BMI Result: 6ft 7in, 309 lbs (BMI 34.8) - Female
According to CDC and WHO standards, a BMI of 34.8 is classified as Obese.
A female who is 6ft 7in tall and weighs 309lbs has a BMI of 34.8, 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 6ft 7in: 164 lbs – 221 lbs
Metric: 200.7 cm, 140.2 kg
📏 Healthy waist circumference for your height: 30" – 35" (below 35" for female)
So you're 6ft 7in and weigh 309lbs. Your BMI is 34.8, 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 over 5ft 11in, BMI may slightly underestimate body fat due to higher bone density. Muscle mass is also a factor—consider body fat percentage as a complementary measure.
Weight & Threshold
Gaining approximately 46.2 lbs would bring your BMI to 40, the start of the next category.
⬇️ Losing approximately 42.6 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 66 years old, a woman at 6ft 7in and 309lbs has a BMI of 34.8.
Your BMI of 34.8 falls into the Obese category. At age 66, 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 34.8 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
Health Risks
With a BMI of 34.8 for a 6ft 7in 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.
Monitoring
At 6ft 7in, schedule a comprehensive health checkup with your doctor. For women at this height, the CDC recommends keeping waist circumference below 35 inches. Regular monitoring of blood pressure and blood sugar is also important.
Frequently Asked Questions
Am I at a healthy weight at 6ft 7in and 309lbs?
What health risks are associated with a BMI of 34.8 for a 6ft 7in woman?
What percentage of women have a BMI of 34.8 at 6ft 7in?
What else should I track besides BMI for a 6ft 7in woman?
Related Tools & Articles
💡 About this calculation: BMI = (309 × 703) ÷ (79 × 79) = 34.8 | Metric: 200.7 cm, 140.2 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: 2026-10-22