BMI Calculator – Calculate Your Body Mass Index

Maintaining a healthy weight is crucial for overall wellness. The Body Mass Index (BMI) is a simple metric that helps you understand whether your weight is in a healthy range for your height. With the BMI Calculator, you can quickly calculate your BMI, track changes over time, and make informed lifestyle decisions.

Why BMI Matters

• Health Assessment: Identifies potential health risks related to weight.
• Weight Management: Helps plan diet and exercise goals.
• Medical Screening: Used by doctors to monitor and advise patients.
• Fitness Goals: Helps athletes and fitness enthusiasts monitor body composition.

BMI Formula

BMI is calculated using the following formula:

BMI = Weight (kg) / (Height (m))²

Alternatively, for pounds and inches: BMI = (Weight (lb) × 703) / (Height (in))²

BMI Categories

• Underweight: BMI < 18.5
• Normal weight: 18.5 ≤ BMI < 24.9
• Overweight: 25 ≤ BMI < 29.9
• Obese: BMI ≥ 30

Step-by-Step Example 1: Using Metric Units

Problem: Calculate BMI for a person weighing 70 kg and 1.75 m tall.
Formula: BMI = Weight / (Height)²
Solution: BMI = 70 / (1.75 × 1.75) = 70 / 3.0625 ≈ 22.86
Category: Normal weight

Step-by-Step Example 2: Using Imperial Units

Problem: Calculate BMI for a person weighing 154 lb and 69 in tall.
Formula: BMI = (Weight × 703) / (Height)²
Solution: BMI = (154 × 703) / (69 × 69) = 108,262 / 4,761 ≈ 22.74
Category: Normal weight

How the BMI Calculator Works

1. Select your measurement units: Metric (kg/m) or Imperial (lb/in).
2. Enter your weight and height in the chosen units.
3. The calculator applies the BMI formula automatically.
4. Receive your BMI value along with the weight category.

FAQs – BMI Calculator

1. What is BMI?
BMI is a measure of body fat based on height and weight.

2. Can BMI determine body fat accurately?
BMI is an estimate; it may not account for muscle mass or bone density.

3. What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered normal weight for most adults.

4. Can children use BMI?
Children have different growth charts; pediatric BMI calculators are recommended.

5. Can I use the calculator for athletes?
Yes, but athletes may have higher muscle mass; BMI may overestimate body fat.

6. Is BMI affected by age?
BMI doesn’t account for age, but health risk thresholds may vary with age.

7. Can I track my BMI over time?
Yes, recording weight and height changes allows you to track BMI trends.

8. Does BMI differ between genders?
BMI itself does not differ, but interpretation may vary slightly between males and females.

9. Can BMI predict health risks?
It is an indicator of potential risks such as obesity, heart disease, and diabetes.

10. Is the BMI Calculator free?
Yes, it is free and easy to use online.