Body Fat Calculator (PRO)

Your weight doesn't tell the whole story. Body fat percentage is what actually matters for your health, fitness, and performance — and most body fat calculator apps only give you one rough estimate. Body Fat Calculator gives you 9 research-based formulas to calculate body fat percentage from a tape measure or skinfold caliper — including Bozeera calipers. Cross-reference results from multiple methods to get the most complete picture of your body composition. THREE FREE BODY FAT METHODS * YMCA body fat formula — quick estimate using weight and waist * Modified YMCA — improved body fat percentage accuracy with additional measurements * U.S. Navy body fat method — the same formula used by the military to assess fitness SIX PRO+ BODY FAT FORMULAS * Jackson & Pollock 3-Site, 4-Site, and 7-Site — the industry standard for skinfold body fat testing * Durnin & Womersley — a widely used skinfold method from exercise science research * Covert Bailey — comprehensive body composition method using circumference measurements * Parrillo 9-Site — the most detailed skinfold method, designed for bodybuilders and athletes Every formula is implemented from its published source, and every one has a documented margin of error (±3–7% depending on method and measurement technique). The Jackson & Pollock and Durnin & Womersley methods come from peer-reviewed research; the U.S. Navy method from Naval Health Research Center technical reports; the YMCA methods from standard fitness-testing manuals; and Parrillo and Covert Bailey from published fitness books. TRACK YOUR BODY FAT OVER TIME * Save every body fat measurement to your history * See how your body composition changes over time with progress charts * Attach progress photos to saved measurements * Cloud sync your body fat data across your devices with your own Google Drive HEALTH CONNECT INTEGRATION * Sync body fat percentage, weight, height, and lean body mass with Google Health Connect * Your body composition data flows into your complete health picture automatically MEASUREMENT REMINDERS * Set weekly or monthly body fat measurement reminders * Stay consistent with your body composition tracking BUILT FOR PRIVACY * No account required — your body fat measurements stay on your device * No data sold, no ads, no ad tracking WORKS WITH BOZEERA & OTHER SKINFOLD CALIPERS Works with your Bozeera body fat caliper: enter the skinfold readings and get your body fat percentage with Jackson & Pollock, Durnin & Womersley, or Parrillo. Also compatible with Harpenden, Lange, Slim Guide, Accu-Measure, FatTrack, and Lafayette calipers, and with any body measurement tape. Visual guides show exactly where and how to measure for consistent body fat calculation. Whether you're a personal trainer, athlete, bodybuilder, or just tracking your fitness progress — Body Fat Calculator is a comprehensive body fat percentage calculator built for consistent, repeatable measurements. PRO+ unlocks all 9 formulas, 2-decimal precision, measurement history, progress photos, cloud sync, Health Connect integration, and reminders. Available as a monthly or annual subscription, or as a one-time lifetime purchase. IMPORTANT This app is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Body fat estimates are calculated from the measurements you enter using published formulas, and every method has a documented margin of error. Always consult a healthcare professional for medical advice, diagnosis, or treatment. Download now and calculate your body fat percentage in 30 seconds.