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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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Navyvet   This method of Body Fat % is about 95% accurate. I was a personal trainer (CFL) in the Navy and no believed that this was an accurate reading. So I went to the Air Force Base and got in the Egg and the body fat percentage was exactly the same. - 11/17/2015 8:50:54 AM

Jimmy   to TD Dugal, I firmly disagree that "NO-ONE has a 46INCH NECK!!!!" If you would watch Star Wars, which is a factual documentary that Jabba the Hut most certainly has a 46" or greater neck circumference. Fact. - 11/16/2015 10:05:58 AM

Allen Li   For a guy thats 5' 7", 160 lb. 30.6 in. waist, and 15 in neck puts me at 12%. I'm currently trying to drop to 9% so I can see my abs without flexing (I only see them now only if I flex). Aside from a calorie deficit, what else can I do to lose that fat? - 11/1/2015 2:37:29 PM

tonza   i think your calculator is broken. why would decreasing your neck measurement increase your bf percentage? but if i say my neck is huge its says im ripped as f*ck - 10/22/2015 5:08:26 AM

Chris   Wasn't as bad as I thought. Assuming an error of 3% or so - this puts me at 15-21%. I prefer this to the BMI method which doesn't distinguish between muscle and fat because it only uses weight. - 8/19/2015 3:30:02 AM

Katie Slock   @TD Dugal: She didn't say 46 inch neck... she said 14. - 8/3/2015 4:07:45 PM

TD Dugal   @Tracy Robinson: NO-ONE has a 46INCH NECK!!!! Even if your tape read 46CM it would still be huge for your height and weight!!!! Remeasure yourself! - 7/22/2015 2:57:38 AM

tracy robinson    Gender Female Weight: 180 lbs Height 5 ft 3 in Measurements: Waist (at narrowest) 38 in Hip (at widest) 46in Neck (at narrowest)14 in Body Fat 47 % Fat Mass 85 lbs Lean Mass 95 lbs Body Fat Category Obese - 7/14/2015 9:26:17 AM

Chris   Nat - This actually isn't a very good way to measure obesity, but the BMI is just garbage. Everyone would do well to simply not use the BMI at all. If you lose fat and build muscle, your BMI will stagnate, which gives you the impression you're not making progress. The best you can do is monitor your weight, measurements and body fat percentage. Even with body fat percentage, it helps to form an average from a few different methods and not just rely on a calculator or even one of those pulse scales. - 6/25/2015 8:37:11 PM

kev   i keep getting 0 percent. i work out but there is no way in hell im at 0. i've remeausred a few times already to make sure i wasnt fucking it up. so it can't be accurate. - 6/24/2015 8:46:04 AM

Darren   I do actually think that this method is reasonably accurate. I used this method several times of the past 12month's and the readings to tend to correspond with my overall weight loss. Obviously it won't be as accurate as hydrostatic testing, but it does seem to correspond with what I see in the mirror, which is a nice drop in total body weight and comparative body fat. According to these measurements, I've gone from 28% BF at 119kg, to 12% BF at 93kg over the past 12months. And does seem to be in accordance with the comparative differences in the tape measurements. - 6/23/2015 4:37:50 AM

Nat   I found the body fat % calculation encouraging. I had been exercising but my BMI stubbornly stayed in the overweight range but when I checked body fat % using this formula was 20% which was well in the acceptable range - 6/20/2015 10:35:18 AM

jace   13% body fat, but my abs are nearly nonexistent. Is this normal. - 6/14/2015 8:24:55 PM

polishe   Does having large breast account for anything? - 5/29/2015 6:39:49 PM

Nick F   At 6'2", 214 lbs, 34 inch waist, 15 inch neck, it puts me at 16% Body Fat, which seems pretty accurate. My abs are visible, but I don't have a 6 pack. - 5/15/2015 9:03:38 AM

guyinnavy   Please understand something. This system is not, and was never meant to be, an accurate measurement of your actual BMI. It is designed to measure your appearance of fitness. This is to make our military appear fit and impress of intimidate other military and citizens. Don't believe me? Read the instruction. - 5/14/2015 2:28:10 PM

Leroy   my BF numbers for comparison across methods: Navy tape formula: 3% most recent InBody230: 4.9% Recent Tanita: ~ 5% to 8%, depending on hydration Calipers (3-pt Jackson Pollack): ~ 6% Calipers (suprailiac): ~ 9% based on my last two DEXA scans, I would guess BF is just above 9% - 5/1/2015 1:24:13 AM

Leroy   I daily use calipers, a tanita bioimpedance scale, and these formulas at home, I periodically use an InBody230 bioimpedance scale at a supplement store where I also get tested with calipers by an experienced tester, and I have had three DEXA scans in the last year. I can offer some general observations. (1) Using the tape measure and calipers objectively on yourself is difficult. (2) The formulas in all these methods use assumptions that produce systematic errors. (3) The methods are more consistent with each other if you are fat, but diverge considerably as you get leaner. (4) formulas like the US Navy BF estimator drastically underestimate BF compared to a DEXA scan, and it gets worse as you get leaner. (5) how you look and feel is more important than a number, but the numbers help you to be objective about your health and fitness... no one who values fitness wants to admit to themselves that they are fat. - 5/1/2015 1:13:47 AM

nyanyanyah   my BMI is almost 25. I figured because I love running and hiking a little too much, I must be heavy from muscles. how surprised I was when the impedance machine told me my body fat is 33%. I don't even have boobs. I don't even have love handles. I wear asian size s for skirt and size m for tops, goddamnit. this test tells me my bf% is 23%. now I don't know what to trust anymore. - 4/25/2015 2:45:11 AM

jim malone   cool - 4/24/2015 8:21:32 PM

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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