Your Body Composition Toolkit
Six free calculators designed by an exercise physiologist. Every calculation runs in your browser — your data never leaves your device.
Browse All Tools
Six free calculators designed by an exercise physiologist. Every calculation runs in your browser — your data never leaves your device.
Browse All Tools
Navy method, YMCA method, 3-site/7-site skinfold with Jackson-Pollock equations. Age/sex/ethnicity adjustments.
Side-by-side health risk interpretation. Detects BMI false positives for athletes and "normal weight obesity" flags.
Calculate lean mass from weight and BF%. Bone mass estimate, organ mass reference ranges, residual mass breakdown.
Site selection guide, measurement log with mm trend chart, technician error warnings. LocalStorage saves your history.
Hydration status impact, electrode placement, consumer scale vs professional device accuracy, morning vs evening variance.
Bulk rate (+0.25-0.5% body weight/week), cut rate (-0.5-1.0%), maintenance calories, protein target, timeline to goal BF%.
Marcus walked into our Portland studio last March looking defeated. He had been bulking for six months, eating in a slight surplus, lifting four days ...
I stepped on my bioimpedance scale on August 1st and nearly fell off. The app told me my body fat percentage had dropped from 24.3% to 19.8% overnight...
The chart on the wall at my first gym job showed women at 20% body fat as
Have you ever stepped on your scale three mornings in a row and watched your body fat percentage bounce from 22% to 19% to 25% without changing a sing...
I stepped onto the body composition analyzer at my old gym on Burnside last Tuesday, mostly out of boredom while waiting for Alex to finish their dead...
Title: The Body Fat Test I Do Every Morning (And Why You Probably Shouldn't) Slug: dexa-scan-morning-routine-portland Date: 2026-08-01 Domain: bodycom...