BMI does not distinguish fat from muscle or determine one person’s health. The adult categories are not child or pregnancy targets. A clinician can interpret weight alongside medical history and other measurements; the equation does not assign an age-specific goal.
Enter adult height in feet and inches, without shoes. This reverse BMI calculation displays weights at BMI 18.5 and 24.9; CDC adult categories apply at age 20 and older. The full healthy-category upper boundary is BMI below 25, not an inclusive 24.9 limit.
This is a screening reference, not a personal target.
Healthy Weight Range: formula
Healthy Weight Range: worked example
| Height (feet) | 5 |
|---|---|
| Height (extra inches) | 7 |
| Lower end (BMI 18.5), lb | 118.1 |
| Upper end (BMI 24.9), lb | 159 |
Common error: Picking the low end as a goal. A weight at the bottom of the band is not automatically healthier, and for many people with muscle it is not reachable or advisable.
Healthy Weight Range: changing Height (feet)
| Height (feet) | Lower end (BMI 18.5), lb | Upper end (BMI 24.9), lb |
|---|---|---|
| 3 | 48.7 | 65.5 |
| 4 | 79.6 | 107.1 |
| 5 (example) | 118.1 | 159 |
| 6 | 164.2 | 221.1 |
| 7 | 217.9 | 293.3 |
Healthy Weight Range: compare input ranges
| Input | Tested from | To | Lower end (BMI 18.5), lb: low input | Lower end (BMI 18.5), lb: high input | Swing |
|---|---|---|---|---|---|
| Height (feet) | 4 | 6 | 79.6 | 164.2 | 84.6 (72%) |
| Height (extra inches) | 5 | 9 | 111.2 | 125.3 | 14.1 (12%) |
Healthy Weight Range: individual input comparisons
| Input | Value | Lower end (BMI 18.5), lb | Upper end (BMI 24.9), lb |
|---|---|---|---|
| Height (feet) | 3 | 48.7 | 65.5 |
| 4 | 79.6 | 107.1 | |
| 5 | 118.1 | 159 | |
| 6 | 164.2 | 221.1 | |
| 7 | 217.9 | 293.3 | |
| Height (extra inches) | 3 | 104.4 | 140.6 |
| 5 | 111.2 | 149.6 | |
| 7 | 118.1 | 159 | |
| 9 | 125.3 | 168.6 | |
| 11 | 132.7 | 178.6 |
Healthy Weight Range: combined input changes
| Height (feet) / Height (extra inches) | 3 | 7 | 11 |
|---|---|---|---|
| 3 | 40 | 48.7 | 58.1 |
| 4 | 68.4 | 79.6 | 91.6 |
| 5 | 104.4 | 118.1 | 132.7 |
| 6 | 148 | 164.2 | 181.3 |
| 7 | 199.2 | 217.9 | 237.5 |
Healthy Weight Range: which assumptions move the result?
Healthy Weight Range: values and definitions
| Quantity and definition | Value used |
|---|---|
| Height (feet) — The feet part of your height. | 5 |
| Height (extra inches) — The inches part of your height, added to the feet. | 7 |
| Lower end (BMI 18.5), lb | 118.1 |
| Upper end (BMI 24.9), lb | 159 |
Healthy Weight Range: half and double Height (feet)
| Height (feet) | Lower end (BMI 18.5), lb |
|---|---|
| 2.5 | 36 |
| 5 | 118.1 |
| 10 | 424.4 |
Body Composition calculators: Weight to Reach a Target BMI Calculator, BMI Calculator, Body Fat Percentage Calculator, Ideal Weight Calculator, Lean Body Mass Calculator, Waist-to-Hip Ratio Calculator.
BMI turns height into a band of weights, not a single target. The formula does not distinguish muscle from fat or measure fat distribution, so equal height and BMI do not establish equal health.
Compare your own weight to the band, then read it next to waist size and a clinician's view. BMI alone is a screen.
Check your current BMI on the BMI calculator, and the distance to a target on the weight to target BMI page. The ideal weight calculator gives one reference value, and the body fat and waist-to-hip pages add composition. The calorie goal page helps plan a change.
Is 24.9 the exact upper category boundary?
CDC defines the adult category as BMI 18.5 to less than 25. The displayed 24.9 endpoint is a one-decimal reference.
Does the lowest displayed weight make the best goal?
No. These are weights associated with selected BMI values, not personalized recommendations. The endpoints come from the selected BMI boundaries; they do not incorporate the person's full health history or body composition.
How is a healthy weight range calculated?
By finding the weights at your height that give a BMI between 18.5 and 24.9, the range considered healthy for most adults.
Do I need to be inside the range to be healthy?
Not necessarily. Muscle, age and fitness matter, and some people are healthy slightly outside it, so consider other measures too.
Does the range change with age?
The formula itself does not change with age, but many clinicians consider slightly higher weights acceptable and even protective for older adults.