Body Mass Index (BMI) Calculator
Your BMI: 0
Category: -
Ideal Weight Range: -
Daily Caloric Needs: -
BMR: -
TDEE: -
What is BMI & Why Is It Important?
Body Mass Index (BMI) is a numerical value derived from a person’s height and weight. It helps categorize individuals into different weight classes, such as underweight, normal weight, overweight, or obese.
Why does BMI matter?
- It serves as a quick screening tool for potential health risks.
- It helps track fitness progress and set weight goals.
- It’s used by doctors and nutritionists for assessing health conditions.
Formula for BMI Calculation:
- Metric: BMI = Weight (kg) ÷ Height² (m²)
- Imperial: BMI = (Weight (lbs) ÷ Height² (in²)) × 703
Features of Our BMI Calculator
- Supports Both Metric & Imperial Units
You can switch between kilograms & centimeters or pounds & feet/inches with ease.
- Feet & Inches Input for Imperial Units
No more manual conversion—just enter height in feet and inches separately!
- Real-Time BMI Calculation
As soon as you enter your details, your BMI, category, and ideal weight range will update automatically.
- Ideal Weight Suggestion
The calculator displays your healthy weight range based on your height.
- BMR & TDEE Calculation
Apart from BMI, the calculator also estimates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to help you plan your diet.
- Visually Appealing BMI Chart
A color-coded chart helps you understand where your BMI stands in terms of health risks.
- Mobile-Friendly & Easy to Use
Designed for seamless use on desktops, tablets, and smartphones.
- Copy & Share Results
You can easily copy your BMI details to share with friends or doctors.
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How to Use the BMI Calculator?
Using our BMI Calculator is super simple! Just follow these steps:
Step 1: Select the Unit System
Choose between Metric (kg, cm) or Imperial (lbs, feet & inches).
Step 2: Enter Your Weight
- If you selected Metric, enter weight in kilograms (kg).
- If you selected Imperial, enter weight in pounds (lbs).
Step 3: Enter Your Height
- If you selected Metric, enter height in centimeters (cm).
- If you selected Imperial, enter height in feet and inches separately.
Step 4: Enter Your Age & Gender
- Age is required for BMR & TDEE calculations.
- Select your gender for more accurate health insights.
Step 5: View Your Results
- BMI Value: Displays your calculated Body Mass Index.
- BMI Category: Shows whether you are underweight, normal weight, overweight, or obese.
- Ideal Weight Range: Suggests the healthy weight range based on your height.
- Calories & Energy Expenditure: Gives an estimate of your daily caloric needs (TDEE).
- BMR Calculation: Shows how many calories your body burns at rest.
Understanding BMI Categories & Health Risks
| BMI Range | Category | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Risk of nutritional deficiencies & weakened immune system |
| 18.5 – 24.9 | Normal Weight | Healthy weight range, lower risk of diseases |
| 25 – 29.9 | Overweight | Increased risk of heart disease, diabetes, hypertension |
| 30 & above | Obese | High risk of severe health problems like stroke, heart disease, diabetes |
Note:
- Muscle mass can affect BMI readings (e.g., athletes may have a high BMI but low body fat).
- BMI does not differentiate between fat and muscle, so it should be used as a general health indicator rather than a sole diagnostic tool.
Frequently Asked Questions (FAQs)
1. What is the most accurate way to calculate BMI?
Our BMI calculator follows the standard BMI formula, ensuring accurate results. It also considers feet & inches entry for better usability.
2. Does BMI vary for men and women?
The BMI formula is the same for men and women, but our calculator provides gender-specific BMI categories & ideal weight suggestions.
3. Is BMI a perfect measure of health?
No, BMI is a general guideline. It does not consider muscle mass, bone density, or body fat percentage. For a more complete health assessment, consider waist-to-hip ratio, body fat percentage, and fitness levels.
4. How does this calculator handle height in feet and inches?
Our calculator allows separate input for feet & inches, then automatically converts the height into inches and applies the BMI formula.
5. Why does the calculator show different caloric needs for men and women?
Men and women have different basal metabolic rates (BMRs) due to differences in muscle mass, metabolism, and hormones. Our calculator adjusts BMR & TDEE accordingly.
6. Can I use this calculator to track weight loss progress?
Absolutely! If you lose or gain weight, you can re-enter your details to see how your BMI changes over time.