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Healthy Weight Calculator

Find a healthy body-weight range for your height from adult BMI categories, in US or metric units. Most useful for adults 18 and older.

US Units

ExampleSample values — edit any field to see your result.

ft
in

Results update as you type.

Healthy weight range

129 – 174 lb

Estimated result

Healthy BMI range
18.5 – 25 kg/m²

Weight by BMI category

CategoryBMIWeight
Underweightbelow 18.5below 129 lb
Healthy weight18.5 – 25129 – 174 lb
Overweight25 – 30174 – 209 lb
Obesity class I30 – 35209 – 244 lb
Obesity class II35 – 40244 – 279 lb
Obesity class III40 and above279 lb and above

Weight at BMI cutoffs

BMIWeight
16.5115 lb
18.5129 lb
25174 lb
30209 lb
35244 lb
40279 lb
Healthy weight range129 – 174 lb

This calculator estimates a healthy body-weight range from your height using adult BMI categories. Enter height in US or metric units to see the 18.5–25 kg/m² band in pounds or kilograms, plus weight ranges for the other BMI categories. It is most useful for adults 18 and older.

Formula

A healthy weight here is the weight that corresponds to a BMI of 18.5 to 25 at your height. Rearrange BMI = weight / height²:

weight (kg) = BMI × height (m)²

US results convert kilograms to pounds (1 lb = 0.45359237 kg) and round to the nearest pound. Metric results keep one decimal place.

The same inversion at BMI 16.5, 18.5, 25, 30, 35, and 40 builds the cutoff scale shown next to the result — the same ticks calculator.net places on its color bar.

BMI does not measure body composition. People with more muscle or a larger frame often weigh more than this range and can still be healthy. A clinician can help interpret the numbers for you.

Adult BMI weight categories

CategoryBMI (kg/m²)
UnderweightBelow 18.5
Healthy weight18.5 – 25
Overweight25 – 30
Obesity class I30 – 35
Obesity class II35 – 40
Obesity class III40 and above

These bands are a screening tool. Being outside a band is a prompt to look closer — with food quality, activity, sleep, and medical care — not a label.

Examples

5 ft 10 in (US units)

At 5 ft 10 in (70 in, 1.778 m), BMI 18.5 is about 129 lb and BMI 25 is about 174 lb. The healthy weight range is 129 – 174 lb. Other rounded cutoffs on the scale are 115, 209, 244, and 279 lb.

180 cm (metric)

At 180 cm, BMI 18.5 is 59.9 kg and BMI 25 is 81.0 kg. The healthy weight range is 59.9 – 81.0 kg, with further cutoffs at 53.5, 97.2, 113.4, and 129.6 kg.

Frequently asked questions

What is a healthy weight range?
For most adults 18 and older, a body mass index (BMI) between 18.5 and 25 kg/m² is the usual healthy or typical-weight band. This calculator turns that BMI band into a weight range for your height. It is a population-level estimate, not a personal diagnosis.
How is the healthy weight range calculated?
Weight equals BMI times height in metres squared. The healthy range uses BMI 18.5 on the low end and BMI 25 on the high end. The category table uses the same idea at the other adult BMI cutoffs (30, 35, and 40).
Why doesn't this ask for my current weight or sex?
Adult BMI categories depend only on height and weight, and the healthy band is the same for men and women. This page answers "what weights sit in the healthy BMI band for this height?" To see where you are today, use the BMI Calculator with your current weight.
Is BMI a good measure of a healthy weight?
BMI is a useful screen for an average adult, but it cannot tell muscle from fat or account for frame size, ethnicity, or medical conditions. Very muscular people often sit above the range and still feel well; others can sit inside it and still need a clinician's advice. Treat the numbers as a starting point.
Does this work for children or teens?
No. These adult BMI cutoffs are meant for people 18 and older. Children and teens are assessed with age- and sex-specific growth-chart percentiles rather than a single healthy-weight band.

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