Relative Fat Mass (RFM) Calculator

Use the Relative Fat Mass (RFM) Calculator to estimate your body fat percentage based on height and waist circumference.

This calculator is designed to help you estimate your body fat percentage using the Relative Fat Mass (RFM) formula. It is an ideal tool for health and fitness enthusiasts seeking insights into their body metrics.

Results

Relative Fat Mass: -

Data Source and Methodology

All calculations are based on the formula established by the scientific community. For more information, please refer to the RFM Calculation Methodology. All calculations strictly adhere to this source.

The Formula Explained

For men: RFM = 64 - (20 × height/waist)

For women: RFM = 76 - (20 × height/waist)

Glossary of Terms

  • Gender: Biological sex used in calculation.
  • Height (cm): Your height in centimeters.
  • Waist Circumference (cm): Measurement around the waist.
  • Relative Fat Mass: Estimated body fat percentage.

How It Works: A Step-by-Step Example

For a male with a height of 170 cm and a waist circumference of 80 cm, the RFM is calculated as:

RFM = 64 - (20 × 170/80) = 21%

Frequently Asked Questions (FAQ)

What is Relative Fat Mass (RFM)?

RFM is a body fat percentage estimate based on height and waist circumference.

How accurate is the RFM calculation?

While RFM provides a good estimate, it should not replace professional medical advice.

Can RFM be used for children?

RFM is primarily designed for adults. Consult a healthcare provider for children's assessments.

What should I do with my RFM results?

Use RFM to monitor body fat changes over time and consult health professionals for personalized advice.

Why are height and waist measurements important?

They are key indicators in the formula to estimate body fat percentage accurately.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
For men: RFM = 64 - (20 × height/waist) For women: RFM = 76 - (20 × height/waist)
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Full original guide (expanded)

Relative Fat Mass (RFM) Calculator

Relative Fat Mass (RFM) Calculator

This calculator is designed to help you estimate your body fat percentage using the Relative Fat Mass (RFM) formula. It is an ideal tool for health and fitness enthusiasts seeking insights into their body metrics.

Results

Relative Fat Mass: -

Data Source and Methodology

All calculations are based on the formula established by the scientific community. For more information, please refer to the RFM Calculation Methodology. All calculations strictly adhere to this source.

The Formula Explained

For men: RFM = 64 - (20 × height/waist)

For women: RFM = 76 - (20 × height/waist)

Glossary of Terms

  • Gender: Biological sex used in calculation.
  • Height (cm): Your height in centimeters.
  • Waist Circumference (cm): Measurement around the waist.
  • Relative Fat Mass: Estimated body fat percentage.

How It Works: A Step-by-Step Example

For a male with a height of 170 cm and a waist circumference of 80 cm, the RFM is calculated as:

RFM = 64 - (20 × 170/80) = 21%

Frequently Asked Questions (FAQ)

What is Relative Fat Mass (RFM)?

RFM is a body fat percentage estimate based on height and waist circumference.

How accurate is the RFM calculation?

While RFM provides a good estimate, it should not replace professional medical advice.

Can RFM be used for children?

RFM is primarily designed for adults. Consult a healthcare provider for children's assessments.

What should I do with my RFM results?

Use RFM to monitor body fat changes over time and consult health professionals for personalized advice.

Why are height and waist measurements important?

They are key indicators in the formula to estimate body fat percentage accurately.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
For men: RFM = 64 - (20 × height/waist) For women: RFM = 76 - (20 × height/waist)
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Relative Fat Mass (RFM) Calculator

This calculator is designed to help you estimate your body fat percentage using the Relative Fat Mass (RFM) formula. It is an ideal tool for health and fitness enthusiasts seeking insights into their body metrics.

Results

Relative Fat Mass: -

Data Source and Methodology

All calculations are based on the formula established by the scientific community. For more information, please refer to the RFM Calculation Methodology. All calculations strictly adhere to this source.

The Formula Explained

For men: RFM = 64 - (20 × height/waist)

For women: RFM = 76 - (20 × height/waist)

Glossary of Terms

  • Gender: Biological sex used in calculation.
  • Height (cm): Your height in centimeters.
  • Waist Circumference (cm): Measurement around the waist.
  • Relative Fat Mass: Estimated body fat percentage.

How It Works: A Step-by-Step Example

For a male with a height of 170 cm and a waist circumference of 80 cm, the RFM is calculated as:

RFM = 64 - (20 × 170/80) = 21%

Frequently Asked Questions (FAQ)

What is Relative Fat Mass (RFM)?

RFM is a body fat percentage estimate based on height and waist circumference.

How accurate is the RFM calculation?

While RFM provides a good estimate, it should not replace professional medical advice.

Can RFM be used for children?

RFM is primarily designed for adults. Consult a healthcare provider for children's assessments.

What should I do with my RFM results?

Use RFM to monitor body fat changes over time and consult health professionals for personalized advice.

Why are height and waist measurements important?

They are key indicators in the formula to estimate body fat percentage accurately.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
For men: RFM = 64 - (20 × height/waist) For women: RFM = 76 - (20 × height/waist)
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).