BMI Result: 5ft 11in, 306 lbs (BMI 42.7) - Female
According to CDC and WHO standards, a BMI of 42.7 is classified as Obese.
A female who is 5ft 11in tall and weighs 306lbs has a BMI of 42.7, 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 11in: 133 lbs – 179 lbs
Metric: 180.3 cm, 138.8 kg
📏 Healthy waist circumference for your height: 30" – 35" (below 35" for female)
So you're 5ft 11in and weigh 306lbs. Your BMI is 42.7, which falls into the Obese category according to CDC and WHO standards. Let's break down what this means for your health.
Adjust Your Numbers
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 women of average height, BMI is a reliable screening tool. Pair it with waist circumference for a more complete health picture.
Weight & Threshold
Losing approximately 19.4 lbs would bring your BMI to 40, the boundary of the healthy weight range.
⬇️ Losing approximately 91.1 lbs would bring you to the Overweight BMI threshold.
Waist & Health
The CDC recommends that non-pregnant women keep waist circumference below 35 inches. A waist-to-height ratio below 0.5 is also associated with lower health risks.
Age Context
For adults 65 and older, BMI targets shift. Clinical guidelines (ESPEN, NIH) often recommend a slightly higher BMI range (around 23–26) for seniors to protect against bone loss and muscle decline. At 76 years old, a woman at 5ft 11in and 306lbs has a BMI of 42.7.
Your BMI of 42.7 falls into the Obese category. At age 76, doctors often focus more on mobility, waist size, and functional ability than BMI alone.
👉 Use our Senior BMI Calculator for age-stratified recommendations.
👉 Check our Asian BMI Calculator for ethnicity-specific guidelines (if applicable).
Health Analysis
Recommendations
General Health
A BMI of 42.7 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 females stay under 35 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
Diet & Nutrition
At 5ft 11in and 306lbs, a BMI of 42.7 falls into the obesity category for women. Working with a registered dietitian to create a sustainable meal plan is recommended. Focus on whole, unprocessed foods and gradual changes.
Health Risks
With a BMI of 42.7 for a 5ft 11in woman, the obesity 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.
Frequently Asked Questions
How does a BMI of 42.7 affect health for a 5ft 11in woman?
How common is a BMI of 42.7 for a 5ft 11in woman?
Am I at a healthy weight at 5ft 11in and 306lbs?
How can a 5ft 11in woman maintain a healthy weight?
Related Tools & Articles
💡 About this calculation: BMI = (306 × 703) ÷ (71 × 71) = 42.7 | Metric: 180.3 cm, 138.8 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: 2026-09-04