Lean Body Mass Calculator UK: Free, Step by Step

Published 6 November 2026 by Kloora Tools

Quick answer: Lean Body Mass Calculator: Estimate lean body mass and fat mass from height, weight and sex with the Boer formula. Everything runs in your browser, so nothing you enter is uploaded or stored.

People search for this in many ways: "lean body mass calculator", "lean body mass calculator with body fat percentage", "lean body mass calculator result", "lean body mass calculator free". They all lead to the same job, and the Lean Body Mass Calculator on Kloora Tools does it for free, with no signup, on a phone or a computer.

How to use the Lean Body Mass Calculator

  1. Enter your values in the fields.
  2. The results update instantly as you type.
  3. Note or copy the numbers you need.

Open the Lean Body Mass Calculator in a new tab and keep this page beside it.

Questions people ask

Is the Lean Body Mass Calculator free?

Yes. It is free, needs no signup and works on any device.

Related searches for these answers include "how can i figure out my lean body mass".

Free and online versions

Related searches here include "lean body mass calculator free", "online lean body mass calculator". The Lean Body Mass Calculator is free and runs in your browser. Instant results. Free, no signup.

More related searches

What you get

Try it now

Open the free Lean Body Mass Calculator. You can also browse the Kloora Tools home page or the related guides below.

Try it now: Lean Body Mass Calculator. Estimate lean body mass and fat mass from height, weight and sex with the Boer formula.

Frequently asked questions

Which formula is used?

The Boer formula: men 0.407 x weight + 0.267 x height - 19.2, women 0.252 x weight + 0.473 x height - 48.3 (kg and cm).

Is it exact?

It is an estimate. A DEXA scan or skinfold test is more accurate.

Is the Lean Body Mass Calculator free?

Yes. It is free, needs no signup and works on any device.

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