About ABICalculator.info

Free, evidence-based vascular health education for patients in the USA and Canada.

Our Mission

ABICalculator.info was built with one clear purpose: to make credible, actionable information about Peripheral Artery Disease and the Ankle-Brachial Index freely accessible to every patient in the United States and Canada.

Vascular medicine experts and clinical board professionals ensuring medical accuracy
Vascular medicine experts and clinical board professionals ensuring medical accuracy.

PAD affects an estimated 10–12 million Americans and nearly 1 million Canadians. Most of them don't know they have it. And those who do get a diagnosis often leave their doctor's office with more questions than answers — questions like "What does my ABI score mean?", "Is this going to get worse?", "What can I actually do about this?"

This site was created to answer those questions. Clearly. Without unnecessary medical jargon. Without trying to sell anything.

What You'll Find Here

  • A free ABI calculator — enter your blood pressure readings and get an instant, interpreted result with reference ranges and plain-language explanation
  • Evidence-based patient guides — on every aspect of PAD and ABI testing, written to be readable by people who aren't doctors but who want real, accurate information
  • Current information — our medical content is reviewed against the most recent ACC/AHA guidelines (2024), Canadian Cardiovascular Society publications, and ADA Standards of Medical Care in Diabetes (2026)
  • Canada-specific content — dedicated resources on provincial health coverage, CCS guidelines, and Canadian vascular care access (not just a US-centric perspective)

Our Medical Review Policy

All clinical content on ABICalculator.info is reviewed by licensed medical professionals before publication and is updated whenever major clinical guidelines change. Our medical content is reviewed by our medical advisory team against the following primary sources:

Each article includes the name of the reviewing clinician, their credentials, and the date of last review. When new guidelines are published or significant new research emerges, articles are updated accordingly.

Medical Advisory Team

SM
Dr. Sarah Mitchell, MD — Medical Director

Board-Certified Vascular Medicine Specialist | Fellow, American College of Cardiology (FACC) | Fellow, American Heart Association (FAHA)

Dr. Mitchell completed her residency in Internal Medicine at Johns Hopkins and fellowship training in Vascular Medicine at Cleveland Clinic. She has over 15 years of clinical experience treating PAD patients and has published research on exercise therapy outcomes in peripheral vascular disease. She reviews all clinical content for accuracy and alignment with current ACC/AHA and CCS guidelines.

JL
Dr. James Liu, DPM — Podiatric Surgery Consultant

Board-Certified Podiatric Surgeon | Diabetic Foot Wound Specialist | University of Toronto, Faculty of Medicine

Dr. Liu provides specialist review for content relating to diabetic foot health, toe-brachial index testing, wound care, and lower limb complications of PAD. He practices at a major academic medical center in Toronto, Canada.

What This Site Is Not

Important

ABICalculator.info is an educational resource, not a medical practice. The content on this site — including the ABI calculator — does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional for interpretation of your specific test results and for medical decisions.

Medical Disclaimer

The information provided on ABICalculator.info is intended for general informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment from a qualified healthcare provider who knows your individual medical history.

The ABI calculator on this site performs a mathematical calculation based on values you enter. It does not account for individual variations, measurement technique, medical history, or clinical context that a trained vascular technologist considers during an actual clinical ABI test. The calculator result should not be used to make healthcare decisions without consulting a physician.

If you believe you have a medical emergency, call 911 (USA) or your local emergency services immediately.

Any links to external websites are provided for informational purposes only. ABICalculator.info does not endorse, and is not responsible for, the content of external sites.

Advertising and Commercial Relationships

ABICalculator.info does not accept pharmaceutical, medical device, or supplement company advertising. We do not accept sponsored content or paid article placements. We have no commercial relationships with vascular labs, medical facilities, or healthcare providers. Our editorial decisions are made entirely on the basis of educational value and clinical accuracy.

The site may display contextually relevant Google Ads as a way to support ongoing site maintenance and content development. These ads do not influence our editorial content.

Contact Us

For medical content corrections, broken links, or questions about editorial policy, please contact our team at: editorial@abicalculator.info

We do not respond to individual medical questions or requests for medical advice. For medical concerns, please consult a qualified healthcare professional.