⚖️ BMICalculator

中文

BMI — Body Mass Index Calculator

Enter 50 – 300 cm
Enter 10 – 500 kg
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Underweight <18.5 Normal 18.5–24.9 Overweight 25–29.9 Obese ≥30
Ideal Weight Range
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BMI Category
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History

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Dual Units

Supports both metric (cm/kg) and imperial (ft,in/lb) with one-click toggle.

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Visual Scale

Color-coded BMI scale bar shows your index position at a glance.

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History Tracking

Automatically saves your records and displays BMI trends in a bar chart.

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Ideal Weight

Calculates the ideal weight range (BMI 18.5–24.9) based on your height.

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100% Private

All calculations happen in your browser. Data is stored locally only, never uploaded.

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Completely Free

No registration, no limits. Free forever.

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Frequently Asked Questions

What is BMI?
BMI (Body Mass Index) is calculated by dividing your weight in kilograms by the square of your height in meters. It is an internationally used indicator to assess body weight relative to height.
What is a normal BMI range?
According to WHO standards, a BMI of 18.5–24.9 is considered normal. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is obese.
Does BMI fully reflect health?
BMI is a simple screening tool but cannot distinguish between muscle and fat. Athletes may have a high BMI due to muscle mass. Consider using body fat percentage and other metrics for a complete assessment.
Where is my data stored?
All calculation records are stored only in your browser's localStorage. No data is ever uploaded to any server, ensuring complete privacy.
Is this BMI standard applicable to children?
This tool uses adult BMI standards. For children and adolescents, BMI assessment must account for age and gender. Please consult a healthcare professional.