Healthy Weight Range
The normal band runs from BMI 18.5 to 24.9, so multiply your height in metres squared by each number. Healthy weight is a wide band, not a single figure.
Your numbers
Lower healthy weight
52.2kg
Upper healthy weight
70.3kg
BMI
24.8
Difference
0kg
What it means
You are inside the 52.2–70.3 kg band.
Formula
Lower healthy weight = 18.5 × (Height (cm) ÷ 100) ²
Plenty of muscle can push you above the band without any problem. If you fall outside it, look at waist and body fat too.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Height (cm) (cm)Height in centimetres; converted to metres inside the formula. | 168 | 50 and up |
| Weight (kg) (kg)The second weight you are comparing against. | 70 | 1 and up |
Step by step
Quick reference table
Results when only Height (cm) (cm) changes and everything else stays put.
| Height (cm) (cm) | Lower healthy weight (kg) | Upper healthy weight (kg) | BMI |
|---|---|---|---|
| 84 | 13.1 | 17.6 | 99.2 |
| 126 | 29.4 | 39.5 | 44.1 |
| 168 | 52.2 | 70.3 | 24.8 |
| 252 | 117.5 | 158.1 | 11 |
| 336 | 208.9 | 281.1 | 6.2 |
What each result means
| Result | At default values |
|---|---|
| Lower healthy weight (kg)The weight at BMI 18.5; below it counts as underweight. | 52.2 |
| Upper healthy weight (kg)The weight at BMI 24.9; above it counts as overweight. | 70.3 |
| BMIA build index from height and weight alone; it cannot tell muscle from fat. | 24.8 |
| Difference (kg)The gap between two values — a quantity, not a rate. | 0 |
Common mistakes
Plenty of muscle can push you above the band without any problem. If you fall outside it, look at waist and body fat too.
Glossary
- Height (cm)
- Height in centimetres; converted to metres inside the formula.
- Weight (kg)
- The second weight you are comparing against.
- Lower healthy weight
- The weight at BMI 18.5; below it counts as underweight.
- Upper healthy weight
- The weight at BMI 24.9; above it counts as overweight.
- BMI
- A build index from height and weight alone; it cannot tell muscle from fat.
- Difference
- The gap between two values — a quantity, not a rate.
Frequently asked questions
Q. How is Healthy Weight Range calculated?
Lower healthy weight = 18.5 × (Height (cm) ÷ 100) ² — The normal band runs from BMI 18.5 to 24.9, so multiply your height in metres squared by each number. Healthy weight is a wide band, not a single figure.
Q. Can you walk through an example?
With Height (cm) 168cm, Weight (kg) 70kg, the answer is Lower healthy weight 52.2kg.
Q. What do I need to enter?
Enter Height (cm), Weight (kg). The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Height (cm) (cm) moves the answer to Height (cm) (cm) 84 → Lower healthy weight (kg) 13.1 and Height (cm) (cm) 336 → Lower healthy weight (kg) 208.9. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Plenty of muscle can push you above the band without any problem. If you fall outside it, look at waist and body fat too.
Related calculators
These calculators help you understand health figures; they do not replace diagnosis or prescription. See a clinician if you have symptoms.