Reverse BMI Calculator
Calculate the weight needed to reach your target BMI in different units.
Standard BMI Calculator
(300×600)
(320×100)
BMI Categories for Adults (CDC Standard)
| BMI Range | Weight Status | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | High nutritional risk |
| 18.5 – 24.9 | Healthy Weight | Lowest risk |
| 25.0 – 29.9 | Overweight | Increased risk |
| 30.0 and Above | Obesity | High risk |
WHO vs CDC BMI Standards Comparison
| BMI Range | CDC Classification | WHO Classification |
|---|---|---|
| < 16.0 | – | Severe Thinness |
| 16.0 – 16.9 | – | Moderate Thinness |
| 17.0 – 18.4 | Underweight | Mild Thinness |
| 18.5 – 24.9 | Healthy Weight | Normal Range |
| 25.0 – 29.9 | Overweight | Pre-obese |
| ≥ 30.0 | Obesity | Obese |
Note: WHO provides more granular underweight categories. WHO Guidelines
⚠️ Disclaimer: BMI is a screening tool only. It doesn’t measure body fat directly. Consult a healthcare provider for personalized assessment.
Reverse BMI Calculator – Find Your Ideal Weight for a Target BMI
What is a Reverse BMI Calculator?
A Reverse BMI Calculator is a powerful health tool that helps you determine the exact weight you need to achieve a specific Body Mass Index (BMI). Unlike a standard BMI calculator that tells you your BMI based on your current weight and height, this tool works backward—input your height and target BMI, and it calculates your ideal weight in kilograms (kg) or pounds (lbs).
This calculator is perfect for:
✔ Weight loss/gain goals – Find the exact weight needed to reach a healthy BMI.
✔ Fitness planning – Athletes and bodybuilders can use it to track BMI targets.
✔ Medical guidance – Doctors and nutritionists recommend it for weight management.
Why Use Our Reverse BMI Calculator?
Our Reverse BMI Calculator stands out because it offers:
✅ Multiple Unit Support – Switch between kg/cm and lbs/ft-in with one click.
✅ Real-Time Results – No need to press “Calculate”—see instant updates as you type.
✅ BMI Category Indicator – Color-coded results show if your target BMI is Underweight, Normal, Overweight, or Obese.
✅ Mobile & Desktop Friendly – Works perfectly on all devices.
✅ No Ads or Popups – Clean, distraction-free design.
How to Use the Reverse BMI Calculator
Step 1: Choose Your Unit System
- Metric (kg/cm) – Enter height in centimeters (cm) and target BMI.
- Imperial (lbs/ft-in) – Enter height in feet & inches and target BMI.
Step 2: Enter Your Details
- Height – Input your height in your preferred unit.
- Target BMI – Enter your desired BMI (e.g., 18.5–24.9 for a healthy range).
Step 3: Get Your Ideal Weight
The calculator instantly displays:
- Your target weight in kg and lbs
- BMI category (Normal, Overweight, etc.)
BMI Categories Explained
| BMI Range | Category | Health Risk |
|---|---|---|
| < 18.5 | Underweight | Possible malnutrition |
| 18.5–24.9 | Normal (Healthy) | Low risk |
| 25–29.9 | Overweight | Moderate risk |
| ≥ 30 | Obese | High risk |
Our Reverse BMI Calculator helps you stay within the healthy range (18.5–24.9) by showing the exact weight you need.
Who Should Use This Calculator?
- People on a weight loss journey – Find your ideal weight for a healthy BMI.
- Athletes & bodybuilders – Track BMI for fitness goals.
- Doctors & dietitians – Recommend target weights to patients.
- Health-conscious individuals – Check if your weight aligns with BMI guidelines.
Benefits of a Reverse BMI Calculator
🔹 Precision – No guesswork—know exactly what weight to aim for.
🔹 Flexibility – Works in kg/cm or lbs/ft-in.
🔹 Fast & Easy – No waiting—results appear instantly.
🔹 Free & No Login – Use it anytime, no sign-up required.
Frequently Asked Questions (FAQ)
1. How accurate is the Reverse BMI Calculator?
It uses the official BMI formula (weight/height²), so results are medically accurate. However, BMI doesn’t account for muscle mass, so athletes may get higher BMIs even if healthy.
2. What’s the best BMI to aim for?
A BMI of 18.5–24.9 is considered healthy. However, consult a doctor for personalized advice.
3. Can I use this calculator on my phone?
Yes! Our Reverse BMI Calculator is fully optimized for mobile & desktop.
4. Does this tool store my data?
No—all calculations happen in your browser. We don’t save any information.
Calculate your BMI accurately with our WHO-standard BMI calculator. Check your weight status & health risks instantly. Fast, free, and reliable!
Conclusion: Achieve Your Weight Goals with Precision
Whether you’re losing weight, gaining muscle, or maintaining health, our Reverse BMI Calculator gives you the exact numbers you need. With dual-unit support, real-time results, and a mobile-friendly design, it’s the easiest way to find your ideal weight for any BMI.
Try it now—no downloads, no fees, just instant results! 🚀
Looking for other calculations tools ? We also offer:
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