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At 5'2" and 100 lbs, your BMI is 18.3, placing you in the Underweight category. A BMI of 18.3 falls in the underweight range (below 18.5). This may indicate insufficient body mass for your height. Consulting a healthcare provider is recommended.
18.3
BMI
Underweight
Category
101-136
Healthy range (lbs)
+1 lbs
To healthy low
BMI 18.3: Underweight
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 101 lbs | You are here |
| 18.5 to 24.9 | Normal | 101 to 136 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 137 to 163 lbs | - |
| 30.0+ | Obese | Above 163 lbs | - |
Your BMI of 18.3 puts you in the Underweight category for someone 5'2".
To reach the lower boundary of the healthy range (101 lbs), you would need to gain approximately 1 lbs. A safe rate of weight gain is 0.5 to 1 lb per week through a calorie surplus combined with resistance training to prioritize lean mass.
Keep in mind that BMI does not account for muscle mass. Two people at 5'2" and 100 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
For someone 5'2", the healthy weight range based on BMI is 101 to 136 lbs. At 101 lbs, BMI is 18.5 (lower boundary of healthy). At 136 lbs, BMI is 24.9 (upper boundary of healthy). Below 101 lbs is underweight; above 136 lbs is overweight.
BMI only uses height and weight. Body fat percentage measures actual fat tissue as a proportion of total weight, making it more precise for body composition assessment. Two people with the same BMI of 18.3 can have very different body fat percentages depending on muscle mass. Athletes often have BMI values above 25 while maintaining low body fat. Use body fat percentage to set specific fitness goals.
A BMI of 18.3 at 5'2" places you in the Underweight category. BMI (Body Mass Index) is calculated by dividing weight in pounds by height in inches squared, then multiplying by 703. The healthy range is 18.5 to 24.9, which translates to 101 to 136 lbs for someone 5'2".
At 5'2", a weight of 100 lbs gives a BMI of 18.3, which is in the Underweight category. The healthy weight range for 5'2" is 101 to 136 lbs. This is below the healthy range. Keep in mind BMI does not account for muscle mass or body composition.
To reach low end (101 lbs)
1 lbs to gain
To reach high end (136 lbs)
36 lbs to gain
BMI tells you where you are. FitCommit shows you what to do about it. AI body scanning estimates your body fat percentage and lean mass. Food camera scanning tracks your nutrition automatically. Free 7-day trial.
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