Ideal Weight Calculator

Find your ideal body weight using multiple medical formulas.

Reviewed & verified by Ismail Nemat
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Ideal Weight by Formula

Enter your height and click Calculate.

How the Ideal Weight Calculator Works

Formula or calculation logic

Healthy weight range = BMI range × height (m)^2

Step-by-Step Practical Example

Follow a realistic set of inputs from start to finish to understand what the result means.

Example 1: Ideal weight for an average-height male.

  1. 1.Enter the inputs: Male, height 5'10" (178 cm).
  2. 2.Apply the logic: Apply the formula above to the listed inputs for "Ideal weight for an average-height male".
  3. 3.Read the result: Devine: 165.5 lbs. Robinson: 162 lbs. Hamwi: 166 lbs. BMI 18.5-24.9 range: 129-167 lbs. Reasonable target range: 150-170 lbs.

Example 2: Ideal weight for an average-height female.

  1. 1.Enter the inputs: Female, height 5'5" (165 cm).
  2. 2.Substitute the inputs: Place the listed inputs into the formula above for "Ideal weight for an average-height female".
  3. 3.Read the result: Devine: 122.5 lbs. Robinson: 119 lbs. Miller: 121 lbs. BMI range: 111-144 lbs. Reasonable target range: 115-140 lbs.

Example 3: Tall person — formulas can underestimate.

  1. 1.Enter the inputs: Male, height 6'4" (193 cm).
  2. 2.Verify the calculation: Work through the formula above for "Tall person — formulas can underestimate", then compare the displayed result.
  3. 3.Read the result: Devine: 192.5 lbs. BMI healthy range: 149-194 lbs. For muscular athletes, healthy weight can extend to 210 lbs or higher.

Key Terms & Variable Definitions

  • Height

    Body height used to estimate weight ranges.

  • Sex

    The selected formula or reference range for the estimate.

  • Weight range

    A range rather than a single target, based on the selected method.

Frequently Asked Questions

What is ideal body weight?

Ideal body weight (IBW) is a target weight associated with good health outcomes for a given height. Multiple formulas exist — Devine, Robinson, Miller, and Hamwi are the most used.

Is there one perfect ideal weight formula?

No single formula works for everyone. IBW formulas don't account for muscle mass, frame size, or ethnicity. Use them as a general reference, not a strict target.

How does height affect ideal weight?

Generally, every inch of height above a base height adds 2–5 lbs to the ideal weight estimate, depending on the formula used.

Can I weigh more than my ideal weight and still be healthy?

Yes. Someone with significant muscle mass may exceed ideal weight formulas and still be very healthy. Focus on body composition, energy levels, and medical markers.

Why are men and women's ideal weights different?

Men typically have more lean mass per inch of height. The formulas adjust the baseline weight by sex.

Sources for Ideal Weight Calculator

Official reference links for this calculator page:

Introduction

Having an understanding of your ideal body weight can be beneficial in knowing your health status and thus setting achievable fitness targets. There is no one "right" weight for everyone, but there are medical formulas that can be used in reference to height, gender, etc. to get an idea of what it's probably. These estimates can be used to determine if current weight is in a healthy range, and provide a basis for talking about nutrition, activity, and wellness. The Ideal Weight Calculator is used to calculate your ideal weight using many medical formulas. The calculator doesn't just use one formula, but multiple formulas to provide a better understanding of your healthy weight range. This method can be particularly helpful as the body structure and assumptions used in the formula can yield slightly different estimates.

What is an Ideal Weight Calculator?

An ideal weight calculator is a health website that calculates an individual's ideal weight using medical formulas. These formulas are intended to give reference ranges of weights, mainly as a function of height and, in a few cases, sex. Unlike BMI, which is a ratio of weight/height, ideal weight formulas are designed to assess a weight that may be considered healthy/appropriate for a specific height. The calculator offers estimates based on a number of common formulas, to be compared. Some of the most popular formulas are:

● Devine Formula

● Robinson Formula

● Miller Formula

● Hamwi Formula

There is a slight difference in the assumption used in each of the formulas, which may result in different outcomes. That is why ideal weight is usually shown as a range, rather than a fixed number.

Calculator and weight scale with pencil

Common Medical Formulas Used

The Ideal Weight Calculator uses several established formulas that have been developed and used in medical and health settings.

FormulaPurpose
Devine FormulaOriginally developed for calculating medication dosages based on ideal body weight.
Robinson FormulaProvides a slightly lower weight estimate compared to some other formulas.
Miller FormulaOffers an alternative estimate that adjusts weight calculations differently.
Hamwi FormulaCommonly used as a general guideline for estimating healthy body weight.

Calculator and weight scale on wooden floor

When might you want to use multiple formulas?

Various medical formulas have been generated with different populations and assumptions. Having several formulas available gives a more even estimate and means that you are not solely dependent on one formula. There are several advantages to comparing several formulas, such as:

● More knowledge about what your healthy weight is.

● Refraining from being overly dependent upon a single formula.

● More context to create reasonable health and fitness objectives.

● A better comparison of the ideal weight estimates by various methods.

Using an ideal weight calculator has a number of advantages. There are several benefits to using an ideal weight calculator. Estimates healthy weight ranges using medical formulas. Compares results for more than one formula.

Follow realistic weight management goals.

Supports people in developing an awareness of health markers relating to weight. Can help make the planning of nutrition and fitness plans. Provides an easy-to-use place to begin talking to health care providers.

Problems with Ideal Weight Formulas

Some formulas are better than others, and these can be used as a guideline only, but do not make definite predictions of health. The following are some important limitations: They are not used to measure the percentage of body fat. These do not consider muscle mass. They are not always going to take into account bone density or body frame size. These are not as detailed as full health assessments. They must be considered in conjunction with other aspects of children's health, including BMI, waist circumference, body composition and fitness.

Tips for use of your ideal weight estimate

The estimate is meant to be a general target, not a strict target.

● Look at health, not weight loss.

● Take into account body composition, such as muscle mass and body fat percent.

● Establish attainable and realistic weight targets.

Add the estimate to healthy eating and regular physical activity and medical advice as necessary.

White calculator with tape measure on blue background

Conclusion

An Ideal Weight Calculator can be helpful if you want to find out a healthy range of body weight based on several medical calculations. When applying formulas like Devine, Robinson, Miller, and Hamwi, a comparison of the results can give a general idea of how your ideal weight range may be. Ideal weights should also be considered guidelines and not rules, however. Muscle mass, body composition, age, skeletal structure, and health condition are also significant in identifying what is healthy for the person.

Black calculator with crispbread and tape measure

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