BMI Calculator

Our free BMI Calculator helps you quickly check your Body Mass Index by entering your height and weight. Instantly find out if you are underweight, normal, overweight, or obese based on standard health categories. This easy-to-use BMI tool is perfect for tracking your fitness goals, maintaining a healthy lifestyle, and understanding your ideal weight range.

Input Details
Height:
cm
ft in
Switch to ft/in
Weight:
kg
lb
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Age (optional):
Gender (optional):
Results
Your BMI:
Category:
Healthy BMI Range: 18.5 - 25
BMI Categories (WHO Standard)
BMI Range Category
BMI < 16 Severe Thinness
16 ≤ BMI < 17 Moderate Thinness
17 ≤ BMI < 18.5 Mild Thinness
18.5 ≤ BMI < 25 Normal
25 ≤ BMI < 30 Overweight
30 ≤ BMI < 35 Obese Class I
35 ≤ BMI < 40 Obese Class II
BMI ≥ 40 Obese Class III

BMI Results and How to Improve Your Weight

Understanding your BMI (Body Mass Index) helps you identify whether you are underweight, at a healthy weight, overweight, or obese. Each category has different health implications, and making small lifestyle changes can improve your overall well-being. Below is a breakdown of BMI results and effective ways to manage your weight.

BMI Calculator

Underweight (BMI below 18.5)

Being underweight may indicate nutritional deficiencies, low energy, or weakened immunity.

Tips to Improve:

  • Eat calorie-dense foods such as nuts, seeds, avocados, and whole grains.
  • Increase protein intake to build muscle (chicken, eggs, beans, fish).
  • Include healthy fats like olive oil and peanut butter.
  • Do strength training to gain lean muscle.
  • Consult a nutritionist for a personalized meal plan.

Normal Weight (BMI 18.5 – 24.9)

A normal BMI indicates a healthy weight and reduced risk of chronic diseases.

Tips to Maintain:

  • Follow a balanced diet with fruits, vegetables, lean protein, and whole grains.
  • Exercise regularly with a mix of cardio and strength training.
  • Stay hydrated and get 7–8 hours of quality sleep.
  • Monitor your weight and maintain consistency in lifestyle habits.

Overweight (BMI 25 – 29.9)

Being overweight increases the risk of diabetes, high blood pressure, and heart problems.

Tips to Reduce Weight:

  • Control portion sizes and cut down on sugary, fried, and processed foods.
  • Walk at least 8,000–10,000 steps daily or try swimming, cycling, or jogging.
  • Combine cardio workouts with strength training to burn fat and preserve muscle.
  • Stay consistent with healthy eating habits and track progress.

Obesity (BMI 30 or higher)

Obesity is linked to a higher chance of serious health issues like heart disease, stroke, and type 2 diabetes.

Tips to Lose Weight Safely:

  • Adopt a calorie-controlled, nutrient-rich diet.
  • Eat more vegetables, lean proteins, and fiber-rich foods.
  • Limit fast food, sodas, and refined carbs.
  • Aim for at least 150 minutes of physical activity per week.
  • Seek medical or professional nutrition advice for a tailored plan.

👉 Use our BMI Calculator to find your Body Mass Index and start making the right lifestyle changes today!

Check out our other free health and fitness calculators such as Basal Metabolic Calculator, Calorie Calculator, Body Fat Calculator and Daily Steps to Ideal Weight Calculator.