About the Healthy Weight Calculator

A healthy weight range gives you a target window based on your height, rather than a single number, since a healthy weight can vary between individuals.

Formula Used

Min Weight = 18.5 × [height(m)]² Max Weight = 24.9 × [height(m)]²

How It Works

This calculator computes the weight range corresponding to a BMI of 18.5 to 24.9 for your entered height, which is the WHO-defined normal weight category.

Step by Step

Convert your height to metres and square it.
Multiply by 18.5 to get the lower bound of the healthy range.
Multiply by 24.9 to get the upper bound.

Worked Example

Example: A person 170 cm tall (1.70 m):

Min = 18.5 × 1.70² = 53.5 kg, Max = 24.9 × 1.70² = 71.98 kg

Frequently Asked Questions

Why is there a range instead of one number?

Body composition varies between people of the same height, so a range is more realistic than a single 'ideal' weight.

Is BMI-based range accurate for athletes?

Not always - muscular individuals may fall outside this range while still being healthy, since BMI doesn't distinguish muscle from fat.

Does age affect the healthy weight range?

This calculator uses standard adult BMI cutoffs; healthy ranges for children and teens are assessed differently using growth charts.

CALCULATOR EXPERT

Healthy Weight Calculator