Is BMI a diagnosis tool?

No. BMI is a screening metric and should be interpreted alongside other clinical indicators.

Can BMI be useful for tracking trends?

Yes. Repeated BMI measurements can help you monitor directional changes over time.

BMI (Body Mass Index) is a screening metric calculated from height and weight to estimate body fat category.

Is BMI a diagnostic tool?

No. BMI is a screening tool and does not diagnose health or body composition on its own.

How often should I update my BMI?

Update when your weight or height changes so the estimate reflects your current measurements.

BMI Calculator

Calculate your Body Mass Index (BMI) using height and weight. Provides BMI category and healthy weight range.

Scratchpad (not saved)

Save to create a persistent, shareable workspace.

What This Calculator Does

Compute body mass index from height and weight to quickly classify weight status using standard BMI category thresholds.

It combines Weight, Height (feet), Height (inches) to estimate BMI, Category, Healthy Weight Range.

Formula & Method

Imperial formula: BMI = (weight in pounds x 703) / (height in inches)^2. The same result in metric uses BMI = kg / m^2. Core relationship: R = f\left(x_{1}, x_{2}, x_{3}\right) where R is BMI.

Notation used in the formulas: R = BMI; x_{1} = Weight; x_{2} = Height (feet); x_{3} = Height (inches).

Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.

Use BMI as a broad screening metric for trend tracking. Combine it with other health markers for more complete decision-making.

Inputs Used

Weight: Your weight in pounds
Height (feet): Feet portion of your height
Height (inches): Inches portion of your height

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