Body Fat Calculator
Estimates the percentage of body weight that is fat, using the Navy method for men and women, and the YMCA formula for men.
Body Fat Calculator gives you a faster way to work through health-related scenarios without rebuilding the same calculation from scratch every time. Start with Gender, Neck Circumference (inches), Waist Circumference (inches), and Hip Circumference (inches) and use the live outputs to estimate Body Fat Percentage (Navy Method) in one pass. This page is built to help you compare scenarios quickly, validate rough assumptions, and move into a related calculator when you need a second angle on the same problem.
Use The Calculator In A Few Steps
Work through the inputs deliberately, then compare outputs instead of relying on a single scenario.
Scenario Checks
Use these examples to verify the behavior of the calculator before you run your own values.
What Users Usually Need Next
Keep the calculator open while you skim these answers so you can test the scenario that matters.
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Related Calculators
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Bone Age Calculator - Greulich & Pyle Method
Estimates a child's skeletal maturity (bone age) based on the Greulich & Pyle atlas, which compares an X-ray of the left hand and wrist to standard images for different ages. This calculator provides an approximation and should be used in conjunction with professional medical evaluation.
Body Surface Area (BSA) Calculator
Estimates the total surface area of a human body using various formulas. Body surface area (BSA) is the measured or calculated surface of a human body. For many clinical purposes, BSA is a better indicator of metabolic mass than body weight because it is less affected by abnormal body fat. BSA is an important factor in many physiological and clinical situations.
Coffee Consumption Health Tracker
This calculator helps analyze your caffeine intake from coffee, assesses potential health impacts, and provides personalized coffee consumption recommendations. It supports different brewing methods.
Breast Cancer Risk Calculator (Gail Model)
Estimates a woman's risk of developing invasive breast cancer over the next 5 years and lifetime. This calculator uses the Gail Model, which considers factors such as age, race, personal history of breast biopsies, family history of breast cancer, and age at first menstrual period and childbirth.
Use the result as an estimate and confirm any medical decisions with a qualified professional.