BMI Result: 6ft 8in, 118 lbs (BMI 13.0) - Male
According to CDC and WHO standards, a BMI of 13.0 is classified as Underweight.
A male who is 6ft 8in tall and weighs 118lbs has a BMI of 13.0, which falls into the Underweight category used by the CDC and WHO for adults.
| Category | BMI Range |
|---|---|
| Underweight | < 18.5 |
| Underweight | < 18.5 |
| Obese | ≥ 30 |
Healthy weight range for 6ft 8in: 168 lbs – 227 lbs
Metric: 203.2 cm, 53.5 kg
📏 Healthy waist circumference for your height: 35" – 40" (below 40" for male)
So you're 6ft 8in and weigh 118lbs. Your BMI is 13.0, which falls into the Underweight 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 below 18.5 may indicate nutritional insufficiency. According to the CDC, this range is associated with increased risk of bone density loss and immune function decline. Consulting a healthcare provider is recommended for a thorough nutritional assessment.
What This Means for Your Height
For men over 6ft, BMI may overestimate body fat due to higher muscle mass. Consider waist circumference and body fat percentage for a more accurate assessment.
Weight & Threshold
Gaining approximately 50.1 lbs would bring your BMI to 18.5, the start of the next category.
⬆️ Gaining approximately 50.1 lbs would put you in the Normal BMI range.
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 39 years old, a man at 6ft 8in and 118lbs has a BMI of 13.0, which falls into the Underweight category according to CDC and WHO standards.
Your BMI is below the healthy range. Consider consulting a healthcare provider for a nutritional assessment.
👉 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 13.0 is below the CDC and WHO healthy range of 18.5-24.9. This may indicate nutritional insufficiency. Consulting a healthcare provider is recommended for a thorough nutritional assessment.
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
Diet & Nutrition
At 6ft 8in and 118lbs, a BMI of 13.0 indicates underweight. For men of this height, the CDC recommends a healthy weight range of 168-226lbs. Focus on protein-rich foods and resistance training to build muscle mass.
Goals
For a man at 6ft 8in, the CDC recommends a healthy weight range of 168-226lbs. At 118lbs, you're below this range. Consider setting a goal to gain 5-10% of your current weight over the next 3-6 months.
Frequently Asked Questions
What health risks are associated with a BMI of 13.0 for a 6ft 8in man?
How can a 6ft 8in man maintain a healthy weight?
Am I at a healthy weight at 6ft 8in and 118lbs?
How common is a BMI of 13.0 for a 6ft 8in man?
Related Tools & Articles
💡 About this calculation: BMI = (118 × 703) ÷ (80 × 80) = 13.0 | Metric: 203.2 cm, 53.5 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: 2026-10-23