New Amputee BMI Calculator

LimbPower has been developing an amputee and limb difference specific BMI calculator to help YOU, people with an amputation or limb difference calculate YOUR body mass index (BMI) in a more usable way. This is an amazing step forward in making it possible for people with limb differences to monitor changes in their body composition and consider when they need additional support.

The BMI is a simple ratio measurement based on height and weight, which is used in adult men and women without disabilities to help identify if their weight is in a healthy category.

For people with an amputation or limb difference, the standard BMI calculation does not apply, as the limb difference or absent limb/s are not accounted for.

That's what makes this so fantastic, LimbPower has designed this BMI calculator specifically for amputees and people with limb differences, it will help community members get quicker, easier and more applicable BMI scores. This will allow you to better understand your health status and enable you to manage your weight and prosthetic fit.

LimbPower has tested the calculator on individuals with limb loss and will continue to test it to improve its applicability.


Precisely measuring "full stature" height can pose a challenge for individuals with bilateral lower-limb amputation (especially those who have asked to be taller, Wink)) or those with a congenital limb difference.

If relevant you can:

  • Use your wingspan (measurement from the tip of the left middle finger to the tip of the right middle finger when raised parallel to the ground at shoulder height at a 90-degree angle) which is usually close to your adult "full stature" height.
  • Use your pre-operation height
  • Or refer to your Rehabilitation Consultant who may be able to provide information on an accurate height measurement.

Disclaimer for Amputee BMI Calculator by LimbPower
Please read this disclaimer carefully before using the Amputee BMI Calculator provided by LimbPower. This disclaimer outlines important information about the calculator's purpose, limitations, and intended use. By accessing and using the calculator, you agree to the terms and conditions set forth in this disclaimer.

1. Purpose and Intended Use: The Amputee BMI Calculator is a tool developed by LimbPower for informational purposes only. It is designed to estimate Body Mass Index (BMI) in individuals with amputations and limb difference. The calculator's primary purpose is to provide a general indication of BMI in amputees and individuals with limb differencefor educational and awareness purposes.

2. Limitations: It is important to recognise that the Amputee BMI Calculator has limitations and should not be considered a substitute for professional medical advice, diagnosis, or treatment. Some key limitations include:

a. Accuracy: The calculator uses standard BMI calculations and does not consider individual variations in body composition, muscle mass, or other factors that may affect BMI accuracy in amputees.
b. Medical Assessment: The calculator does not consider specific medical conditions or individual health profiles that may influence a person's health and well-being.
c. Consultation with Healthcare Professionals: For personalised health assessments or medical advice, we strongly recommend consulting with qualified healthcare professionals who can consider your unique circumstances and provide appropriate guidance.

3. User Responsibility: Users of the Amputee BMI Calculator are responsible for understanding the limitations of the tool and using its results as a starting point for discussion with healthcare providers or medical experts. LimbPower assumes no liability for any decisions or actions taken based on the calculator's results.
a. LimbPower advises that those who have a history of eating disorder/s , weight obsession/s or related disorders do not use this calculator unless under medical supervision to do so.
b. It is worth noting that we are all different so the calculations are affected by the length of your residual limb/s.
c. Please note that the BMI calculator cannot account for muscle mass or bone density and is not a direct measure of your body tissue composition.

4. Liability: Please use discretion and common sense in the application of the information provided, in no event shall LimbPower be liable for any special, incidental, indirect or consequential damages of any kind, or any damages whatsoever resulting from use of, or in connection with the use or performance of, this information.

5. Privacy and Data Usage: We respect your privacy and do not collect or store any personal information when you use the Amputee BMI Calculator. Your calculated BMI is for your personal use only and is not shared with any third parties.

6. Changes and Updates: LimbPower reserves the right to make changes or updates to the Amputee BMI Calculator, including its features, algorithms, and disclaimers, without prior notice. Changes to the calculator may be applied periodically based on additional data gathered, we hereby state that neither the BMI Calculator nor LimbPower offers medical advice, please consult your medical professional.

8. Contact Information: If you have any questions or concerns about the Amputee BMI Calculator or this disclaimer, please contact [info@limbpower.com
By using the Amputee BMI Calculator, you acknowledge that you have read and understood this disclaimer and agree to its terms. If you do not agree with any part of this disclaimer, please refrain from using the calculator.

Last updated: 9th October 2023