BMI Calculator
BMI (Body Mass Index) is a widely used tool that tells you if you’re underweight, normal, overweight, or obese — based on your height and weight. With our free BMI Calculator, you can instantly calculate your BMI and see what it means for your health.
⚖️ What Is BMI?
BMI stands for Body Mass Index — a number derived from your height and weight. It’s used to estimate body fat and assess your risk of diseases like:
- Heart disease ❤️
- Type 2 diabetes 🍬
- High blood pressure 🩸
- Sleep apnea 😴
While it doesn’t measure body fat directly, BMI is a useful screening tool for adults.
🔢 How the BMI Calculator Works
Our tool is simple, flexible, and mobile-friendly. You can calculate your BMI using:
- Imperial Units (lbs, feet/inches)
- Metric Units (kg, cm)
You’ll also get:
✅ Your BMI value
✅ BMI category (underweight, normal, overweight, etc.)
✅ Health risk assessment
✅ Recommended healthy weight range
✅ How much to gain/lose (if needed)
🧮 Example: What’s a Healthy BMI?
A normal BMI falls between 18.5 and 24.9. Here’s how the categories break down:
| BMI Range | Category | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Low (but risk of other issues) |
| 18.5 – 24.9 | Normal weight | Low |
| 25.0 – 29.9 | Overweight | Moderate |
| 30.0 – 34.9 | Obese (Class I) | High |
| 35.0 – 39.9 | Obese (Class II) | Very High |
| 40+ | Obese (Class III) | Extremely High |
🎯 Healthy Weight Goal Example
Let’s say:
- Height: 5 ft 8 in
- Weight: 180 lbs
- BMI: ~27.4 → Overweight
According to the calculator:
- Healthy weight range: 122.9 – 164.9 lbs
- You’d need to lose ~15 lbs to reach the “normal” category.
Try it for yourself to find your target!
👨⚕️ Why Does BMI Matter?
While BMI doesn’t consider muscle mass or body composition, it does give a solid overall view of health risks tied to weight. It’s especially useful for:
- Tracking weight loss or gain
- Planning fitness goals
- Assessing diet effectiveness
- Discussing weight with your doctor
🧑🔬 Who Can Use This BMI Calculator?
This calculator is best for:
- Adults (age 18–65)
- Men & women
- Fitness trainers and health coaches
- Anyone watching their health
⚠️ Note: BMI is not as accurate for:
- Children/teens (use percentile charts instead)
- Bodybuilders or athletes
- Elderly individuals with muscle loss
💪 How to Improve Your BMI (If Needed)
- 🍎 Eat more whole foods (vegetables, fruit, lean protein)
- 🏃♀️ Exercise 30+ minutes a day
- 🚱 Reduce sugary drinks and snacks
- 💤 Get 7–9 hours of sleep
- 📝 Track your progress using this calculator weekly
📲 Try the BMI Calculator Now
Stop guessing. Start tracking. Whether you’re on a fitness journey or just curious about your health, this BMI Calculator helps you:
✅ Set realistic goals
✅ Make informed lifestyle changes
✅ Know your health risk early
👉 Just enter your weight and height — results appear instantly.
📌 FAQs
❓ How is BMI calculated?
For metric:
BMI = weight (kg) ÷ height² (m²)
For imperial:
BMI = (weight (lbs) ÷ height² (in²)) × 703
The calculator handles the math for you.
❓ What is the healthiest BMI?
Generally, a BMI between 18.5 – 24.9 is considered healthy for most adults.
❓ Can I use this if I’m pregnant?
No — BMI isn’t an accurate tool during pregnancy. Consult your doctor instead.
❓ Does gender affect BMI?
Not in the formula, but men and women carry fat differently. Optional gender input may be used for advanced health risk classification in some medical tools (not this one).
✅ Use the BMI Calculator Free – Anytime, Anywhere
💻 No login
📱 Mobile-friendly
🧠 Smart results
📋 Copy to clipboard
🌍 Supports kg/cm & lbs/ft
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