You're loggin in

Jackson-Pollock 7-Site Calculator

Estimate your body-fat percentage from seven skinfold measurements using the established Jackson-Pollock 7-site method, based on your sex, age and total skinfold thickness.

1

Sex

Select the sex used by the Jackson-Pollock equation.
2

Age

years
Enter your age in whole years.
3

Chest skinfold

mm
Measure the chest skinfold with calipers.
4

Midaxillary skinfold

mm
Measure the skinfold at the midaxillary site.
5

Triceps skinfold

mm
Measure the skinfold at the back of the upper arm.
6

Subscapular skinfold

mm
Measure the skinfold below the shoulder blade.
7

Abdominal skinfold

mm
Measure the abdominal skinfold with calipers.
8

Suprailiac skinfold

mm
Measure the skinfold above the iliac crest.
9

Thigh skinfold

mm
Measure the skinfold at the front of the thigh.

Your estimated body-fat percentage:

0%

Your result is calculated from the seven skinfold measurements and your age using the Jackson-Pollock 7-site method.

Jackson-Pollock 7-Site Calculator Result

0%
body fat
0.000
body density
✓ Free trial
🍽️ Calorie tracking
🥗 Meal plans
🏋️ Workout plans
📓 Workout logging
📊 Progress tracking
🌍 Used by people worldwide
New members: Try GetFIT App for free and keep your nutrition and training in one place.
This calculator provides an informational estimate only and is not medical or health advice. If you have health concerns or questions about whether skinfold testing is appropriate for you, consider speaking with a qualified healthcare professional. Use the result at your own responsibility.
Try the app for free
✓ Free trial for new members
✓ Nutrition and training in one place
🔒 Simple calorie tracking

‍

How Does the Jackson-Pollock 7-Site Calculator Work?

The Jackson-Pollock 7-Site Calculator estimates body-fat percentage from seven skinfold measurements and age. The method first estimates body density using a sex-specific Jackson-Pollock equation and then converts body density into estimated body-fat percentage using the Siri equation. The seven measurements should be taken in millimeters using skinfold calipers.

Measurement What it means In the calculation Why it matters
Chest Skinfold measurement taken at the chest site. mm One of the seven skinfold sites used to estimate body density.
Midaxillary Skinfold measured at the midaxillary area on the side of the torso. mm Contributes to the total skinfold thickness used by the equation.
Triceps Skinfold measured at the back of the upper arm. mm Provides one standardized upper-arm measure of subcutaneous fat.
Subscapular Skinfold measured below the shoulder blade. mm Represents another standardized trunk skinfold measurement.
Abdomen Skinfold measured at the abdominal site. mm Adds an abdominal measurement to the seven-site total.
Suprailiac Skinfold measured above the iliac crest. mm Provides a standardized measurement from the lower trunk.
Thigh Skinfold measured at the front of the thigh. mm Completes the seven-site skinfold measurement set.
Age Your age in completed years. years Age is included directly in the Jackson-Pollock body-density equation.

1. Add the Seven Skinfolds

The chest, midaxillary, triceps, subscapular, abdomen, suprailiac and thigh measurements are added together to create one total skinfold value in millimeters. This combined value is the main measurement input used by the Jackson-Pollock equation.

2. Estimate Body Density

A sex-specific Jackson-Pollock equation uses the seven-site skinfold sum and age to estimate body density. The equation accounts for the nonlinear relationship between total skinfold thickness and estimated body density.

3. Convert Density to Body Fat

The estimated body density is converted into body-fat percentage using the Siri equation. This produces the final estimated body-fat percentage displayed by the calculator.

Male Jackson-Pollock 7-site body-density equation:
Body Density = 1.112 − (0.00043499 × S) + (0.00000055 × S²) − (0.00028826 × Age)

Female Jackson-Pollock 7-site body-density equation:
Body Density = 1.097 − (0.00046971 × S) + (0.00000056 × S²) − (0.00012828 × Age)

Where S = the sum of the seven skinfold measurements in millimeters.

Siri body-fat equation:
Body Fat % = (495 ÷ Body Density) − 450

The Jackson-Pollock 7-site method is an estimation method rather than a direct measurement of body-fat percentage. Results can be affected by caliper quality, anatomical site selection, measurement technique, tester experience, hydration and individual differences. For tracking progress, repeating measurements under similar conditions and using the same technique is generally more useful than focusing on a single reading.

GetFIT App
GetFIT App wrote this article
wrote this
Fitness Calculators
Jackson-Pollock 7-Site Body Fat Percentage Calculator

Jackson-Pollock 7-Site Calculator estimates body-fat percentage from seven skinfold measurements and your age using the established Jackson-Pollock body-density equations and Siri formula. Enter your chest, midaxillary, triceps, subscapular, abdominal, suprailiac and thigh measurements in millimeters to calculate your estimated body-fat percentage. The method is useful for tracking changes in body composition when measurements are taken consistently, although results remain an estimate rather than a direct measurement. Use the calculator as an informational fitness tool and focus on consistent testing conditions when comparing results over time.

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.

How accurate is the Jackson-Pollock 7-Site Calculator?

The Jackson-Pollock 7-Site Calculator provides an estimate of body-fat percentage from seven skinfold measurements, age and sex. Its accuracy depends heavily on correct anatomical site selection and consistent caliper technique. It is most useful for tracking changes over time when measurements are taken under similar conditions.

#1

Results

Calorie Tracking

Our app helps you track your daily calories and nutrients with high accuracy. Just a few clicks and you’re done.

Try for free!
More Meal Plans

How do you take Jackson-Pollock 7-site measurements?

The method uses seven sites: chest, midaxillary, triceps, subscapular, abdomen, suprailiac and thigh. Each skinfold is measured in millimeters with skinfold calipers using standardized anatomical locations. Consistent technique is important because small measurement differences can affect the final estimate.

#1

Results

Recipes for Fat Loss

Our app gives you high-protein fitness recipes that make losing weight and making progress easy every day!

Try for free!

What is the Jackson-Pollock 7-site formula?

The Jackson-Pollock 7-site method first calculates estimated body density from the sum of seven skinfolds and age. Separate equations are used for males and females. Body density is then converted into estimated body-fat percentage using the Siri equation.

#1

Results

High Protein Meals

You’ll never feel hungry on your diet again if you eat the high-protein fitness recipes in our app!

Try for free!

What skinfolds are used in the Jackson-Pollock 7-site method?

The seven skinfold sites are the chest, midaxillary, triceps, subscapular, abdomen, suprailiac and thigh. Together, these measurements provide the skinfold sum used in the body-density equation. The same seven-site structure is used for both sex-specific equations, although the coefficients differ.

#1

Results

Simple Calorie Tracking

With our app’s precise calorie tracking and food diary, hitting a calorie deficit has never been easier.

Try for free!

Can you use skinfold measurements to track fat loss?

Yes, skinfold measurements can be useful for monitoring changes in body composition when the measurements are performed consistently. The individual reading matters less than the trend across repeated measurements taken with similar technique and conditions. Combining skinfold trends with body weight, waist measurements, training performance and progress photos can provide a broader picture of changes.

#1

Results

High Protein Diets for You

Our easy-to-make, high-protein recipes help you hit your ideal daily protein intake effortlessly!

Try for free!

What should you know before using a body-fat calculator?

A body-fat calculator based on skinfolds provides an estimate rather than a direct measurement of body-fat percentage. Results can vary because of measurement technique, caliper placement, tester experience and individual differences in fat distribution. Use the result as an informational fitness metric rather than a medical assessment.

#1

Results

Workout Plans for Your Goals

Our app offers a wide range of workout plans!

Try for free!

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
Apps
Calorie Tracking Yes Yes
AI Powered Meal Analysis Yes No
Intermittent Fasting Log Yes No
Workout Tracking Yes No
Hundreds of High-Protein Recipes Yes No
4-Week Meal Plans Yes No
4-Week Workout Plans Yes No
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
Try the App for Free
Free Trial for new users
Cancel Anytime
Thousands of Users Worldwide
Secure Payment

Who Is GetFIT App For?

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.

You have no idea how many calories to eat Weight loss, muscle building, and maintenance all need different targets — the app calculates exactly how many calories and how much protein your goals require. Try the app! You don't know how to put together a workout plan You show up at the gym but have no idea what to do or in what order? Ready-made, easy-to-follow 4-week workout plans get you started. Try the app! You're tired of bland, boring diet food Who said dieting means dry chicken breast and rice? Choose from hundreds of delicious, high-protein recipes you'll actually want to eat. Try the app! The scale hasn't moved in weeks Stuck on a weight-loss plateau and not sure what's going wrong? Clear tracking and logging help you spot exactly what needs adjusting. Try the app! You're a beginner and don't know where to start Everyone feels lost at the start, with so much conflicting information out there. You get a simple, step-by-step system, no guesswork required. Try the app! You can't hit enough protein every day You know you should, but the numbers never add up? The app helps you plan meals so you actually reach your daily protein target. Try the app! You want a simple, effective plan you can actually follow Whether it's weight loss or muscle building, one clear, day-to-day plan beats ten scattered pieces of advice — and you get it all in one place. Try the app! You don't have time to sit and calculate everything Just describe what you ate, and the AI works out the calories and macros for you in seconds. Try the app! You want to keep progressing without setbacks Consistent tracking and clear goals help you avoid losing weeks of progress or losing your momentum. Try the app! You've tried crash diets before, but they never stuck This isn't another quick fix — it's a sustainable system you can actually build into your everyday life. Try the app! You want to finally hit your goal weight Whether it's a few pounds or something bigger, a clear plan and daily tracking make a real difference in actually getting there. Try the app! You want to look better, feel fitter, and feel more confident As your body changes, your confidence often grows with it — consistent training and nutrition can help with both. Try the app! You want to build muscle effectively A training plan, enough protein, and recovery — you need all three for muscle growth, and you'll find them all in one place. Try the app! You want to lose weight without starving yourself or yo-yo dieting Starving yourself isn't the answer — a sustainable calorie and protein intake is something you can actually stick with long-term. Try the app! You want to build a healthier, fitter lifestyle It's not about one diet — it's about small, sustainable habits around food, movement, and routine that you can keep up long-term. Try the app! You want to finally reach the physique you've always wanted The shape you've always pictured feels a lot more realistic with a clear plan and a consistent daily system behind it. Try the app!
Try the App for Free
Free trial for new members
Cancel anytime
Thousands of members worldwide
Secure payment

GetFIT App Is Not a "Magic Pill" — It's a System That Supports You and Gets You to Your Goal!

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.

Fast, Simple Calorie & Macro Tracking

You describe what you ate, and GetFIT App calculates the calories and macros in seconds — no more digging around or doing math in your head. You'll also see exactly how many calories you have left for the day.

Workout Plans & Workout Logging

Effective 4-week workout plans are ready to go, and your workout log helps you stay consistent and track how you progress from session to session.

High-Protein Recipes & Ready-Made Meal Plans

Hundreds of delicious recipes and 4-week meal plans are waiting for you, so you don't have to figure out what to eat every single day.

Body Weight, Measurements & Daily Habit Tracking

All your important numbers in one place, so you can see exactly whether progress is actually happening — not just feel it, but see it.

Progress Tracking

Clear data and charts help you know exactly where you stand, and what's worth adjusting in the weeks ahead.

Knowledge Resources & a Supportive System

You don't just get tools — you get knowledge too, so you understand why you're doing what you're doing, for the long run.

Try the App for Free
Free trial, new members only
Cancel anytime
Thousands of members worldwide
Secure payment

GetFIT App Will Be Perfect for You, If...

If you relate to any of the statements below, GetFIT App is exactly the right fit for you.

Try the App for Free
Free trial, new members only
Cancel anytime
Thousands of members worldwide
Secure payment

Join Thousands of GetFIT App Users Worldwide

Thousands of people around the world have already joined GetFIT App to track their nutrition, follow workout programs, and work toward their fitness goals. Join our growing global community and get the tools you need to manage your fitness journey in one place.

Start your Free Trial!

Everything You Need for a Fitter Body is here in GetFIT App!

Set calorie and macro goals, track your meals and activity, follow structured workout and meal plans, and monitor your progress over time. GetFIT App brings nutrition tracking, fitness planning, and everyday tools together in one simple membership.

Start your Free Trial!

Try GetFIT App for 5 days free!

Discover the premium features of the GetFIT App during a free trial: personalized calorie calculation and tracking, meal plans, recipes, workout programs, e-books, and much more. Start your transformation today!

Start Free Trial

Dear User! Unlock your Dream Body Today!

Start your free trial today! With your premium membership, you’ll get immediate access to all the tools and content that help you lose weight, build muscle, and develop a healthy lifestyle.

Click to Get Started