BMI Calculator
Your Results
What is a BMI Calculator?
A BMI (Body Mass Index) Calculator is a simple tool that estimates whether you have a healthy body weight based on your height and weight. It provides a numerical value that categorizes you as underweight, normal weight, overweight, or obese, helping you assess potential health risks.
At NutritDiet, our BMI Calculator delivers instant results, along with personalized insights about your weight status and health recommendations.
How Does the BMI Calculator Work?
Our calculator uses the standard BMI formula:
BMI = weight (kg) / (height (m))²
Enter Your Details – Input your height (cm or feet/inches) and weight (kg or lbs).
Calculate BMI – The tool computes your BMI score automatically.
Get Results – See your BMI category and health insights instantly.
Why Knowing Your BMI is Important
Understanding your BMI helps you:
✅ Assess Weight-Related Health Risks – High BMI may indicate obesity-related conditions (diabetes, heart disease).
✅ Track Fitness Progress – Monitor weight changes over time.
✅ Set Realistic Goals – Helps in planning weight loss or muscle gain strategies.
✅ Improve Overall Health – Encourages healthier lifestyle choices.
BMI Categories & Health Implications
BMI Range | Category | Health Risk |
---|---|---|
Below 18.5 | Underweight | Nutritional deficiencies, weakened immunity |
18.5 – 24.9 | Normal Weight | Low risk (healthy range) |
25.0 – 29.9 | Overweight | Moderate risk of heart disease, diabetes |
30.0 and Above | Obese | High risk of severe health conditions |
How to Use the BMI Calculator
Select Unit Preference – Choose between metric (cm/kg) or imperial (feet/lbs).
Enter Your Height & Weight – Fill in accurate measurements.
Click “Calculate BMI” – Get instant results.
Review Recommendations – See personalized health tips based on your BMI.
Limitations of BMI
While BMI is a useful screening tool, it doesn’t account for:
Muscle Mass (Athletes may have high BMI but low body fat).
Bone Density & Fat Distribution (Waist-to-hip ratio is a better indicator for some).
Age & Gender Differences (BMI ranges vary slightly for men/women).
For a complete health assessment, consult a doctor or dietitian.
FAQ
FAQs About Water Intake

BMI is a general guideline but may not be precise for athletes, pregnant women, or elderly individuals. Body fat percentage tests (like DEXA scans) provide more accuracy.
The standard range (18.5–24.9) applies to most adults, though muscle mass can affect results.
If you’re actively managing weight, check every 2–3 months. Otherwise, once a year is sufficient.
Yes. Muscle weighs more than fat, so athletes may show a high BMI without excess fat.
Improve Diet:Â Focus on whole foods, reduce processed sugars.
Exercise Regularly:Â Mix cardio and strength training.
Consult a Professional:Â A dietitian can create a personalized plan.