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US Navy Calculator - Body Fat Calculator

What is my navy fitness level when measuring body fat using the Navy Body Fat Test and Navy Body Fat Chart?

This Body Fat Navy Calculator uses the U.S. Navy fitness formula to get an estimated measuring of body fat percent. Use a tape measure then enter your waist, hip, and neck measurements. Combine these measurements with your gender and height and this navy calculator will estimate body fat percent, lean mass, fat mass, and your general navy fitness category. (You can see the Navy Body Fat Chart by clicking the down arrow icon right under the results.) The water displacement test is the most accurate way to determine body fat percent, but the Navy Body Fat test or YMCA formula is accurate within 1-3% for most people.

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Captain Obvious   To everyone commenting that it's inaccurate... It doesn't matter if there are more accurate methods. THIS IS THE METHOD THAT THE US NAVY USES TO DETERMINE THEIR STANDARDS. It's not the method that your local gym uses. It's not the method your doctor uses. It's ONLY a standardized method for weighing in during US Navy Physical Readiness Tests. - 4/15/2014 7:51:33 PM

bob   5'4'' 96 lbs male with 26'' waist and 13'' neck, it says I have 1% body fat and techically dead, which I'm not...Innacurate. - 4/14/2014 5:02:27 PM

dr   This is the less accurate test that can be done. Your two best are the electronic and the dunk test. - 4/13/2014 9:40:45 AM

ouflak   Disappointingly inaccurate and far to dependent on neck size. According to this calculator, I'm at 5% body fat. Now I'm lean, and unquestionably active and athletic, but I've never been at 5% body fat in my life, even when I was winning 5ks. And that's with some fudging. If I put my actual neck size in their (18 inches, buying dress shirts is very difficult because of this), the calculator says I have 0% body fat. Which I'm fairly certain, if my understanding of human biology is accurate, means I should fall over dead any second now. - 4/9/2014 6:33:13 AM

Patricia   FYI...the calculator needs only 4 pieces of, waist, hip, neck to generate your body fat percent. The wt is only used to estimate how much of your body is fat mass vs lean mass, but it is completely irrelevant to BF%. Regardless of how you personally feel about it, it is deamed pretty accurate, though nothing is 100% and there are always a few exceptions. Hips can be a disadvantage to some women, but in most cases a small waistline should counteract. If you have an expanded waistline and wide hips, your body fat is likely in an unacceptable range, whether you feel like you look like it or not. As a woman, I find it interesting that as you go down the list only women are questioning the accuracy of the tool. It is pretty accurate, if you don't like it, change it. - 4/3/2014 8:33:11 AM

AB   Not accurate: I am 5'3 female, 113 pounds, 25 waist and 35 hips says I'm 21% fat. - 3/17/2014 3:14:07 PM

LP   Waist measurements can increase due to building muscle. This calculator will show it as an increase in body fat instead even though your actual body fat might have decreased. - 3/16/2014 3:32:11 AM

AT   I'm 5'4 115, this says I'm 16%. I think this is generous honestly. Skin fold testing In 2 days. Will see how accurate it is. - 3/11/2014 1:18:53 PM

KV   No where near as accurate as a 7 point calipers test. 113lbs 25.75" & 36.5". With calipers I'm 14.7% and here I'm 22%. - 3/1/2014 10:02:06 AM

Mark   As accurate as calipers. 182lbs, 31", 16" 10% :-) - 2/22/2014 11:34:49 AM

Peter   Very accurate ! Hy America from Slovenia. - 2/13/2014 10:51:48 PM

RJ   all you need to get over your fat selves, this is pretty accurate if you do it right. - 2/12/2014 8:52:30 PM

jerry   Just as a suggestion, for those of you not getting correct measurements. Try not doing this test after you have worked out, your muscles may have swollen up giving you incorrect measurements. - 2/12/2014 5:34:13 PM

Mike   This is not even close to accurate. I weigh 175 and am 6 foot 1. it says i am 18% body fat when i really am 8-9 - 2/10/2014 9:00:49 AM

Melvin   Consistency doesn't allow you to track how much you're losing. If the ratios that is measures are not accurate, you could be losing more or less than 2% body fat. In fact, if the measuring system is not accurent (even though it's consistent), I would say there is a good chance it will monitor your progress accurately (because the function will probably not just be off by a constant). I would use an alternative way of measuring. - 2/5/2014 10:58:22 AM

Richard   For me this calculator is very accurate, but I don't know how accurate it is in general. I estimated my body fat with this calculator to 14% before having it scientifically tested to 13,5%. I - 2/5/2014 5:26:25 AM

H   Yvette - your weight has nothing to do with your fat percentage in this calculation. The percentage is based on waist, hip and neck measurements. Your weight is used to determine your Fat and Lean masses. - 2/4/2014 11:13:28 AM

Yvette   I am not sure how accurate this is. When I put in my measurements, 5'4", 12, 29, 40 respectively, it said I was obese - even when setting my weight to 100 lbs. - 1/29/2014 10:41:14 AM

john   According to this I am 23% fat. A fat measuring scales said 22.9%. - 1/25/2014 7:35:43 AM

Patrick   Regardless of how accurate this calculator is, it is consistent. If you use this OVER TIME you will be able to TRACK ANY INCREASE OR DECREASE in body fat. For example: I can see that my body fat has decreased from an estimated 16% to 14% over the last 3 weeks (as Iím trying to lose fat after Xmas). So even if my actual number is wrong (I could be anywhere between 11% and 17%) I know that I lost 2% body fat in 3 weeks. - 1/23/2014 2:39:49 AM

The Body Fat Navy Calculator is a Good Tool for Measuring Body Fat and Navy Fitness Level

The comments show passionate emotions and controversial disussions over this Body Fat Navy Calculator! Whether you like the results or not, we've had a couple of recruiters tell us they use it all the time. Please keep in mind that we did not develop the Navy fitness criteria, we just created this Body Fat Navy Calculator using their formulas and interpreted from their body fat chart as a way to help people who are monitoring and measuring body fat. I haven't been able to verify this, but I would guess the Navy's body fat test was developed decades ago by men and during a time when it was only used on male recruits because female servicewomen were not in combat roles.

No body fat percent calculator will be very accurate for people with a very muscular build. There is no argument that a hydrostatic or underwater test is by far the most accurate tool for body fat test tool, but it is not a practical tool to measure ongoing progress due to cost and availability.

There are other formulas for measuring body fat. You may also be interested in another body fat percent calculator: YMCA Body Fat Calculator, 3 Skinfold Body Fat Calculator, 4 Skinfold Body Fat Calculator, and 7 Skinfold Body Fat Calculator.

Field Help

Input Fields

TitleA title for these calculator results that will help you identify it if you have printed out several versions of the calculator.

US/MetricChoose US or Metric units.

GenderSelect your gender.

WeightYour current scale weight.

HeightYour height. Use feet (ft) and inches (in) if units is US or centimeters (cm) if units is Metric.

Waist (at narrowest)Your waist measurement at its narrowest point (usually right above the belly button).

Waist (at navel)Your waist measurement at the navel (or belly button).

Hip (at widest)Your hip measurement at its widest point.

Neck (at narrowest)Your neck measurement at its narrowest point.

Output Fields

Body FatThe approximate percentage of your body's mass that is made up of fat.

Fat MassThe portion of your weight that is fat.

Lean MassThe portion of your weight that is lean (not fat).

Body Fat CategoryYour body fat category depends on your gender and your body fat percentage.

Body Fat Categories TableThis table shows you the Body Fat Range for each Classification so you can see how close your calculated Body Fat percentage is to the next Body Fat Classification range.

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