Precision Physique Tool

Body Proportion Calculator

Calculate your Adonis Index, shoulder-to-waist ratio, waist-to-hip ratio, and practical measurement targets using male or female physique-planning inputs.

Read the Adonis Index Guide Read the Female Proportions Guide

Inputs

Measurement Profile

Mode

Male Female

Units

Inches Centimeters

Core Ratio Inputs

Main Calculation

Adonis Index equals shoulder circumference divided by waist circumference. Height and weight provide profile context only.

Waist-to-hip ratio equals waist circumference divided by hip circumference. Shoulder circumference adds upper-body balance context.

Auto-updates

Height

Profile context only.

Weight

Profile context only.

Waist Circumference

Required for the main ratio.

Shoulder Circumference

Required for shoulder-to-waist scoring.

Hip Circumference

Required for waist-to-hip scoring.

Optional Roadmap Detail Add Supporting Measurements Supporting fields do not change the main ratio. They reveal a fuller roadmap and ranked reference targets below.

Supporting Measurements

Roadmap Detail

These measurements rank the reference targets and help identify which areas may provide the highest visual return.

Calculate to apply

Chest Circumference

Used for torso balance.

Arm Circumference

Used for upper-body refinement.

Neck Circumference

Used for male proportion balance.

Thigh Circumference

Used for lower-body balance.

Calf Circumference

Used for lower-leg balance.

Estimated Body Fat Optional

Used only for additional context.

Enter the core measurements to calculate the primary ratio. Enable supporting measurements when you want ranked targets and a more detailed roadmap.

Outputs

Calculated Proportions

Enter Your Measurements

Add your core measurements to calculate the primary ratio. Enable supporting measurements when you want detailed target comparisons.

Measurement Guide

How to Measure

Shoulders

Measure around the widest part of the shoulders and upper back while keeping the tape level.

Waist

Measure the narrowest relaxed point of the waist, usually above the navel. Do not pull the abdomen inward.

Hips

Measure around the widest point of the glutes and hips with your feet together.

Chest

Measure around the chest at nipple level with arms relaxed and normal breathing.

Arms

Measure the upper arm at its largest point. Use the same flexed or relaxed method each time.

Neck

Measure around the lower neck just above the collarbone without pulling the tape tight.

Thighs

Measure around the largest part of the upper thigh, usually several inches below the hip crease.

Calves

Measure around the largest part of the calf while standing with your weight distributed evenly.

Measurement Comparison

Reference Targets

Measurement	Current	Planning Target	Difference	Priority

Precision Physique Roadmap

Highest-Return Improvement Path

Interpretation

What Your Results Mean

Use Ratios as Planning Tools

Body proportions can help show where visual change may provide the highest return. They do not define health, value, or physical capability. Training history, frame structure, body composition, posture, and measurement accuracy all affect interpretation.

For more context on male shoulder-to-waist proportion, read the Adonis Index guide . For female waist-to-hip ratio and structural balance, read the female body proportions guide .

Connect Proportion to Coaching

A calculator can identify a potential bottleneck. Execution still requires training, nutrition, recovery, and consistent measurement. For structured support, review custom fitness plans , remote coaching , or in-home personal training .

If body composition is the limiting factor, use the Body Composition Estimator and Protein Calculator alongside this tool.