Fat Tools
Army Body Fat Calculator
Estimate body fat % using the US Army tape method.
BAI Calculator
Estimate body adiposity from hip circumference and height.
Body Fat Calculator
Estimate body fat % from measurements and formulas.
Body Fat Estimator
Estimate your body fat % from a photo.
Body Visualizer
Visualize body shape from BMI, body fat %, height, and weight.
BRI Calculator
Estimate body roundness from waist and height.
RFM Calculator
Estimate body fat from height and waist.
Skinfold Body Fat Calculator
Estimate body fat % from 3-site skinfold caliper measurements.
Visceral Fat Calculator
Estimate visceral fat area from body measurements.
How To Use Fat Tools Effectively
This category currently includes 9 tools. Choose one baseline tool first, then add one or two supporting tools for cross-checking.
Body fat tools are strongest when used as a system, not in isolation. This category lets you compare visual, tape-based, and formula-style estimates so you can track trend direction with better context.
Because different methods rely on different inputs, disagreement is normal. The goal is consistency and decision quality over time, not chasing a single perfect percentage.
What This Category Is Best For
- Baseline screening: Use Body Fat Calculator for a quick, repeatable starting estimate.
- Method comparison: Compare Army and Skinfold approaches when you have those measurements.
- Visual context: Use Body Visualizer and related tools to connect numbers to appearance.
Input Quality Checklist
- Use the same tape placement protocol each time.
- Measure under similar hydration and timing conditions.
- Track method used with each entry to avoid mixed-baseline confusion.
Interpretation Notes
- Compare your trend within one method first.
- Use cross-method checks for context, not exact agreement.
- Evaluate change windows over weeks, not day-to-day noise.
Common Mistakes To Avoid
- Switching methods every check-in and interpreting noise as progress.
- Ignoring measurement protocol differences (waist placement, tension).
- Overreacting to one-off estimates without trend confirmation.
Related Reading
Recommended Starting Tool: Body Fat Calculator
Start with the broad baseline tool, then compare with method-specific calculators as needed.