BMI Calculator for Weight Loss Surgery Patients
Calculate your Body Mass Index and understand how it relates to weight loss surgery eligibility and goals.
How to Use This Calculator
- Enter your height in inches (e.g., 70 for 5'10")
- Enter your current weight in pounds
- Provide your age and gender for more personalized information
- Click Calculate to see your BMI and how it relates to weight loss surgery
Formula Used
BMI = (Weight in pounds / (Height in inches × Height in inches)) × 703
Where:
- Weight = Your current weight in pounds
- Height = Your height in inches
- 703 = Conversion factor for imperial units
Example Calculation
Real-World Scenario:
A patient considering bariatric surgery wants to understand their current BMI and eligibility
Given:
- Height = 66 inches (5'6")
- Weight = 250 pounds
- Age = 42 years
Calculation:
BMI = (250 / (66 × 66)) × 703 = 40.3
Result: The patient has a BMI of 40.3, which falls into the "Obese Class III" category and meets the criteria for bariatric surgery without comorbidities.
Why This Calculation Matters
Practical Applications
- Determining eligibility for weight loss surgery
- Setting realistic post-surgery weight goals
- Tracking progress after bariatric procedures
Key Benefits
- Provides objective measure of surgical candidacy
- Helps set achievable weight loss targets
- Quantifies health risks associated with excess weight
Common Mistakes & Tips
Frequently Asked Questions
References & Disclaimer
Medical Disclaimer
This BMI calculator is for informational purposes only and is not a substitute for professional medical advice. Always consult with a qualified healthcare provider before making any decisions about weight loss surgery or treatment plans.
References
- American Society for Metabolic and Bariatric Surgery - Who is a Candidate for Bariatric Surgery - Guidelines for determining surgical eligibility
- National Institute of Diabetes and Digestive and Kidney Diseases - Bariatric Surgery Eligibility - Clinical guidelines and criteria
- CDC - About Adult BMI - Information on BMI calculation and interpretation
Accuracy Notice
BMI is a screening tool and does not directly measure body fat or health. Athletes and individuals with high muscle mass may have a high BMI despite low body fat. Other factors such as age, ethnicity, and distribution of fat also affect health risks. Discuss your results with a healthcare professional for personalized advice.
About the Author
Kumaravel Madhavan
Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.