AjBW - Adjusted Body Weight Calculator Explained

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Last updated: January 12, 2024

AjBW – Adjusted Body Weight Calculator

What is an adjusted body weight calculator?

The adjusted body weight (AjBW) calculator is a simple tool for estimating the adjusted body weight for overweight or obese individuals based on gender, height, and weight.

What is adjusted body weight?

Adjusted Body Weight (AjBW) is used in clinical practice, especially by dietitians and healthcare professionals, to calculate a person's nutritional needs. It is precious when dealing with patients who are overweight or obese.

Adjusted Body Weight (AjBW) is a modification of a person's actual body weight, which accounts for the differences in metabolic activity between adipose tissue (fat) and lean tissue (muscle). When calculating energy requirements, actual body weight may lead to overestimations[1], especially for individuals above their healthy Body Mass Index (BMI). Therefore, as a recommendation, AjBW is an alternative to body weight in certain situations.

We strive to make our calculator apps as accurate as possible, but they cannot replace a professional doctor. Our website provides information for informational purposes, and it's not medical advice. Please consult your healthcare provider before making any decisions based on the results provided by our tool.

User Guide

This guide provides step-by-step instructions for using our calculator.

AjBW – Adjusted Body Weight Calculator

How do you use the adjusted body weight calculator?

To find an adjusted body weight using our calculator, use the following steps:

  1. Check your preferred unit system.
  2. Choose your gender.
  3. Enter your height.
  4. Enter your current actual body weight.

Check unit system and input your gender, height, and weight.

Check the unit system and input your gender, height, and weight.

When you fill in all the required information, our AjBW calculator will calculate ideal body weight (IBW) and adjusted body weight (AjBW) results. Since there are four different formulas for calculating both results, our calculator will provide a range instead of a single value.

AjBW - Results

To find the result for a specific formula, please check the Formulas section, where we listed all the calculated results for each formula.

AjBW - Results for each formula

Calculation Features

Our calculator has some essential features to help you fill in your information and get the result as quickly as possible.

Type, Click, or Swipe

We developed the calculator to accept all interaction methods to speed up your information-filling process. In most input fields, you don't need to use the keyboard. You can use the mouse or finger to adjust the field value by swiping within a predefined range.

Assisted information-filling

More ways to adjust the value

Some calculators also offer a range of preset values, which you can quickly enter by clicking the associated button.

Preset Values

You can fill the field with preset values.

Metric or Imperial Unit

Each calculator has a unit switcher button right under the form. The calculator switches between the metric and imperial systems when you click or tap on it. All input values are converted to an appropriate target unit (e.g., cm to feet, in).

Health Calculator - Unit System Switcher

Convert values between metric and imperial systems.

Reload the form

Click the refresh icon or button under the form to calculate new information.

Health Calculator - Reload the form


Our calculator provides personalization features, allowing users to customize the user interface to match their preferences.

Change dark mode

By default, our calculator dark mode follows your system's preference. However, you can change it by opening the Settings menu and turning on/off the dark mode switch.

Health Calculator - Change Dark Mode

Open the Settings menu and toggle the dark mode switch.

Change theme color

Our calculator comes with several theme colors to match your preferences. You can change them by opening the Settings > Theme menu and selecting your favorite color.

Health Calculator - Change Theme Color

Open the Settings menu, open the Theme menu, and select a color.

AjBW – Adjusted Body Weight Calculator

AjBW – Adjusted Body Weight Calculator App

About this app

Our Adjusted Body Weight (AjBW) calculator is a tool that helps you calculate your healthy weight range. Simply input your sex, weight, and height, and it will output your recommended weight range.

App availability

You can use the calculator for free as a PWA web app online or install it locally on any modern operating system, including Android, iOS, Windows 11/10, and macOS.

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1 Source

  1. ⬆️ Jill Balla Kohn. Adjusted or Ideal Body Weight for Nutrition Assessment? Journal of the Academy of Nutrition and Dietetics. 2015;115(4):680-680.