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BMI Calculator — Smart Health & Weight Recommendation Tool

Check your Body Mass Index and get a personalized target weight range with safe, general fitness guidance.

Your BMI

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UnderweightNormalOverweightObese

Recommendation

    Target Weight (Healthy BMI Range)

    Disclaimer: This BMI Calculator provides general health information only and is not intended to diagnose, treat, cure, or prevent any medical condition. BMI is a screening tool and does not account for factors such as muscle mass, age, pregnancy, or underlying health conditions. Always consult a qualified doctor or registered dietitian before making changes to your diet, exercise routine, or weight management plan.

    Free BMI Calculator — Check Your Body Mass Index Instantly

    ⚕️ Important: This tool provides general fitness guidance only and is not a medical diagnosis. For personalized medical advice, please consult a doctor or registered dietitian, especially before starting any new diet or exercise program.

    Body Mass Index (BMI) is one of the most widely used health screening tools in the world, helping you quickly understand whether your weight falls within a healthy range for your height. Our free BMI Calculator supports Metric, Imperial, and a unique Hybrid mode (kilograms + feet/inches) — the exact combination commonly used across Pakistan, India, and much of South Asia.

    Beyond just the number, this tool now acts as a smart health companion: it shows your ideal target weight range for your height, and gives safe, general recommendations tailored to your BMI category — whether that's healthy weight gain, maintenance, or gradual fat loss.

    Why Use This BMI Calculator?

    • Three unit systems: Metric (kg/cm), Imperial (lbs/ft-in), and Hybrid (kg/ft-in) for South Asian users.
    • Accurate conversions: All calculations happen on a consistent metric basis internally, eliminating common unit-mixing errors.
    • Instant category: See immediately whether you're Underweight, Normal, Overweight, or Obese.
    • Calculation history: Track your BMI over time using your browser's local storage.

    How to Use the BMI Calculator

    Step 1: Choose your preferred unit system — Metric, Imperial, or Hybrid.

    Step 2: Enter your weight in the corresponding unit (kg or lbs).

    Step 3: Enter your height (in cm, or feet and inches).

    Step 4: Click "Calculate BMI" to see your result and category instantly.

    Common Use Cases

    • General health and fitness self-monitoring
    • Tracking weight loss or weight gain progress over time
    • Pre-screening before gym memberships or fitness programs
    • School or educational health awareness projects
    • Quick reference before consulting a doctor or nutritionist

    Privacy & Security

    Your height, weight and BMI results are never uploaded to any server. All calculations run locally in your browser, and history is stored only in your own device's local storage.

    BMI Categories

    • Below 18.5: Underweight
    • 18.5 – 24.9: Normal weight
    • 25 – 29.9: Overweight
    • 30 and above: Obese

    BMI is a general indicator and does not account for muscle mass, age, or body composition. Consult a healthcare professional for personalized advice.

    Frequently Asked Questions

    Why does my BMI change when I switch units? +
    It shouldn't — this tool converts all values to metric (kg and meters) internally before calculating, so switching units and re-entering the same height/weight always gives the same BMI.
    Many people in South Asia measure height in feet/inches but weight in kilograms. Hybrid mode supports exactly that combination correctly.
    BMI is a general screening tool. It may not be accurate for athletes, elderly people, or pregnant women.
    For most adults, a BMI between 18.5 and 24.9 is considered healthy according to WHO guidelines.
    BMI = weight (kg) ÷ height (m)². The result is a single number used to categorize weight status.
    Yes, completely free with no signup and no data collection.
    No, BMI only estimates weight category based on height and weight, not actual body fat.
    Yes, select Imperial mode for pounds and feet/inches input.
    No, all calculations happen locally in your browser only.
    The standard formula doesn't factor in age or gender — a known limitation of BMI as a health metric.
    No. Recommendations are general, safe fitness and diet guidance based on your BMI category — not a medical diagnosis. Always consult a doctor or dietitian for personalized advice.
    Your target range is based on the healthy BMI range (18.5–24.9) applied to your height, showing the minimum and maximum weight considered healthy for someone of your height.

    Related Tools

    Check out our Calorie Calculator, Weight Converter, and Age Calculator for more health and fitness insights.

    Ready to check your BMI? Enter your details above for an instant, free result.

    Share Your Experience

    Found this tool useful? Have a suggestion or found a bug? Send your feedback directly to us — we read every message.