BMI
Check Your BMI in Seconds — Start Your Health Journey Today
Your health story has to start somewhere, and the BMI calculator is one of the simplest tools to help you understand your weight status. No complicated formulas, no medical jargon — just a clear number that gives you direction.
Why BMI Still Matters Today
It’s not the whole story, but it’s the smart start. BMI gives you a fast, global-standard measurement of where your weight stands right now.
People use the BMI to quickly find out whether they’re:
Underweight
In a healthy range
Overweight
or in an obesity category
How the Vanguard Arena BMI Calculator Works
Using the BMI is as simple as entering your height and weight.
That’s all.
You can choose to calculate your BMI:
KG + Cm (our calculator in kg and cm option)
lbs + Feet/Inches
BMI calculator
Your BMI is……
| BMI | Classification |
|---|---|
| less than 18.5: | Underweight |
| 18.5 – 24.9: | Normal weight |
| 25 – 29.9: | Overweight |
| 30 – 34.9: | Class I Obese |
| 35 – 39.9: | Class II Obese |
| 40 upwards: | Class III Obese |
How BMI Is Calculated (Formula)
BMI = weight (kg) ÷ height² (m²)
OR
BMI = 703 × weight (lbs) ÷ height² (in²)
Our tool does the math for you, but knowing the formula helps you understand what’s happening behind the scenes.
BMI Chart for Adults (18+ Years)
The World Health Organisation (WHO) and CDC follow the same universal categories:
| BMI Range | Category |
|---|---|
| Below 16 | Severe Thinness |
| 16 – 16.9 | Moderate Thinness |
| 17 – 18.4 | Mild Thinness |
| 18.5 – 24.9 | Normal Weight |
| 25 – 29.9 | Overweight |
| 30 – 34.9 | Obese Class I |
| 35 – 39.9 | Obese Class II |
| 40+ | Obese Class III |
BMI for Children & Teens
BMI works differently for anyone under 20 because growth patterns change by age and gender.
That’s why standard adult calculators don’t apply here.
WHO and CDC use percentiles:
| Category | Percentile |
|---|---|
| Underweight | Below 5% |
| Healthy Weight | 5–85% |
| Risk of Overweight | 85–95% |
| Overweight | 95% and above |
Learn Your BMI
by BMI Calculator
- Below 18.5
- Underweight
- 18.5 - 24.9
- Healthy
- 25.0 - 29.9
- Overweight
- 30.0 - and Above
- Obese
BMR Metabolic Rate / BMI Body Mass Index
Why Your BMI Number Matters
This calculator for BMI gives you more than a number, it gives clues about your overall health.
A high or low score may link to issues such as:
Risks of Being Overweight
- Heart disease
- Type II diabetes
- High blood pressure
- Osteoarthritis
- Sleep apnea
- Liver problems
- Breathing issues
- Higher long-term mortality risk
Risks of Being Underweight
- Weakened immunity
- Frequent illness
- Bone density loss
- Nutrient deficiencies
- Fatigue
- Hair loss
- Fertility problems
If your BMI calculator result concerns you, early action can protect your long-term health.
Is BMI Always Accurate?
Muscle
Fat
Water
Bone mass
Think of BMI as a helpful first check, not the full picture.
How to Use Your BMI Result the Right Way
- Is my score in the healthy range?
- Or do I need to adjust my diet?
- Whether it is time to start a brisk walk?
- Should I speak with a trainer or nutrition expert?
Tracking BMI every 2–4 weeks helps you stay consistent (If your goal is weight change).
Where Does Your Health Stand? Check Your BMI Now
This fitness doesn’t need complicated formulas or long explanations — sometimes, all it takes is one quick check. This BMI calculator is built for everyday people like you: quick, simple, and surprisingly accurate. Then either you’re checking your BMI for the very first time or keeping an eye on your progress, this tool gives you a clearer picture of where your body stands.
Just take one minute:
- Enter your height and weight.
- Hit calculate.
- Instantly see where you are — and where you can improve.
FAQs
1. Well, what actually does a BMI calculator do?
It compares your height and weight to show whether you fall under underweight, normal, overweight, or obese — giving you a simple snapshot of your health status.
2. Does the BMI calculator work for men and women?
Absolutely. The BMI formula stays the same for all genders, so anyone can use it to check their number accurately
3. How do I calculate BMI in kg and feet?
The basic formula is: BMI = weight (kg) ÷ height² (m²).
But honestly? No need to crunch numbers. Just use our BMI calculator in kg and feet, and it does the maths instantly — no effort needed
