How is the Navy waist measured?

Horizontally at the navel while relaxed and exhaling normally, rounded down to the nearest half-inch.

⚓ Navy Body Fat Calculator (2026 BCA)

Q: What is the Navy waist-to-height ratio standard for 2026?

0.5499 or lower — waist at the navel divided by height, the same for every Sailor. At or below 0.5499 you are within standards and skip the body fat measurement.

Q: What happens if my ratio is 0.5500 or higher?

You complete Step 2, a body fat estimate from the official Navy tables using height-minus-waist and weight. You pass if body fat is at or below 26% (men) or 36% (women).

Q: Does the Navy still use a height and weight chart?

No. Under OPNAVINST 6110.1L the maximum-weight-for-height chart was removed. Body composition is determined by the waist-to-height ratio, then body fat tables only if exceeded.

Check your Navy body composition against the new 2026 Body Composition Assessment — the official waist-to-height ratio screen (WHtR ≤ 0.5499) plus the exact Navy body fat tables from Guide-4.

Step 1 — Waist-to-Height Ratio Screen

Sex

Height (inches)

Waist at navel (inches)

Weight (lbs)

Step 1 — Waist-to-Height Ratio

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Step 2 — Estimated Body Fat

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💡 Pro-Tip: Under the 2026 BCA your weight alone never fails you — Step 1 is purely your waist divided by your height. If that ratio is 0.5499 or lower you're done, no body fat measurement required. The waist is taken at the navel and rounded down to the nearest half-inch, so exhaling fully on tape day is worth real fractions of an inch.

How the 2026 Navy Body Composition Assessment Works

Approved December 29, 2025 (OPNAVINST 6110.1L) and effective January 1, 2026, the Navy replaced its old height/weight tables with a two-step Body Composition Assessment built around a sex-neutral waist-to-height ratio (WHtR). Step 1 divides your waist circumference at the navel by your height. If the result is 0.5499 or lower, you're within standards and no body fat measurement is required. Only Sailors at 0.5500 or higher move to Step 2, where estimated body fat is read from the official Guide-4 tables using your height-minus-waist difference and your weight — this calculator embeds those exact tables.

Maximum Waist by Height (WHtR ≤ 0.5499)

Height	Max Waist	Height	Max Waist
5'4" (64")	35.0"	5'10" (70")	38.0"
5'6" (66")	36.0"	6'0" (72")	39.5"
5'8" (68")	37.0"	6'2" (74")	40.5"
5'9" (69")	37.5"	6'4" (76")	41.5"

Navy Body Fat Limits (Retention Standard, Guide-4)

Standard	Men	Women
Maximum body fat	26%	36%
Minimum body fat	18%	26%

If your Step 2 body fat is at or below the maximum for your sex, you pass the BCA. Preparing for the run and events too? Score them with our Navy PRT Calculator, and compare the Marine Corps version with the USMC Body Composition Calculator.

Frequently Asked Questions

What is the Navy waist-to-height ratio standard for 2026?

0.5499 or lower — your waist at the navel divided by your height, the same standard for every Sailor regardless of sex. At or below 0.5499 you're within standards and skip the body fat measurement.

What happens if my ratio is 0.5500 or higher?

You complete Step 2, a body fat estimate read from the official Navy tables using your height-minus-waist difference and your weight. You pass the BCA if that body fat is at or below 26% for men or 36% for women.

Does the Navy still use a height and weight chart?

No. As of OPNAVINST 6110.1L the old maximum-weight-for-height chart was removed. Body composition is now determined entirely by the waist-to-height ratio, and only if you exceed it, the body fat tables.

How is the waist measured?

Horizontally at the navel while standing relaxed and exhaling normally, then rounded down to the nearest half-inch. Because it's rounded down, a fraction of an inch can decide whether you clear the 0.5499 screen.