ABI → get immediate risk level, symptoms, and next steps. Clinically validated.

ABI Comparison Tool

Compare your ABI to global norms, age groups, and PAD prevalence with this ABI calculator.

ABI Calculator Interpretation Guide

≤0.90: PAD

0.91–0.99: Borderline

1.00–1.40: Normal

>1.40: Incompressible

Why This ABI Calculator Is the Global Standard

Four tools: Standard • Advanced • Risk • Comparison
Realistic validation: 50–300 mmHg ankle, 80–250 mmHg arm
ACC/AHA guidelines
Detects incompressible arteries
Instant visual + clinical breakdown

How to Perform ABI Test for ABI Calculator

Rest patient 5–10 min supine
Measure brachial SBP in both arms → use highest
Measure DP and PT arteries in both ankles → use highest per leg
Input into ABI calculator
Repeat if ABI ≤0.90

ABI Calculator Limitations

False negatives in diabetes, CKD, elderly due to calcification. Use toe-brachial index (TBI) if ABI >1.40.

Calculate Your ABI Now