Reference Guide

BMI Chart – See Your Healthy Weight Category

Use our comprehensive BMI chart to understand where your body mass index falls. Each category carries different health implications and recommended actions.

Visual BMI Scale — Adults (18+)

The bar below shows the full BMI spectrum from underweight to severely obese.

Under

Normal

Over

Obese I

Obese II+

10–18.4 18.5–24.9 25–29.9 30–34.9 35+

BMI Range	Category	Health Risk	Action
Below 18.5	Underweight	Moderate	Increase nutrient-dense caloric intake; seek nutritional guidance.
18.5 – 24.9	Normal Weight	Low	Maintain balanced diet and regular exercise routine.
25.0 – 29.9	Overweight	Elevated	Increase physical activity; review dietary habits.
30.0 – 34.9	Obese Class I	High	Seek medical guidance; structured weight management recommended.
35.0 – 39.9	Obese Class II	Very High	Medical supervision essential; consider clinical support programs.
40.0 and above	Obese Class III	Extremely High	Immediate medical attention advised; specialist referral recommended.

Understanding Each BMI Category

Underweight

BMI below 18.5

Being underweight can indicate malnutrition, anemia, or other underlying health conditions. It is associated with weakened immune function, bone density loss, and fertility issues.

Tip: Focus on calorie-dense, nutrient-rich foods. Consult a registered dietitian for a personalised plan.

Normal Weight

BMI 18.5 – 24.9

A normal BMI is associated with the lowest risk of weight-related health issues. Maintaining this range through balanced nutrition and regular exercise supports long-term health.

Tip: Keep up your balanced habits. Recheck monthly and aim for 150 min/week of moderate exercise.

Overweight

BMI 25 – 29.9

Overweight individuals face elevated risk of heart disease, type 2 diabetes, and high blood pressure. Even modest weight loss of 5–10% can significantly reduce health risks.

Tip: Start with small dietary changes and increase daily activity. Walking 30 min/day makes a real difference.

Obese

BMI 30 and above

Obesity is linked to serious chronic conditions including cardiovascular disease, type 2 diabetes, sleep apnea, and certain cancers. Medical guidance and a structured plan are highly recommended.

Tip: Speak with your doctor or a specialist. Lifestyle programs combining nutrition and exercise show strong results.

How to Read the Chart

Calculate your BMI

Use our free BMI calculator to get your current BMI score.

Find your range

Look up your number in the table above to identify your category.

Read the recommendation

Each category comes with an action step and health risk level.

Track over time

Revisit monthly to watch trends as you adjust your lifestyle.

BMI Limitations

BMI is a valuable screening tool but does not directly measure body fat. Keep these limitations in mind:

→Athletes may have high BMI due to muscle mass, not excess fat.
→Older adults may have a "normal" BMI but excess body fat.
→BMI doesn't account for where fat is stored (e.g. waist vs hips).
→Children and teens use age-and-sex-specific BMI percentile charts.