BMI Calculator
Your BMI: 0
Category | BMI Range |
---|---|
Underweight | < 18.5 |
Normal weight | 18.5 – 24.9 |
Overweight | 25 – 29.9 |
Obesity | ≥ 30 |
Welcome to our BMI Calculator, a free and easy-to-use tool that helps you determine your Body Mass Index (BMI). Whether you're tracking your health, planning a fitness journey, or just curious about your weight status, this tool is designed for you. It’s mobile-friendly, works with both metric and imperial units, and provides detailed results tailored to your age and gender.
What is BMI?
BMI (Body Mass Index) is a simple calculation that uses your height and weight to determine if you’re underweight, normal weight, overweight, or obese. It’s a widely used indicator of overall health and helps you understand if your weight is in a healthy range for your height.

How to Use the BMI Calculator
Using our BMI Calculator is simple and takes just a few steps:
- Select Your Unit: Choose between metric (kg, cm) or imperial (lbs, feet/inches) units.
- Enter Your Details:
- Age: Input your age (1-120 years).
- Gender: Select your gender (Male or Female).
- Weight: Enter your weight in kilograms (kg) or pounds (lbs).
- Height: Enter your height in centimeters (cm) or feet/inches.
- Calculate: Click the Calculate BMI button to see your results.

What Your BMI Results Mean
After calculating your BMI, you’ll see:
- Your BMI Value: A number that represents your weight status.
- BMI Category: Underweight, Normal, Overweight, or Obesity.
- BMI Meter: A visual progress bar showing where your BMI falls on the scale.
- Personalized Advice: Health tips based on your age, gender, and BMI category.
Here’s a table to help you understand the BMI categories:
BMI Category | BMI Range | Health Status |
---|---|---|
Underweight | Less than 18.5 | You may need to gain weight. Consult a healthcare professional for advice. |
Normal Weight | 18.5 – 24.9 | Your weight is healthy. Maintain a balanced diet and exercise regularly. |
Overweight | 25 – 29.9 | You may need to lose weight. Focus on a healthy diet and physical activity. |
Obesity | 30 or higher | Consult a healthcare professional for weight management and health advice. |
Why Use Our BMI Calculator?
Our BMI Calculator stands out because:
- Mobile-Friendly: Works seamlessly on all devices, including smartphones and tablets.
- Detailed Results: Provides not just your BMI but also personalized health advice.
- Visual BMI Meter: See your BMI on a colorful scale for better understanding.
- Age and Gender Insights: Get tailored recommendations based on your age and gender.
- Free and Easy: No sign-up or downloads required. Just open the tool and start calculating.
Benefits of Knowing Your BMI
Understanding your BMI can help you:
- Monitor Your Health: Track changes in your weight status over time.
- Set Fitness Goals: Plan your diet and exercise routines based on your BMI.
- Prevent Health Risks: Identify potential risks like obesity-related diseases (e.g., diabetes, heart disease).
- Stay Motivated: Use your BMI as a benchmark to achieve a healthier lifestyle.
BMI Categories and Health Risks
Here’s a detailed table showing BMI categories and associated health risks:
BMI Category | BMI Range | Health Risks |
---|---|---|
Underweight | < 18.5 | Weak immune system, nutrient deficiencies, osteoporosis. |
Normal Weight | 18.5 – 24.9 | Lowest risk of weight-related health issues. |
Overweight | 25 – 29.9 | Increased risk of high blood pressure, diabetes, and heart disease. |
Obesity | ≥ 30 | High risk of severe health conditions like stroke, heart disease, and diabetes. |
People Also Ask
How many BMI is good?
A healthy BMI (Body Mass Index) typically falls between 18.5 and 24.9. This range is considered optimal for maintaining overall health and reducing the risk of chronic diseases.
What is the BMI of a 5.5-foot female in KG?
A 5.5-foot (5 feet 6 inches or 167 cm) female's BMI depends on weight. The formula for BMI is:
BMI = Weight (kg) / (Height (m)²)
For example, if the female weighs 60 kg, the BMI would be:
BMI = 60 / (1.67 × 1.67) ≈ 21.5 (which is a normal BMI range).
How to check body fat?
You can check body fat percentage using methods like:
BMI Calculator (basic estimate)
Body Fat Calipers (skinfold measurements)
Bioelectrical Impedance Scale (smart scales)
DEXA Scan (most accurate but costly)
Waist-to-Hip Ratio (measuring fat distribution)1
What's a good BMI by age?
A good BMI varies slightly with age. Here are general recommendations:
Children (2-18 years): BMI percentiles are used instead of a fixed range.
Adults (19-64 years): A BMI between 18.5 and 24.9 is ideal.
Seniors (65+ years): A BMI slightly above 24 may be healthier due to muscle loss.
How do I reduce my BMI?
To reduce BMI, you should:
Eat a balanced diet (high in protein and fiber, low in processed foods)
Exercise regularly (cardio, strength training, and flexibility exercises)
Maintain portion control to manage calorie intake
Stay hydrated and get enough sleep to support metabolism
Monitor progress using BMI calculators or weight tracking apps
Is a BMI of 25 chubby?
A BMI of 25.0 to 29.9 falls in the overweight category. While not necessarily "chubby," it indicates excess weight that could pose health risks if not managed.
Is BMI 20 slim?
Yes, a BMI of 20 falls within the normal weight range (18.5-24.9) and is considered slim but healthy.
What is BMI for a 5'5" female?
For a 5'5" (165 cm) female, BMI depends on weight. Here are some examples:
50 kg → BMI 18.4 (underweight)
55 kg → BMI 20.2 (normal)
60 kg → BMI 22.0 (normal)
70 kg → BMI 25.7 (overweight)
What is normal BMI for 20 years?
For a 20-year-old adult, a normal BMI is between 18.5 and 24.9. However, body composition (muscle vs. fat) should also be considered.
What is the BMI of 70 kg?
BMI is calculated as:
BMI = Weight (kg) / (Height (m)²)
For example:
Height 1.60m (5’3”) → BMI = 27.3 (overweight)
Height 1.70m (5’7”) → BMI = 24.2 (normal weight)
Height 1.80m (5’11”) → BMI = 21.6 (normal weight)
Start Your Health Journey Today
Use our BMI Calculator to take the first step toward a healthier you. It’s fast, accurate, and designed to help you make informed decisions about your health. Whether you’re aiming to lose weight, gain muscle, or simply stay healthy, this tool is here to guide you.