ProfessionalBody Fat Analysis
Get lab-grade accuracy with 9 scientifically validated methods. Perfect for trainers, athletes, and fitness enthusiasts who demand precision.
"Exactly what I needed!" - Michał
Start for FREEONE TIMEPURCHASEFOR PROFOREVER Yours
Choose Your Perfect Method
From quick estimates to gold-standard measurements, we offer the most comprehensive selection of scientifically validated formulas. Each method is optimized for different needs and equipment availability.
Parrillo
±3-4%Bodybuilding-focused method using nine skinfold sites
Jackson & Pollock 7-Site
±3-4%Most thorough method with seven skinfold measurements
Jackson & Pollock 4-Site
±3.5-4.5%Uses age and four strategic skinfold measurements
Durnin & Womersley
±3.5-5%Scientific method using four skinfold measurements
Jackson & Pollock 3-Site
±4-5%Quick but accurate method using three skinfold sites
Covert Bailey
±4-5%Comprehensive method using multiple body measurements
US Navy
±4-6%Military method using height and circumference measurements
Modified YMCA
±4-6%Enhanced YMCA method with additional measurements for women
YMCA
±5-7%Simple method using weight and waist measurements
Simple and accurate body fat calculations.
Our app focuses on providing accurate body fat measurements using the most reliable caliper-based methods available.
Multiple Measurement Methods
Choose from scientifically validated formulas including Jackson & Pollock (3, 4, 7 sites) and Durnin & Womersley.
Easy to Use
Simple interface that guides you through the measurement process with clear input fields and instant results.
Unit Conversion
Seamlessly switch between metric (millimeters) and imperial (inches) measurements for your convenience.
Free or PRO - Your Choice
Start with our free version or unlock all features with a one-time PRO upgrade and enjoy lifetime access
Free Version
Perfect for casual measurements
Free forever
PRO Version
For professionals and enthusiasts
Frequently asked questions
Have more questions? View all FAQs or contact our support team.
What is body fat percentage?
Body fat percentage is the total mass of fat divided by total body mass. It includes both essential fat (needed for basic bodily functions) and storage fat. This measurement is more meaningful than BMI for assessing body composition.
How accurate are the measurements?
When measurements are done right, you can expect accuracy of ±3-4%. The key is consistent technique and site location. For best results, take measurements in the morning before eating or drinking.
What makes the PRO version special?
PRO unlocks professional skinfold methods, higher accuracy with 2 decimal place precision, and can be shared with up to 5 family members.
Is there a subscription fee?
No! The PRO version is a one-time purchase of £9.99 / $9.99 / €9.99. You get lifetime access to all premium measurement methods and future updates. No hidden fees or subscriptions.
What equipment do I need?
You'll need a body fat caliper (also known as skinfold calipers). We recommend using professional-grade calipers like Harpenden or Lange for best results, though any calipers (like BOZEERA) will work for getting started.
Can I use this professionally with clients?
Yes! The app is suitable for both personal and professional use. The multiple measurement methods and unit conversion features make it a practical tool for trainers working with clients.
Do you offer support?
Yes! We provide support for all users. If you have questions about measurements, formulas, or technical issues, contact us at [email protected].