Shape Tools
Ape Index Calculator
Calculate wingspan-to-height ratio and wingspan-height reach difference.
Body Frame Size Calculator
Estimate frame size from height and wrist ratio.
Body Shape Analyzer
Upload a photo and analyze your visual body type.
Body Shape Calculator
Estimate your body-shape category from bust/chest, waist, and hip measurements.
Ideal Waist Size Calculator
Estimate ideal waist-size targets from height and ratio-based planning bands.
Shoulder to Waist Ratio Calculator
Calculate shoulder-to-waist taper ratio from circumference measurements.
Waist to Height Ratio Calculator
Assess waist-to-height ratio against central-fat risk screening thresholds.
Waist to Hip Ratio Calculator
Assess waist-to-hip ratio with sex-specific central-fat risk thresholds.
How To Use Shape Tools Effectively
This category currently includes 8 tools. Choose one baseline tool first, then add one or two supporting tools for cross-checking.
Shape tools focus on body proportions, frame context, and visual structure metrics such as waist-to-height, waist-to-hip, and body-shape classification.
These tools are strongest for trend direction and planning context. Small measurement errors can create meaningful ratio shifts, so consistency is critical.
What This Category Is Best For
- Body-shape classification: Use Body Shape Analyzer and Body Shape Calculator for visual and measurement-based shape context.
- Waist-centered screening: Use Waist-to-Height and Waist-to-Hip for practical central-adiposity proxy checks.
- Proportion planning: Use Shoulder-to-Waist, Ideal Waist, Ape Index, and Frame Size for physique and structure comparisons.
Input Quality Checklist
- Measure waist and hip at the same anatomical landmarks every time.
- Use normal posture and relaxed breathing during circumference capture.
- Repeat each tape measurement 2-3 times and use the average.
Interpretation Notes
- Ratios are best interpreted as ranges, not strict absolutes.
- Track direction over time rather than reacting to one reading.
- Use shape outputs alongside fat and weight trends for better context.
Common Mistakes To Avoid
- Changing measurement landmarks between check-ins.
- Comparing values collected under different posture or tape tension.
- Using one ratio as a complete health or physique assessment.
Recommended Starting Tool: Body Shape Calculator
Start here for a practical baseline, then cross-check with waist-ratio and frame tools.