Body Recomposition Calculator

Estimate your daily calorie and macronutrient targets for improving body composition based on your weight, height, age, activity level, and goal.

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What is your sex?

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How old are you?

years
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What is your body weight?

lb
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How tall are you?

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How active are you?

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What is your main goal?

Your Recommended Daily Targets

0 kcal
estimated daily calorie target
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estimated maintenance calories
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daily protein
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Protein
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Fat
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Carbs
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How Does the YMCA Formula Calculate Body Fat?

The YMCA body fat calculator uses a simple estimation method that calculates an estimated body fat percentage from your body weight and waist circumference. The formula uses different constants for men and women.

Input What Is Used? Why Is It Needed?
Sex Male or female The YMCA formula uses a different equation for men and women.
Body weight lb or kg Body weight is one of the core variables used in the body fat estimate.
Waist circumference inches or cm Waist circumference provides a simple measurement of abdominal size that is used alongside body weight.
Estimated body fat Percentage (%) The resulting value represents the estimated proportion of your total body weight that is body fat.

The YMCA Body Fat Formula

The calculator uses the classic YMCA equation. Your body weight and waist circumference are converted to the units required by the formula, and the result is then displayed as a percentage.

Men: ((4.15 × waist circumference in inches) − (0.082 × body weight in pounds) − 98.42) ÷ body weight in pounds × 100 Women: ((4.15 × waist circumference in inches) − (0.082 × body weight in pounds) − 76.76) ÷ body weight in pounds × 100
Important: This Is an Estimate

The YMCA method does not directly measure your body fat. It is a simple anthropometric estimation method, so the result can differ from measurements obtained through methods such as DEXA, hydrostatic weighing, or other validated body composition assessment methods.

Why Can Tracking Body Fat Be Useful?

Body weight alone does not show how your body composition is changing. For example, if you regularly perform resistance training, changes in body weight may not fully reflect changes in muscle mass and body fat. Tracking estimated body fat alongside body weight, waist circumference, and performance can therefore provide a more complete picture of your progress.

Calculator results are for informational purposes only and do not replace medical advice, professional assessment, or a direct body composition measurement.

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Body recomposition calculator: estimate your daily calorie and macronutrient targets if you want to build or maintain muscle while gradually reducing body fat. The calculator uses the Mifflin–St Jeor equation to estimate your energy needs and then calculates protein, fat, and carbohydrate targets based on your body weight.

Medical Disclaimer: The calculator results and information provided in this article are for educational and informational purposes only and do not constitute medical, health, or professional advice. Always consult with a qualified healthcare provider before making any decisions related to your health, diet, or fitness goals. Individual results may vary, and this tool should not be used to diagnose or treat any medical condition.

What Is Body Recomposition?

Body recomposition means gradually reducing body fat while maintaining or increasing muscle mass. Unlike an aggressive weight-loss approach, body recomposition generally focuses on a manageable calorie intake, sufficient protein, and consistent resistance training. How quickly this happens varies considerably between individuals.

How Many Calories Should I Eat for Body Recomposition?

Your calorie needs depend on your individual energy expenditure, body weight, activity level, and goal. This calculator uses the Mifflin–St Jeor equation to estimate resting energy expenditure and then applies an activity factor to estimate total daily energy expenditure. For body recomposition, it uses a modest calorie reduction of approximately 5% as a starting point.

How Much Protein Should I Eat for Body Recomposition?

Adequate protein intake is important for supporting muscle retention and adaptation to resistance training. This calculator uses 2.0 grams of protein per kilogram of body weight, which sits within the commonly used range of approximately 1.6–2.2 g/kg/day. For example, someone weighing 80 kg would have a calculated protein target of approximately 160 grams per day.

Can You Build Muscle and Lose Fat at the Same Time?

Yes, under certain circumstances it is possible to increase or maintain muscle while reducing body fat. This may be particularly achievable for beginners, people returning to training, and individuals carrying more body fat, although results vary from person to person. Adequate protein and progressive resistance training are important parts of the process.

What Type of Training Is Best for Body Recomposition?

Regular resistance training is one of the most important forms of exercise when your goal is to maintain or build muscle. A good training program should consistently challenge your muscles while allowing performance to gradually improve over time. Cardio and daily activity can also help increase energy expenditure, but they do not replace resistance training for muscle development.

How Long Does Body Recomposition Take?

Body recomposition is generally a slower process than simply changing your body weight. It is useful to track more than the number on the scale, including waist measurements, body measurements, progress photos, and performance in the gym. Consistent nutrition and training over several weeks and months provide a much more useful picture than short-term changes over a few days.

GetFIT App: Not Just a Calorie Counter — Your Complete Online Body Transformation Membership for Weight Loss & Muscle Building

Why pay for separate programs, apps and courses for calorie tracking, workouts, and meal plans? GetFIT App is an all-in-one web app membership that gives you everything in one place, fully online. Set up your account in seconds and reach your goals faster, with less hassle.

Feature GetFIT App 🌟 Other Calorie Tracker
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Calorie Tracking Yes Yes
AI Powered Meal Analysis Yes No
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Body Weight Tracking Yes No
Water Intake Tracking Yes No
Body Measurement Tracking Yes No
Knowledge Library & E-books Yes No
Progress Tracking Yes No
Seasonal Winter/Fall Diet Recipes Yes No
Step Count & Daily Habit Tracking Yes No
International Recipe Library Yes No
Diet Shopping Lists Yes No
Supplement Programs Yes No
Easy-to-Use Online Platform Yes No
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If you've ever gotten stuck losing weight, had no idea how many calories or how much protein you actually need, or you're just tired of bland, boring diet food — you're not alone. GetFIT App was built for people who want to finally reach their weight loss or muscle-building goals in one place, with a clear system and food they actually enjoy eating. Look through the situations below, and if you recognize yourself, you'll know exactly what to do next.

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GetFIT App helps you so you don't have to figure out how to reach your goals on your own. In one place, you'll find everything you need for a mindful lifestyle change: calorie and macro tracking, daily calorie logging, 4-week workout plans, delicious and easy-to-follow recipes, and progress tracking. You won't get quick tricks — you'll get a clear, transparent system that helps you move toward your goal more consistently, whether that's weight loss, muscle building, or a fitter, more sustainable lifestyle.

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