Body Fat Calculator
MyFatCalc is a free body fat calculator that estimates your body fat percentage and related body composition metrics ...

What Body Fat Calculator does
MyFatCalc is a free online body fat calculator that estimates body fat percentage using four scientifically validated methods: CUN-BAE, U.S. Navy, BMI, and Jackson-Pollock. Users receive their body fat percentage, body fat category, lean mass estimate, and personalized weight goals based on the measurements they provide. The tool is designed to help individuals understand their body composition and track fitness progress over time, offering a comprehensive assessment beyond simple estimation. The site emphasizes privacy by keeping all measurements local to the browser, ensuring inputs are not uploaded or stored on servers. It also allows users to switch between methods and units without losing context, making it adaptable for different tracking preferences.
How to use the MyFatCalc Body Fat Calculator
- 1
Enter your gender (male or female) to select the appropriate calculation formula.
- 2
Input your age, height, and weight using either imperial or metric units.
- 3
Choose a calculation method from the options: CUN-BAE, U.S. Navy, BMI, or Skinfold.
- 4
Provide additional measurements required by the selected method, such as neck and waist circumference for the U.S. Navy method.
- 5
View your body fat percentage, category, lean mass, and personalized weight goals displayed on the results page.
Best for
This tool suits individuals seeking a quick, private body fat estimate using multiple established methods without needing professional equipment or tape measurements, particularly those focused on tracking fitness trends over time.
Limitations
- Accuracy varies by method, with CUN-BAE estimates noted to differ from clinical measurements.
- Results are estimates and should not replace professional medical assessment.
- The tool requires manual input of measurements; automatic data capture is not supported.
Body Fat Calculator FAQ
- How accurate are the body fat percentage estimates from MyFatCalc?
- The estimates are based on scientifically validated formulas and provide a reasonable approximation for tracking fitness trends, though accuracy varies by method and individual factors; clinical methods may yield different results.
- Can I use MyFatCalc without taking body measurements like neck or waist circumference?
- Yes, the CUN-BAE method only requires height, weight, age, and gender for a quick estimate, while other methods like U.S. Navy require additional circumference measurements.
- Does MyFatCalc store my body measurements on its servers?
- No, the site is designed with privacy in mind; all measurements stay in the browser and recent history remains local, with no upload or storage on servers.
- Which body fat calculation method should I choose on MyFatCalc?
- Choose CUN-BAE for quick estimates using only height, weight, age, and gender; U.S. Navy for a tape-measure approach using neck and waist circumference; BMI for a simple height-and-weight ratio; or Skinfold if you have caliper measurements.
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