BMI Result: 5ft 6in, 251 lbs (BMI 40.5) - Male
According to CDC and WHO standards, a BMI of 40.5 is classified as Obese.
A male who is 5ft 6in tall and weighs 251lbs has a BMI of 40.5, which falls into the Obese category used by the CDC and WHO for adults.
| Category | BMI Range |
|---|---|
| Underweight | < 18.5 |
| Obese | ≥ 30 |
| Obese | ≥ 30 |
Healthy weight range for 5ft 6in: 115 lbs – 154 lbs
Metric: 167.6 cm, 113.9 kg
📏 Healthy waist circumference for your height: 35" – 40" (below 40" for male)
So you're 5ft 6in and weigh 251lbs. Your BMI is 40.5, which falls into the Obese category according to CDC and WHO standards. Let's break down what this means for your health.
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Change your height or weight to see how your BMI changes.
Understanding Your BMI
A BMI of 30 or above indicates obesity. The CDC reports that this range is associated with a 50-60% higher risk of cardiovascular disease and type 2 diabetes. Comprehensive lifestyle intervention and medical guidance are strongly recommended.
What This Means for Your Height
For men of average height, BMI is a reliable screening tool. The CDC recommends keeping waist circumference below 40 inches to minimize health risks.
Weight & Threshold
Losing approximately 3.1 lbs would bring your BMI to 40, the boundary of the healthy weight range.
⬇️ Losing approximately 65.1 lbs would bring you to the Overweight BMI threshold.
Waist & Health
The CDC recommends that men keep waist circumference below 40 inches. A waist-to-height ratio below 0.5 is also associated with lower health risks.
Age Context
For adults in early to middle adulthood (20-44), BMI is a reliable screening tool. At 41 years old, a man at 5ft 6in and 251lbs has a BMI of 40.5, which falls into the Obese category according to CDC and WHO standards.
Your BMI falls into the obesity category. Comprehensive lifestyle intervention and medical guidance are strongly recommended.
👉 Check your Healthy Weight Range for more context.
👉 Measure your Body Fat Percentage for a more complete picture.
Health Analysis
Recommendations
General Health
A BMI of 40.5 is in the obesity range defined by the CDC and WHO. This range is associated with a higher risk of cardiovascular disease and type 2 diabetes. Comprehensive lifestyle intervention and medical guidance are strongly recommended.
Monitoring
In addition to BMI, pay attention to waist circumference. The CDC recommends males stay under 40 inches. Regular tracking of your measurements over time provides the most useful insight into your health trends.
Next Steps
If you're concerned about your weight or body composition, a healthcare provider can offer personalized guidance based on your full health profile.
Personalized Notes
Health Risks
With a BMI of 40.5 for a 5ft 6in man, the obesity range is associated with a 40-50% higher risk of cardiovascular disease and type 2 diabetes. Comprehensive lifestyle intervention and medical guidance are strongly recommended.
Diet & Nutrition
At 5ft 6in and 251lbs, a BMI of 40.5 falls into the obesity category for men. Working with a registered dietitian to develop a structured, sustainable eating plan is recommended.
Frequently Asked Questions
How do I calculate my BMI at 5ft 6in and 251lbs?
Am I at a healthy weight at 5ft 6in and 251lbs?
How does a BMI of 40.5 affect health for a 5ft 6in man?
What percentage of men have a BMI of 40.5 at 5ft 6in?
Related Tools & Articles
💡 About this calculation: BMI = (251 × 703) ÷ (66 × 66) = 40.5 | Metric: 167.6 cm, 113.9 kg
📖 Recommended reading:
Editorial Review: This page was generated by the BMI Calculator Web Editorial Team and reviewed at template and content-pool level for accuracy and guideline alignment by Dr. Sarah K. Johnson, PhD, RD. All content is aligned with current WHO, CDC, and NIH guidelines.
Published: 2026-08-09