Body Fat Percentage Calculator
Use this calculator to estimate your body fat percentage.
This is a good tool for measuring fat loss progress since the scale isn’t always accurate due to weight fluctuations.
What is Body Fat Percentage?
Body fat percentage is the proportion of your body weight that is comprised of fat tissue.
Body fat percentage usually relates to your fitness level and it can be a better indicator of health than your BMI.
Here’s how the American Council on Exercise relates the body fat percentage of men and women to their level of fitness.
| MEN | WOMEN | |
| Essential Fat | 2-5% | 10-13% ** |
| Athletes | 6-14% | 14-20% ** |
| Fitness | 14-17% | 21-24% |
| Acceptable | 18-24% | 25-31% |
| Obesity* | 25%+ | 32%+ |
*Men are considered borderline at 25% body fat and clinically obese at 30%, while women are borderline at 30% and clinically obese at 35% body fat.
**A lower body fat percentage for women increases chance of amenorrhoea (cessation of menstruation).
How Tracking Body Fat Percentage is Useful When Counting Macros
Measuring and tracking body fat percentage is normal when counting macros for several reasons.
- Knowing your body fat percentage is important in formulating an accurate TDEE (total daily energy expenditure). Most standard formulas base their calculations on what is considered to be an “average” body fat percentage. Therefore, those with a high BF% or those with a low BF% will have skewed results when using the standard TDEE formula. Special calculations are needed for obese individuals as well as those that are very fit.
- Most flexible dieters are aiming to decrease their fat mass and increase their muscle mass. Tracking BF% change is an great way of tracking progress.
- Knowing your body fat percentage allows you to calculate how many pounds of fat your body has. This helps you establish a realistic and healthy goal weight.
What About Electronic Devices?
Electronic body fat percentage devices have become pretty popular but I’ve found most to be inconsistent and inaccurate. In fact, don’t even bother using the scales with BF% built in or those handheld devices.
Some gyms have immersion tanks and these are probably the most accurate for measuring BF% electronically. Apart from that, using calipers with the skinfold method is the best option and will provide you with a better estimation.
Having Body Fat is Healthy
Having some body fat is healthy and the body actually needs fat tissue to regulate hormone production and body temperature. Having too low BF% poses health risks.
Alarmingly, there’s a trend with men in the IIFYM community to get down to an extremely low BF% where the skin is so void of fat that just about every muscle striation is visible.
This isn’t sustainable or healthy. Guys really shouldn’t strive for anything lower than 5% and women 13% if they want their bodies to function optimally.
Other Helpful Calculators
See also the IIFYM Macro Calculator and Ideal Body Weight Calculator.
- Jackson, A. S., & Pollock, M. L. (1978). Generalized equations for predicting body density of men. British Journal of Nutrition, 40, 497-504.
- Jackson, A. S., Pollock, M. L., & Ward, A. (1980). Generalized equations for predicting body density of women. Medicine and Science in Sports and Exercise, 12, 175-182.
17 Comments
yes my body fat is 25% and i want it to stay that way . I don’t want to turn them into muscles and become so lean. My husband said he want to feel some little fluffiness when he hugs me
Thanks for the warning against too low BFP. My BFP has gone too low, and I am suffering health problems. My bones are aching most of the time. And I have constant pain in my stomach. Why didn’t I wake up when my friends were trying to warn me. I have an inactive thryroid, and depend on thyroxins to function as a thryroid. Too much of them act as an overactive thyroid, too little of them act as an underactive thryroid. Guess the thyroxins were too much for me. Now I’ve decreased the dosage, and my brisk walking, and am eating more. It’s working. Because my weight has started increasing again. I’ve gone from 47.8kg to 49.3kg and will not rest until I weigh at least 51kg. I was at my healthiest then.
Whats the formula to calculate this?
I’m 55 female 5’6 220lbs body BMI 34.9%
Body fat 49.2
I’m doing the Keto and can’t figure out how to do the macros. I need to lose 60lbs. I was told not to go over 20 grams of carbs.
Will you please help me.
Please see our Keto Calculator here.
Do you want me to measure three time each time I measure to get a mean?
Yes, it is recommended to do each measurement 3 times and then take the mean. This improves accuracy.
So I am 155 lb 5,8 height runner need to know my cal intake
Hi Sandra, You can use our macro calculator here or you can select one of our coaching options. When you sign up for coaching you would describe your runs to me and then I’ll calculate your calorie/ macro requirements.
Hey y’all
So I weigh 190 pounds. I’m super short (5’2). I never really weighed myself because I hated the number. I’m usually a size 8 in pants though and have a 30 inch waist. I do work out very often and lift heavy. So it’s nice to see and know that most of my weight is muscle!! Wooo
160%… Must take up rapid fat loss regime. Oooor… You could add ‘height’ to the list of measurements required 🤔
I like this simple, no nonsense formula. Yes, I realize it may not be 100% accurate, but I’m sick of all those calculators that require me to measure neck, wrists etc… just to get something very similar.
pff based on this i’m supposed to be dead because i have -1.59%
no if you havea negative bf% it means that you might have heart problems etc
Thanks For This.