analyticsScience-Backed Calculator

Lean Body Mass Calculator

Estimate lean mass and fat mass using the Boer equation.

verified

Clinical Accuracy

Grade A

Your Measurements

kg
cm

Body Composition

78.1%
21.9%
Lean Mass
Fat Mass

Lean Body Mass

54.7 kg

78.1% of body weight

Fat Mass

15.3 kg

21.9% of body weight

Lean Body Mass (Boer)

54.7kg

Estimated fat mass: 15.3 kg

Lean mass as % of total weight

Total Weight

70 kg

Height

170 cm

Lean Mass

54.7 kg

Fat Mass

15.3 kg

Boer Equation (1984)

Male: LBM = 0.407 × W + 0.267 × H − 19.2
Female: LBM = 0.252 × W + 0.473 × H − 48.3
(W = kg, H = cm)

Related Tools

3 tools
monitor_weight

Body Fat Percentage Calculator

Estimate body fat percentage using Deurenberg age-sex adjusted BMI formula.

arrow_forward
monitor_weight

FFMI Calculator

Calculate fat-free mass index and normalized FFMI.

arrow_forward
monitor_weight

BMI Calculator

Calculate BMI with WHO Asia-Pacific cutoffs tailored for Indian users.

arrow_forward
support_agentFREE Coach Support

Get a Personalised Plan

Share your number and goal. We'll tailor a coach-supported next step for you.

🧑
👩
🧔
👩‍🦱

1,200+ users coached this month

Loading the form…

Research Reference

biotechScientific Method

Boer equation predicts lean mass from body weight, height, and sex.

Boer P. (1984)

Am J Physiol.

PMID: 6742781Read paperopen_in_new
Medical Disclaimer: Lean body mass estimates are derived from population-based equations and may vary from direct measurements. This tool is for informational purposes only. Consult a healthcare or fitness professional before making significant changes to your training or nutrition plan.