BMI Calculator
📦 BMI Calculator Source Code $4.99
Get the complete, ready‑to‑deploy HTML file with all styling and logic. This is the exact code powering the demo above — no dependencies, works offline, and 100% client‑side. Calculates BMI using metric or imperial units, displays BMI score, weight category (underweight, normal, overweight, obese), and a visual range indicator. Also shows the healthy weight range for your height. Perfect for health, fitness, and wellness applications. One‑time purchase, lifetime access.
What Is a BMI Calculator?
Body Mass Index (BMI) is a widely used measure that estimates body fat based on height and weight. It's a screening tool used by healthcare professionals to categorize individuals as underweight, normal weight, overweight, or obese. While BMI doesn't measure body fat directly, it provides a useful indicator for most adults. This tool calculates BMI using the standard formula: weight (kg) divided by height (m) squared. It supports both metric and imperial units, and provides a visual range indicator to show where your BMI falls on the spectrum.
How to Use
- Choose your unit system — Metric (cm, kg) or Imperial (ft, in, lbs).
- Enter your height and weight in the provided fields.
- Click "Calculate BMI" — your BMI score appears instantly along with your weight category.
- Review the result — see your BMI value, category, and a visual indicator on the BMI range bar.
- Check the healthy weight range for your height to understand your ideal weight range.
Frequently Asked Questions
What do the BMI categories mean?
Underweight: BMI below 18.5 · Normal: 18.5–24.9 · Overweight: 25–29.9 · Obese: 30 and above. These ranges are based on WHO guidelines for adults.
Does this tool work offline?
Yes. Once the page loads, all processing happens locally in your browser. No network requests are made.
Is BMI accurate for everyone?
BMI is a screening tool, not a diagnostic tool. It may not accurately reflect body fat for athletes, elderly individuals, pregnant women, or people with certain body types. Always consult a healthcare professional for a comprehensive health assessment.
Disclaimer: This tool is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for health-related decisions.