Calculating your target weight is straightforward once you know the Target Weight formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Target Weight Calculator.
What is Target Weight?
The Target Weight calculation tells you your target weight from a few simple inputs. The figure you are solving for here is the target weight.
The Target Weight formula
The core formula is:
Target weight = Target BMI × ((Height ÷ 100) ^ 2)Here is what each input means:
- Height — a value measured in cm. Example: 170 cm.
- Target BMI — a number. Example: 22.
How to calculate it step by step
- Write down the height (for example, 170 cm).
- Write down the target bmi (for example, 22).
- Apply the formula above to get your target weight.
- Double-check the result with the Target Weight Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Height | 170 cm |
| Target BMI | 22 |
| Target weight | 63.6 |
| Healthy range – lower (BMI 18.5) | 53.5 |
| Healthy range – upper (BMI 25) | 72.3 |
With height of 170 cm and target bmi of 22, the target weight works out to 63.6.
Example 2
With height of 340 cm and target bmi of 22, the target weight works out to 254.3.
| Result | Value |
|---|---|
| Target weight | 254.3 |
| Healthy range – lower (BMI 18.5) | 213.9 |
| Healthy range – upper (BMI 25) | 289.0 |
Example 3
With height of 85 cm and target bmi of 22, the target weight works out to 15.9.
| Result | Value |
|---|---|
| Target weight | 15.9 |
| Healthy range – lower (BMI 18.5) | 13.4 |
| Healthy range – upper (BMI 25) | 18.1 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
- These figures are general estimates, not medical advice — check with a qualified professional before acting on them.
Prefer not to do the maths by hand? — the Target Weight Calculator does it instantly, for free, with the formula and a worked example built in.
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