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What does 100 pounds look like on a woman?
At 5′5″, a typical height for women, 100 lb is a BMI of 16.6, which counts as underweight. On a body like the one below that usually means very slim: visible collarbones, thin arms and legs and a flat stomach. The bottom of the healthy range at this height is about 111 lb, 11 lb heavier.
At 100 lb a 5′5″ frame looks noticeably light: the collarbones and shoulder blades show, the arms and legs are slim from top to bottom, and there is very little padding at the hips. Plenty of naturally small-boned women sit near here, but for most adults this is below the weight their body is built to carry.
Try it with your own height and goalWhat losing weight from 100 lb looks like
The same 5′5″ woman at 100 lb and after losing 10, 20 and 40 pounds. The models change in steps of about 10 lb, so the first step can look small; the difference adds up quickly after that.
BMI 16.6
BMI 15.0
BMI 15.0
BMI 15.0
100 pounds at other heights
The same weight reads very differently depending on height. Here is 100 lb on women from 4′11″ to 5′11″.
| Height | BMI | Category | Healthy range |
|---|---|---|---|
| 4′11″ | 20.2 | a healthy weight | 92–123 lb |
| 5′1″ | 18.9 | a healthy weight | 98–132 lb |
| 5′3″ | 17.7 | underweight | 104–141 lb |
| 5′5″ | 16.6 | underweight | 111–150 lb |
| 5′7″ | 15.7 | underweight | 118–159 lb |
| 5′9″ | 14.8 | underweight | 125–169 lb |
| 5′11″ | 13.9 | underweight | 133–179 lb |
When the goal is to gain
If you are under the healthy range, the useful question is not how to look different but whether you are eating enough to fuel the day. Unplanned weight loss down to this level, or trouble keeping weight on, is worth mentioning to a doctor, because it is often a sign of something else going on rather than a target in itself.
Similar
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What 120 pounds looks like on a woman -
What 140 pounds looks like on a woman -
What 140 pounds looks like on a man - See every weight
→
All weights for a woman
Where to start
- Healthy weight loss tips that work without crash diets
- A simple calorie counting guide
- A 30-day walking routine to start moving
- Meal prep ideas for eating well all week
About these pictures
The first picture is the original 3D body model at this weight. The second is a front view generated by AI from that model's matching step, so the body size follows the original, using this description:
Body size: a woman about 5′5″ tall weighing about 100 lb (BMI about 17), very slim and slightly underweight: visible collarbones, thin arms and legs, flat stomach. No belly: the stomach is flat at this weight.
Sources: BMI categories from the CDC; waist guidance from the NIH (NHLBI); pace of loss from the CDC. How these pages are made.
These pictures are a visualization from a small set of pre-made body models, not a picture of you, and BMI is only a rough screening number: it does not measure body fat, muscle or health. For advice about your own weight, talk to your doctor.