Health Tools
BMI Calculator
Calculate your Body Mass Index to understand how your weight relates to your height and what it means for your overall health.
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Result Guide
Understanding Your Result
Here's what each range means and how to interpret your number.
Underweight
Below 18.5A BMI below 18.5 may indicate insufficient body weight, which can affect energy levels, immune function, and bone density. Consider speaking with a provider about nutritional support.
Healthy Weight
18.5 – 24.9This range is associated with the lowest risk of chronic disease. Maintaining a BMI in this range through balanced nutrition and regular activity supports long-term health.
Overweight
25.0 – 29.9A BMI in this range may indicate excess body weight, which can increase the risk of conditions like type 2 diabetes and hypertension. Lifestyle adjustments and medical guidance can help.
Obese
30.0 and aboveA BMI of 30 or higher is associated with significantly increased risk of cardiovascular disease, diabetes, and joint problems. Medical weight loss programs can provide effective, supervised support.
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The Science Behind the Number
What is BMI?
Body Mass Index (BMI) is a numerical value derived from your height and weight. It provides a quick screening tool to categorize weight status and identify potential health risks associated with being underweight or overweight. While BMI doesn't directly measure body fat, it correlates strongly with more direct measures for most adults.
How is BMI Calculated?
BMI is calculated by dividing your weight in kilograms by your height in meters squared (kg/m²). For imperial units, the formula is: (weight in lbs / height in inches²) × 703. Our calculator handles both systems automatically.
Limitations of BMI
BMI doesn't distinguish between muscle and fat mass. Athletes with high muscle mass may register as overweight despite being healthy. It also doesn't account for fat distribution, age, or sex differences. Use BMI as a starting point, not a complete health assessment.
When to Talk to a Provider
If your BMI falls outside the healthy range, or if you have concerns about your weight, energy levels, or metabolic health, a licensed provider can help. They'll consider your full health profile — not just a number — to recommend appropriate next steps.
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