Army body fat calculator (2026 waist-to-height standard)
Army body fat standard for 2026: your waist-to-height ratio, pass or fail against 0.55 (AD 2026-13), the largest passing waist for your height and margin.
Existing medical exemptions from body composition standards still apply to pregnant and postpartum soldiers (Army ABCP FAQ, July 2026).
At a recorded height of 70 in, an average waist of 37.667 in gives a ratio of 0.538, which meets the Army standard of below 0.550. The largest passing waist at this height is 38 in, 0.33 in above your average.
Ratio against the 0.55 standard
Largest passing waist by height
Largest passing waist0.55 × height (fails)
Largest passing waist by height (the Figure B–1 rule) Rows: 13
Height
cm
Largest passing waist (in)
cm
Ratio at that waist
67.0 in
170.2
36.5
92.7
0.544
67.5 in
171.4
37
94
0.548
68.0 in
172.7
37
94
0.544
68.5 in
174
37.5
95.2
0.547
69.0 in
175.3
37.5
95.2
0.543
69.5 in
176.5
38
96.5
0.546
70.0 in (you)
177.8
38
96.5
0.542
70.5 in
179.1
38.5
97.8
0.546
71.0 in
180.3
39
99.1
0.549
71.5 in
181.6
39
99.1
0.545
72.0 in
182.9
39.5
100.3
0.548
72.5 in
184.2
39.5
100.3
0.544
73.0 in
185.4
40
101.6
0.547
How it's calculated S
Record height to the nearest half inch
70in→70.0in
EXORD 182-26 Annex A: measured in socks, rounded to the nearest half inch.
Round each waist reading down to the half inch
37.5→37.5,38→38.0,37.5→37.5
Annex A: waist measurements are always rounded down to the nearest 0.5 inch.
Average waist
337.5+38.0+37.5=37.6667in
Divide by height and cut to three decimals
70.037.6667=0.538095→0.538
Table B–1: the ratio is recorded to three decimals and digits after the third are dropped, never rounded (0.549888 is recorded as 0.549).
Compare with the standard
0.538 is below 0.550, so it meets the AD 2026-13 standard.
Largest passing waist at this height
0.55×70.0=38.5in→38.0in
The largest half-inch waist strictly below 0.55 × height; the same rule produces the Army's Figure B–1 table.
About the Army body fat calculator
Since July 2026 the Army's body composition standard is a waist-to-height ratio (WHtR) below 0.55, set by Army Directive 2026-13. It replaced the height and weight screening tables and the one-site abdominal tape test for body fat. The waist is measured at the navel three times, each reading rounded down to the nearest half inch; height is rounded to the nearest half inch; the average waist is divided by height and the ratio is cut, not rounded, to three decimals.
Soldiers use it to check where they stand before a record measurement, which happens at least twice a year. At 70 inches tall the largest passing waist is 38 inches, a ratio of 0.542; 38.5 inches gives exactly 0.550 and fails. The same limits appear in Figure B–1 of the Army's implementing guidance, EXORD 182-26 Annex A.
The standard is the same for men and women at every age. A ratio of 0.550 or more after a same-day confirmation by a second team means enrollment in the Army Body Composition Program and a flag.
What is the Army body fat standard in 2026?
Since July 2026 the Army measures body composition with a waist-to-height ratio instead of body fat: the average waist at the navel divided by height, cut to three decimals, must be below 0.550. At 70 inches tall, a 38-inch waist gives 0.542 and passes; 38.5 inches gives exactly 0.550 and fails.
The standard comes from Army Directive 2026-13 and is the same for men and women at every age. The result is a ratio, not a body fat percentage.
Height, measured in socks, is rounded to the nearest half inch: 70.25 inches becomes 70.5.
Each waist reading, taken at the navel, is rounded down to the half inch: 38.49 inches becomes 38.0.
Three readings are averaged.
The ratio is the average waist ÷ height, cut to three decimals and never rounded up: 0.549888 is recorded as 0.549.
For readings of 37.5, 38 and 37.5 inches at 70 inches tall, the average is 37.667 inches. 37.667 ÷ 70 = 0.5381, recorded as 0.538, which meets the standard.
Metric measurements are converted to inches first. At 178 cm (70.08 inches, recorded as 70.0), waist readings of 97, 97 and 97.5 cm all round down to 38.0 inches, for a ratio of 0.542.
Maximum waist for your height
The largest passing waist is the largest half-inch value whose ratio stays below 0.55. These match Figure B-1 of Annex A:
60 inches: 32.5 inches
62 inches: 34 inches
64 inches: 35 inches
66 inches: 36 inches
68 inches: 37 inches
70 inches: 38 inches
72 inches: 39.5 inches
74 inches: 40.5 inches
76 inches: 41.5 inches
When 0.55 × height lands exactly on a half inch, that waist fails and the limit drops half an inch. At 60 inches, 0.55 × 60 = 33.0, so the largest passing waist is 32.5; at 70 inches, 38.5 fails and 38 passes.
When a fourth waist reading is taken
If one of the three readings differs by more than 1 inch from the other two, Annex A calls for a fourth. The three closest readings are then averaged, and that average is itself rounded to the nearest half inch.
That last rounding can decide the result. Readings of 38, 38.5, 43 and 38.5 inches at 70 inches tall keep 38, 38.5 and 38.5. Their average of 38.333 is recorded as 38.5, a ratio of exactly 0.550, which fails.
The same three readings taken without a fourth average 38.333 unrounded, for a ratio of 0.547, which passes. A soldier above the half-inch table value can still pass on an ordinary three-reading average.
What changed in 2026
The ratio replaced body fat. Army Directive 2026-13 discontinued the height and weight screening tables and rescinded the one-site abdominal tape test of Army Directive 2023-11 (Army announcement).
No tape-test appeal. A failed first measurement is confirmed by a different team on the same duty day; a tape test or other body fat assessment cannot overturn it.
No AFT exemption. The directive rescinded Army Directive 2025-17, so no Army Fitness Test score exempts a soldier, and units leave at least 7 days between an AFT or Combat Field Test and the measurement.
Existing medical exemptions remain, including those for pregnant and postpartum soldiers (Army FAQ).
A confirmed ratio of 0.550 or more means enrollment in the Army Body Composition Program and a flag. No soldier is separated for failing until the Army completes its 180-day assessment of the standard.
Three worked cases
Default: 70 inches tall, readings of 37.5, 38 and 37.5 inches.
Exact failure boundary: 70 inches, three readings of 38.5 inches.
Fourth rounding decides: 70 inches, readings of 38, 38.5, 43 and 38.5 inches.
Averages keep three decimals.
Scenario
Applicable average (in)
Recorded ratio
Numerical comparison
Default
37.667
0.538
Meets the standard
Exact failure boundary
38.500
0.550
Does not meet the standard
Fourth rounding decides
38.500
0.550
Does not meet the standard
Common measuring mistakes
Rounding a waist reading to the nearest half inch. Waist readings always round down, so 38.4 inches counts as 38.
Rounding the ratio. 0.5499 is recorded as 0.549 and passes; it never becomes 0.550.
A loose or tight tape. The tape should be level with the floor and snug on the skin without compressing it.
Checked against: EXORD 182-26 Annex A Figure B–1: height 70 in, max waist allowed 38 in, resulting ratio 0.542
Boundary: 70 in tall, waist 38.5 in gives 0.550
Height (in socks)
70 in
Waist at the navel, reading 1
38.5 in
Reading 2
38.5 in
Reading 3
38.5 in
Waist-to-height ratio (as recorded)
0.550
Army standard (AD 2026-13)
Does not meet the standard
Margin to the largest passing waist
-0.5 in
Checked against: 38.5 / 70 = 0.55 exactly; Annex A Table B–1: “WHtR of 0.550 does not meet the standard”
Truncation: 51 in tall, waist 28 in
Height (in socks)
51 in
Waist at the navel, reading 1
28 in
Reading 2
28 in
Reading 3
28 in
Waist-to-height ratio (as recorded)
0.549
Army standard (AD 2026-13)
Meets the standard
Largest passing waist at this height
28.0 in
Checked against: Figure B–1: 51 in → 28 in, ratio 0.549 (28 / 51 = 0.54902, cut to 0.549 as in Table B–1's 0.549888 → 0.549 example)
64.5 in tall, waist 35 in
Height (in socks)
64.5 in
Waist at the navel, reading 1
35 in
Reading 2
35 in
Reading 3
35 in
Waist-to-height ratio (as recorded)
0.542
Largest passing waist at this height
35.0 in
Checked against: Figure B–1: 64.5 in → 35 in, ratio printed as 0.5426 (35 / 64.5 = 0.54264), recorded as 0.542
Questions
What is the Army body fat standard in 2026?
A waist-to-height ratio below 0.55, for all soldiers regardless of age or sex. Army Directive 2026-13 (July 2026) made the ratio the only authorized body composition measure and dropped body fat percentages. The ratio is recorded to three decimals without rounding, so 0.549 meets the standard and 0.550 does not. The directive also covers USMA and Senior ROTC cadets.
Does the Army still use the tape test?
No. Army Directive 2026-13 rescinded Army Directive 2023-11, which had introduced the one-site abdominal tape test for body fat in June 2023, and discontinued the height and weight screening tables. The directive also bars any tape test or other body fat assessment as a way to challenge a failed waist-to-height ratio; a failed first measurement gets a confirmation by a different team on the same duty day instead.
What is the maximum waist size for my height in the Army?
The largest half-inch waist that keeps the ratio below 0.55. From the Army's Figure B–1 table: 64 inches tall allows 35 inches, 66 inches allows 36, 68 inches allows 37, 70 inches allows 38 and 72 inches allows 39.5. Height is rounded to the nearest half inch first, and each waist reading is rounded down, so a reading of 38.4 inches counts as 38.
Does a high AFT score exempt soldiers from body composition standards?
Not any more. Army Directive 2025-17 (September 2025) had exempted soldiers who scored 465 or more on the Army Fitness Test with at least 80 points in each event. Army Directive 2026-13 rescinded it and states that no AFT score exempts a soldier from the waist-to-height standard. Units must leave at least 7 days between an AFT or Combat Field Test and the measurement.
For information only, not medical advice. These formulas describe populations, not you; talk to a clinician before acting on a result.
Checked against references
This calculator includes 8 worked examples with independently sourced answers. They run in the test suite, and you can run them here too.
Put this calculator on your site
Paste this where you want the calculator to appear. It is free to use, it stays in step with corrections made here, and the credit line below it links back so your readers can find the full version.