What Is the Army Body Fat Tape Test?
The Army tape test is a two-number estimate: one tape reading around the abdomen at the level of the navel, and body weight to the nearest pound. No calipers, no scan, and from June 2023 onward no neck or hip measurement either.
The multi-site tape method the Army used before that change — and the one the Navy still runs — is on our Body Fat Calculator.
The One-Site Abdominal Method
Until June 2023 the Army borrowed the Navy's approach: neck and abdomen for men, neck and waist and hips for women, each cross-referenced against height in a printed lookup figure. The revised DA Forms 5500 and 5501 dropped every site but one. Men and women were both measured at the abdomen, at the navel, and height left the arithmetic entirely, replaced by body weight.
The two equations are not versions of one another. The male one moves 1.99 points for every inch of abdomen and subtracts 0.12 for every pound of body weight. The female one moves 1.27 points per inch and subtracts 0.015 per pound. A woman's reading is therefore governed almost entirely by the tape, while a man's is a genuine contest between the tape and the scale.
Both worksheets left a second door open. Each carried fields for a supplemental body fat assessment on approved equipment, naming the machine and the facility, as an alternative route to the same percentage for units that had access to one.
Where the Tape Test Sat in the Process
Nobody was taped at random. A soldier was first screened against the height and weight table for their age and sex, and only those above the screening weight went on to the tape, which is why it was never a measurement every soldier took.
Failing the tape meant enrollment in the Army Body Composition Program, and the worksheet stated the expected rate of progress in plain terms: a recommended 3 to 8 pounds, or one percentage point of body fat, per month.
It was a screening gate rather than a verdict, and it was never intended to be read as a clinical measurement of anything.
What This Calculator Asks For
Six fields, three of which are toggles:
- Sex — men and women use different equations, and the male one responds to the tape about 1.6 times as strongly.
- Age — used only to pick the AR 600-9 maximum. It never touches the percentage itself.
- Weight — pounds or kilograms. Kilograms are multiplied by 2.20462 before the equation sees them.
- Abdominal circumference — inches or centimeters, taken at the navel. Centimeters are divided by 2.54 first.
The toggles open on Male, Pounds and Inches. The three number boxes start empty, so nothing is computed until you fill them and press Calculate; the page does not recalculate as you type.
What Replaced the Tape Test in July 2026
On 7 July 2026 the Army made waist-to-height ratio its sole body composition assessment. The tape test, the height and weight screening tables and every supplemental body fat method were rescinded together, in one document.
The Waist-to-Height Standard
The measurement is a waist circumference taken at the navel, in inches, divided by height, in inches. A ratio of less than — but not equal to — 0.55 satisfies the requirement. Everything that used to depend on who you were has gone with it: no age bracket, no separate column for men and women, no fitness-test exemption, and no supplementary method to appeal to.
The recording rule matters more than it looks. DA Form 5500 now instructs that the ratio be carried to three decimal places, that it not be rounded, and that any digits beyond the third be disregarded. The form's own worked example is a calculated 0.549888, recorded as 0.549, which meets the standard. A 0.550 does not.
Soldiers are screened at least twice a calendar year. A ratio of 0.55 or higher means enrollment in the Army Body Composition Program and a flag, but only after a confirmation measurement taken by a different team on the same duty day. Enrollment brings a commander-directed medical exam for active-component and Active Guard Reserve soldiers to rule out an underlying condition, and the Army has stated that no separations for a waist-to-height failure will occur until it completes a 180-day review of the standard.
Maximum Passing Waist by Height
Because the threshold is a straight ratio, the largest passing waist is 0.55 times your height. Each of the three waist readings is rounded down to the nearest half inch, but the number divided by height is their average, recorded to three decimal places — so the figure on the form can sit between the half-inch marks, at 37.167 or 37.333 as readily as 37.000.
| Height | Ratio ceiling (0.55 × height) | Largest average waist that passes | Next recordable average |
|---|---|---|---|
| 5 ft 2 in (62 in) | 34.10 in | 34.000 in → 0.548 | 34.167 in → 0.551, fails |
| 5 ft 4 in (64 in) | 35.20 in | 35.167 in → 0.549 | 35.333 in → 0.552, fails |
| 5 ft 6 in (66 in) | 36.30 in | 36.167 in → 0.547 | 36.333 in → 0.550, fails |
| 5 ft 8 in (68 in) | 37.40 in | 37.333 in → 0.549 | 37.500 in → 0.551, fails |
| 5 ft 10 in (70 in) | 38.50 in | 38.333 in → 0.547 | 38.500 in → 0.550, fails |
| 6 ft 0 in (72 in) | 39.60 in | 39.500 in → 0.548 | 39.667 in → 0.550, fails |
| 6 ft 2 in (74 in) | 40.70 in | 40.667 in → 0.549 | 40.833 in → 0.551, fails |
| 6 ft 4 in (76 in) | 41.80 in | 41.667 in → 0.548 | 41.833 in → 0.550, fails |
The third column moves in steps of a sixth of an inch, because the average of three half-inch readings is always a multiple of one sixth, which is why recorded waists end in .000, .167, .333, .500, .667 or .833. At 5 ft 8 in that is what separates a pass from a failure: readings of 37.5, 37.5 and 37.0 average to 37.333 and divide out to 0.549, while three readings of 37.5 average to 37.500 and give 0.551.
The 5 ft 10 in row is the one worth staring at. Three readings of 38.5 average to exactly 38.500, which divides into 70 inches at exactly 0.550, and 0.550 fails, because the standard is strictly less than 0.55. Landing precisely on the number is not a pass.
The calculator above does not work this out for you — it runs the retired tape equations. The division itself takes a phone, and the table covers eight common heights.
The Fitness-Test Exemption Is Gone
Between 2023 and 2026 a soldier could out-run the tape. DA Form 5500 carried a checkbox reading "Soldier scored a 540 or higher on the ACFT and is exempt from the body fat assessment," and when the Army Fitness Test replaced the Combat Fitness Test the qualifying score became 465.
That route closed in July 2026. The Army's guidance says the exemption for soldiers scoring 465 or higher has been rescinded and that every soldier must meet the waist-to-height standard regardless of fitness test performance. Cadets at West Point and in Senior ROTC fall under the same rule.
One scheduling protection survived the change: units must leave at least seven days between a soldier's fitness test and their waist-to-height screening, though commanders may shorten that when operational demands require it.
How Do You Calculate Army Body Fat?
Two equations, one measurement each, and no lookup table needed — although AR 600-9 printed one anyway, as figures B-1 and B-2, for units working without a calculator.
The Army Body Fat Formula
Weight in pounds, abdominal circumference in inches, exactly as printed on the June 2023 worksheets:
Men — DA Form 5500 % Body Fat = −26.97 − (0.12 × body weight in pounds) + (1.99 × abdomen circumference in inches)
Women — DA Form 5501 % Body Fat = −9.15 − (0.015 × body weight in pounds) + (1.27 × abdomen circumference in inches)
Height is absent from both. The multi-site method the Army ran until 2023 read the tape against a height column, and so does the Navy version still in use; this one dropped height and put body weight in its place. A soldier of 5 ft 4 in and one of 6 ft 2 in who weigh the same and tape the same abdomen receive the same percentage.
Calculating It Step by Step
- Measure the abdomen at the navel, rounding each reading down to the nearest half inch. Take three readings and average them to the nearest half inch.
- Weigh in to the nearest pound.
- Multiply the abdomen figure by 1.99 if you are male, 1.27 if you are female.
- Multiply the body weight by 0.12 if you are male, 0.015 if you are female, and subtract that.
- Subtract the constant — 26.97 for men, 9.15 for women. What remains is the percentage.
- Compare it with the maximum for your age bracket: 20, 22, 24 or 26 percent for men, and 30, 32, 34 or 36 for women.
The order does not matter, because the result is a straight sum of three terms. Only the first step involves judgment, which is why two graders taping the same soldier on the same morning can hand back different percentages.
Worked Example: A Male Soldier
A 25-year-old man weighs 185 pounds and tapes 35.0 inches at the navel. The abdomen term is 1.99 × 35.0 = 69.65. The weight term is 0.12 × 185 = 22.20. Take away both the weight term and the 26.97 constant: 69.65 − 22.20 − 26.97 = 20.48.
Entered in the calculator, the panel returns "20.5% body fat | ABCP max for your age/sex: 22% | Result: WITHIN the ABCP standard by 1.5 points". That 1.5 comes from the unrounded 20.48, not from the 20.5 on screen.
A single inch would have changed the verdict. At 36.0 inches the same man reads 22.5% and the third line becomes "EXCEEDS the ABCP standard by 0.5 points" — his whole margin spent on one inch of tape.
Worked Example: A Female Soldier
A 30-year-old woman weighs 155 pounds and tapes 33.5 inches. Her abdomen term is 1.27 × 33.5 = 42.545 and her weight term is 0.015 × 155 = 2.325, so 42.545 − 2.325 − 9.15 = 31.07.
The panel shows "31.1% body fat | ABCP max for your age/sex: 34% | Result: WITHIN the ABCP standard by 2.9 points". Her bracket, 28 to 39, allowed 34%.
Ten extra pounds at the same tape reading move her to 30.9% — a shift of 0.15 of a point. The same ten pounds move a man 1.2 points. That asymmetry is built into the coefficients, not into the bodies they describe.
Entering Kilograms and Centimeters
The unit toggles convert before the equation runs, and nothing else about the calculation changes, so a metric entry and its imperial twin agree at the decimal place shown.
84 kg with an 89 cm abdomen is 185.19 lb and 35.04 in. At 25 years old that returns "20.5% body fat | ABCP max for your age/sex: 22% | Result: WITHIN the ABCP standard by 1.5 points" — the same three lines as the 185 lb, 35.0 in example above.
A centimeter of abdomen is worth 0.78 of a point to a man and exactly 0.50 to a woman, since 1.27 divided by 2.54 lands on a half with nothing left over. A kilogram is worth 0.26 to a man and 0.03 to a woman.
Army Body Fat Chart
Three charts sat behind this test: the table of pass/fail maximums, and the two grids AR 600-9 printed so that a grader could read a percentage straight off the page. A fourth table below is this page's own, turning the equations around to find the largest abdomen that still passed. Every figure in the grids and in that fourth table comes from running the equations above; the maximums are AR 600-9's.
Maximum Allowable Body Fat by Age and Sex
AR 600-9 Table B-2, reproduced on the back of both worksheets. This is the line the calculator holds your result against:
| Age group | Male maximum | Female maximum |
|---|---|---|
| 17 – 20 | 20% | 30% |
| 21 – 27 | 22% | 32% |
| 28 – 39 | 24% | 34% |
| 40 and older | 26% | 36% |
The brackets are hard edges rather than gradients. A man reading 20.5% is 0.5 points over the line while his recorded age is 20 — the panel says "EXCEEDS the ABCP standard by 0.5 points" — and 1.5 points under it the year he turns 21.
Six points separate the youngest bracket from the oldest, for both sexes. The gap between the male and female maximum is a flat ten points at every age.
Male Body Fat by Weight and Abdomen
Percentages for men, read down to your weight and across to your tape reading. For a 21-to-27-year-old the 22% line is crossed somewhere in the middle of each row.
| Weight | 32 in | 34 in | 36 in | 38 in | 40 in |
|---|---|---|---|---|---|
| 160 lb | 17.5% | 21.5% | 25.5% | 29.5% | 33.4% |
| 180 lb | 15.1% | 19.1% | 23.1% | 27.1% | 31.0% |
| 200 lb | 12.7% | 16.7% | 20.7% | 24.7% | 28.6% |
| 220 lb | 10.3% | 14.3% | 18.3% | 22.3% | 26.2% |
| 240 lb | 7.9% | 11.9% | 15.9% | 19.9% | 23.8% |
Read the bottom-left corner with suspicion. A 240-pound man with a 32-inch abdomen computes to 7.9%, which describes a competitive bodybuilder and very few other people. The equation is a straight line and extrapolates cheerfully into combinations its reference sample cannot have contained many of.
One inch of tape is worth 1.99 points, and canceling an inch takes 16.6 pounds of extra body weight. That exchange rate is what tilts the whole grid: 160 lb at 34 in reads 21.5%, while 220 lb at 38 in — four inches more tape and sixty more pounds — reads 22.3%.
Female Body Fat by Weight and Abdomen
The same grid for women. What stands out is how little the weight column does.
| Weight | 30 in | 32 in | 34 in | 36 in | 38 in |
|---|---|---|---|---|---|
| 120 lb | 27.2% | 29.7% | 32.2% | 34.8% | 37.3% |
| 140 lb | 26.9% | 29.4% | 31.9% | 34.5% | 37.0% |
| 160 lb | 26.6% | 29.1% | 31.6% | 34.2% | 36.7% |
| 180 lb | 26.3% | 28.8% | 31.3% | 33.9% | 36.4% |
| 200 lb | 26.0% | 28.5% | 31.0% | 33.6% | 36.1% |
Eighty pounds — the entire height of the table — moves any column by 1.2 points. Two inches of tape move any row by 2.54 points. That step is computed before the cells are rounded to one decimal, so subtracting two neighboring cells gives 2.5 in one place and 2.6 in another: 32.2 to 34.8 looks like 2.6, while 29.7 to 32.2 looks like 2.5. For a woman the tape is not the dominant term so much as very nearly the only one.
That is why her grid reads almost like a single-column lookup. At 34 inches the answer is somewhere between 31.0% and 32.2% whatever the scale says.
The Largest Abdomen That Still Passed
Turning the equations around. For a soldier in the 21-to-27 bracket, this is the biggest half-inch tape reading that still came back WITHIN the standard, with the percentage it produced.
| Body weight | Man, limit 22% | Woman, limit 32% |
|---|---|---|
| 140 lb | 33.0 in → 21.9% | 34.0 in → 31.9% |
| 160 lb | 34.0 in → 21.5% | 34.0 in → 31.6% |
| 180 lb | 35.0 in → 21.1% | 34.5 in → 32.0% |
| 200 lb | 36.5 in → 21.7% | 34.5 in → 31.7% |
| 220 lb | 37.5 in → 21.3% | 35.0 in → 32.0% |
| 240 lb | 39.0 in → 21.8% | 35.0 in → 31.7% |
The two columns tell opposite stories. A hundred extra pounds buys a man six inches of abdomen — his exact crossing point moves from 33.050 in at 140 lb to 39.080 in at 240 lb. The same hundred pounds buys a woman 1.18 inches, from 34.055 in to 35.236 in.
Because the tape is recorded in half inches, the practical answer is coarser than the crossing point. A 25-year-old man at 160 lb passes at 34.0 in with "21.5% body fat" and fails at 34.5 in with "22.5% body fat". There is no half-inch reading in between for him to land on.
How to Read Your Result
The panel returns three segments, whatever the numbers are. Reading them out of order is the usual mistake, because the percentage means very little until you have seen which maximum it is being held against.
The Three Lines the Panel Returns
For the 25-year-old man at 185 lb with a 35.0-inch abdomen, the output in full is "20.5% body fat | ABCP max for your age/sex: 22% | Result: WITHIN the ABCP standard by 1.5 points". The page shows the first segment as the large readout and the other two as labeled rows beneath it.
The count never changes. There is no fourth line when you pass and no shortened version when you fail. The only difference between the two is the word WITHIN or EXCEEDS in the third segment, and the margin that follows it is an absolute value in either case — a fail of 0.5 points and a pass of 0.5 points print the same number.
That margin is worked out before the percentage is rounded, so occasionally it disagrees with a subtraction you do yourself. A 25-year-old man at 187 lb and 34.0 in gets "18.3% body fat" against a 22% maximum and a margin of "3.8 points", because the unrounded percentage is 18.25. Subtracting the two figures on screen gives 3.7.
What an Inch and a Pound Are Worth
Both equations are straight lines, so these exchange rates hold at every point on the scale. The Navy's logarithmic method behaves differently, with a centimeter worth more to a lean reader than to a heavy one.
| Change | Men | Women |
|---|---|---|
| 1 inch of abdomen | +1.99 points | +1.27 points |
| Half an inch (one tape step) | +0.995 points | +0.635 points |
| 1 cm of abdomen | +0.78 points | +0.50 points |
| 10 lb of body weight | −1.20 points | −0.15 points |
| 1 kg of body weight | −0.26 points | −0.03 points |
| Weight needed to cancel one inch | 16.6 lb | 84.7 lb |
The last row is the one that catches people out. A man really can offset an inch of waist by carrying 16.6 more pounds. A woman would need 84.7, which is less a strategy than a description of how little her weight term does.
Half an inch is the finest step the tape records, and for a man that step is almost exactly one percentage point. A grader who rounds the same abdomen down where another rounds it up moves the result a full point.
Readings on the Line
The verdict is decided on the unrounded percentage while the display is rounded to one decimal, so the two can look as though they contradict each other. At 160 lb a 25-year-old man crosses 22% at 34.256 inches. Enter 34.25 and the panel says "22.0% body fat" and "WITHIN the ABCP standard by 0.0 points"; enter 34.26 and it still says "22.0% body fat" while the verdict flips to "EXCEEDS the ABCP standard by 0.0 points".
Both are behaving correctly, and neither is a measurement anyone could take — a hundredth of an inch is about the width of a pencil line. The lesson is the one underneath: a margin printed as 0.0 or 0.1 points sits inside the noise of the method rather than describing a result.
Treat anything under about a point as a coin toss. At 190 lb and 36.0 inches the panel returns "WITHIN the ABCP standard by 0.1 points", and a grader whose tape reads half an inch higher returns 22.9% and a 0.9-point failure instead.
When the Tool Refuses to Answer
Leave any of the three number boxes empty and the calculation never runs. The page names whichever fields are blank — "Enter a value for Age." when one is missing, or "Enter a value for: Age, Weight." when several are. The toggles cannot be blank, since they open on Male, Pounds and Inches.
Values that are filled in but impossible are caught inside the equation instead, and they surface differently. An age below 17, or a weight or abdomen of zero or less, returns the sentence "Please enter valid age (17+), weight, and abdominal circumference." Because that sentence carries a digit, the page prints it in the large readout where the percentage would go rather than in the amber notice the blank-field messages use, so it is worth reading the panel rather than glancing at it.
There is also a floor. The equation can return a negative number — a 180-pound man with a 24-inch abdomen computes to −0.81 — and anything below 1% is clamped up, so "1.0% body fat" is the lowest reading the tool will ever show.
How to Take the Abdominal Measurement
The procedure is written on the worksheet itself, and it is still worth following, because a self-measurement taken any other way cannot honestly be compared with the one you take next month.
The Recorded Procedure
- The tape runs horizontally around the abdomen at the level of the navel — not the narrowest point of the waist, and not the hip bones.
- Each reading is rounded down to the nearest half inch. Rounding down is deliberate, and it favors the soldier.
- Three readings are taken, then averaged to the nearest half inch.
- Body weight is recorded to the nearest pound, and height to the nearest half inch, even though the one-site equation never uses height.
Rounding direction was not uniform across the older method. On the multi-site worksheet the neck was rounded up while the waist and hips were rounded down, and both of those choices push the computed percentage downward — a bigger neck and a smaller waist each reduce it.
Why Half Inches Matter So Much
Half an inch is the resolution of the entire test, and for a man it is worth 0.995 of a percentage point. Averaging three readings to the nearest half inch means the reported figure can only take values like 34.0, 34.5 or 35.0, so a man's result can only land on a grid of steps roughly one point apart.
That coarseness cuts both ways. It protects against a grader's unsteady hand, and it also means a soldier sitting half a point from their limit cannot measure their way out of trouble, because the next available reading is a full point away.
For women the same step is worth 0.635 of a point, so the grid they land on is about two thirds as coarse.
What Legitimately Changes the Reading
- Time of day. Take it at the same hour every time; a girth measured after a full day of eating and drinking is not comparable with one taken on waking.
- Fluid. A salty meal or a large volume of drink the night before can add girth at the abdomen, and the abdomen is the only site this test looks at.
- Breathing. Neither worksheet specifies a breathing phase, so choose one — relaxed, at the end of a normal breath out — and repeat it, or the readings are not comparable with each other.
- Posture. Standing straight with arms at the sides, rather than braced or leaning, is what keeps the tape horizontal.
None of that is a trick. It is the difference between a reading you can compare with the last one and a reading you cannot.
Limits: When This Estimate Does Not Apply
Two numbers cannot describe a body. The useful question is not whether the estimate is wrong but by how much, in which direction, and for whom.
How Accurate Is It Against a DXA Scan?
One published check on the one-site equation is a 2024 study in the British Journal of Nutrition. Florez and colleagues put 96 adults — 51 women and 45 men, mean age 23.7 years — through a DXA scan and through the Army equation. On average the two agreed almost exactly, with a constant error of 0.1 percentage points. The spread around that average was ±5.2 points.
An average error near zero with a five-point standard deviation is not a precise instrument. It is an instrument that is unbiased across a crowd and unreliable on any one person in it. The same study reported substantial proportional bias, with slope coefficients from −0.08 to −0.48, meaning the size of the error depends on how much fat there is to measure, so no single correction factor repairs it. Against a four-compartment reference model rather than DXA, the same equation ran 1.3 ± 4.8 points high.
Read that spread as the equation's own, not as the tape's. No tape was used: the abdominal girths came from a mobile three-dimensional imaging app, which builds an avatar from photographs taken as the subject turns in front of a phone camera and reads the circumference off it. Whatever a grader and a tape add on a drill floor is on top of the ±5.2 points, not inside it.
The sample matters too. Those 96 people were young adults with a mean BMI of 24.7, rather than a cross-section of an army.
If you have scan results and want to work from those instead of a tape, use our DEXA Body Fat Calculator.
It Is Poor at Tracking Change
A larger military study makes the sharper point. Foulis and colleagues followed 1,407 Army trainees — 481 women and 926 men — through eight weeks of Basic Combat Training, measuring by DXA and by circumference at both ends. Before training began, the tape estimates already sat 6.0 points below the scans for both sexes.
DXA then recorded real losses over the eight weeks: 4.0 ± 2.4 percentage points for the women and 3.3 ± 2.8 for the men. The circumference equations recorded 0.0 ± 3.3 for the women and −2.2 ± 3.3 for the men. For the women the tape saw no change at all where a scan saw four points go, and across the cohort it correctly classified only 56% of the women and 83% of the men as having gained or lost at least one point.
That study used the multi-site equations the Army was still running at the time — neck and abdomen for men, neck and waist and hips for women — not the one-site method on this page. It is evidence about circumference testing as a category, and the category contains both.
The Weight Term Points the Wrong Way
In both equations, gaining weight lowers your body fat percentage so long as the tape does not move. That is defensible as statistics, since a heavier body at a fixed waist is usually carrying more lean mass, and indefensible as advice.
The 25-year-old man at 185 lb and 35.0 inches reads 20.5%. Give him ten more pounds without an extra inch and he reads 19.3%. Nothing about him has become leaner; the equation has been told that a man this heavy with a waist this size must have more muscle underneath it.
The effect is small enough for women to ignore — ten pounds is 0.15 of a point — and large enough for men to be worth knowing about before reading anything into a one-point improvement that happened to coincide with a bulk.
Who This Is Not For
- Anyone under 17. The equation refuses the age outright rather than extrapolating.
- Pregnant and postpartum soldiers, who hold medical exemptions from body composition standards in any case.
- Anyone whose weight and waist sit well outside ordinary ranges. These are straight lines and they keep extrapolating past the point of sense, as the 7.9% in the male grid shows.
- Anyone preparing for a screening this year. The tape test is rescinded, and a waist-to-height ratio below 0.550 is what will actually be recorded.
What it remains good for is a consistent, zero-equipment number to watch across months, and a way to understand a percentage written on a DA Form 5500 before July 2026.
If the number needs to come down, that is calorie arithmetic before it is tape arithmetic — start with our Calorie Deficit Calculator.