How is ideal weight calculated?

We use the Devine formula based on height in inches: men 50 + 2.3 × (height in inches − 60) kg, women 45.5 + 2.3 × (height in inches − 60) kg, then show a +/-10% healthy range.

Is there one perfect weight?

No. A healthy weight is a range that depends on body composition, frame size and muscle mass. Use these numbers as a general guide, not a prescription.

Yes — it runs entirely in your browser and sends nothing to a server.

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Ideal Weight Calculator

Estimate a healthy body weight range for your height, in both kilograms and pounds.

Gender

Height

What is an ideal weight calculator?

An ideal weight calculator estimates a healthy body weight for a given height and gender, using equations developed for clinical medicine. This tool uses the Devine formula, originally devised for medication dosing, which sets a base weight at five feet and adds a set amount for every inch of height. The result is presented as a specific weight plus a healthy band around it, so you get a realistic range rather than a single number. The estimated ideal weight is a convenient reference: it usually sits inside the healthy BMI category of around 18.5 to 24.9, which is associated with good long-term health. But it is not a target to chase. The formula takes only height and sex into account, so it says nothing about muscle mass, bone density, frame size or age, which is why a fit, muscular person can sit above an estimated range and still be very healthy. Use this as a general reference point alongside other measures.

Example

Select Male and enter a height of 170 cm. The tool returns an ideal weight of about 65.9 kg (around 145 lb), with a healthy range of about 59.3 – 72.5 kg — the estimate plus or minus 10%.

Who is this ideal weight calculator for?

This ideal weight calculator estimates an ideal body weight and range from your height using the Devine formula. It is a general reference used in fitness and healthcare settings, not a diagnosis.

Men: Men can use an ideal weight calculator for men to get a reference weight for a given height. The result is one benchmark, not a target to pursue without context.
Women: Women use an ideal weight calculator for women the same way, noting that the Devine formula applies a different base value for women.
Seniors: Seniors may treat an ideal weight calculator for seniors with more caution, because the formula is a flat height-based estimate and does not reflect age-related changes in body composition.
Teens: Teens should view an ideal weight calculator for teens as a loose reference only — growth-stage charts are more appropriate than adult formulas during development.

Ideal weight chart and table — Devine formula by height

Example ideal weights and ranges from the Devine formula (ideal × 0.9 to ideal × 1.1). These are general height-based references, not a health assessment.

Height	Men (ideal)	Women (ideal)
160 cm	56.9 kg	52.4 kg
165 cm	61.4 kg	56.9 kg
170 cm	65.9 kg	61.4 kg
175 cm	70.5 kg	66.0 kg
180 cm	75.0 kg	70.5 kg

Common use cases

Checking whether your current weight sits within the healthy band for your height.
Setting a sensible reference weight when you begin a weight-management plan.
Using a clinical reference for adjusting medication or supplement doses.
Getting a quick general indicator of whether your weight is in a healthy range.

Pro tips

Treat the range, not the single number, as your reliable reference point.
Remember the formula ignores muscle mass, so athletes and very muscular people can be healthy above the range.
Pair this with BMI and body composition for a fuller picture.
Re-check periodically, since what is ideal depends on your own build and goals.

How to use this ideal weight calculator

Select your gender.
Enter your height in centimetres (we also accept feet/inches typed as, e.g. 175 cm).
Click Calculate ideal weight to see your Devine ideal weight and a healthy ±10% range.

How ideal weight is calculated

Men: 50 + 2.3 × (height in inches − 60) kg
Women: 45.5 + 2.3 × (height in inches − 60) kg

First convert height from centimetres to inches (1 inch = 2.54 cm), then apply the Devine formula. Results are shown in kilograms and pounds; the healthy range is approximately ±10% of the Devine value.

FAQ

What does "ideal weight" mean?

It is a general estimate derived from formulas like Devine, Robinson and Miller, based on height and gender. It is a guide, not a medical target.

Why is there a range?

Healthy weight varies by body composition and frame size, so we show a ±10% range around the formula value rather than a single number.

Is it private?

Yes — it runs entirely in your browser.

What is ideal body weight?

It is an estimated weight range considered appropriate for a given height and sex, based on population-level health research. It is a reference, not a medical diagnosis.

Which formula does this use?

The Devine formula, which sets a base weight for five feet in height and adds a fixed amount per extra inch, different for men and women.

Why do different formulas give different results?

Each formula was developed for different populations and clinical purposes, so they use different base weights and increments. They can vary by a few kilograms.

Is the ideal weight a target I must reach?

No. It is a rough reference point. Muscle mass, frame size and age all matter more than one number.

How is the healthy range computed?

The range is the estimate plus or minus around 10%, reflecting natural variation in frame and lean mass.

Does it account for muscle or body composition?

No. The formula only uses height and sex, so it cannot reflect body composition.

Should I use this or BMI?

Use both. This gives a weight for your height; BMI gives a category. The two usually agree, but can differ for tall, muscular or older adults.