How to Ace the Military’s New Waist-to-Height Ratio Test

The height/weight standards used in the military for decades to measure body composition were never able to distinguish between muscle mass and body fat. This is perhaps the biggest reason the military has made the universal change from measuring weight to measuring waist circumference. However, the new method does not do so, either, but maybe it is better?

The waist to height ratio (WHtR) is the new method adopted by all services in 2026.

Are there ways to improve both short- and long-term on this measurement test? Well, height is normally fixed unless a service member is still growing and in his/her late teens and early 20s, but some have temporarily added 0.2 to 0.8 inches when measured in the morning after a back stretch/manipulation. But gravity quickly brings you back down to regular size once you stand upright. The only way to truly help yourself on the new WHtR test is to lose inches around the waist.

To ace the WHtR test, your waist measurement must be less than half of your height. This means the ratio of your waist size to your height should ideally be under 0.55 if you are taking the official Department of Defense military body composition test.

Passing this test comes down to mastering the exact measurement technique and safely shrinking your waistline over time. While WHtR is better than BMI charts, it is not a perfect measure, either, as some people are just built differently and can pass the older height/weight charts, while shorter, broader people may fail the WHtR measure even though they are not overweight. This is why some branches of service still have the older system as a backup in case service members fail the new WHtR test.

If a military member in the Marine Corps, Air Force, Space Force or Navy exceeds the maximum WHtR screening limit, they undergo a secondary body fat evaluation using the multi-site tape test, bioelectrical impedance analysis (BIA) or, when available, a DEXA scan. As of 2026, there are no AFT/CFT high-score exemptions or secondary tests for the Army.

Short-Term Strategies for Test Day

While height is relatively fixed, bloating in the midsection can add 1 to 5 inches to circumference. This depends on gas buildup, water retention and food volume.

If your test is coming up very soon, add these habits a few days prior to the test, and perhaps prevent temporary bloat from expanding your waistline:

Avoid carbonated drinks, eating fast and drinking through straws. Fizzy beverages trap gas in your stomach and expand your midsection. Eating too fast and through a straw also allows air to enter the stomach.

Reduce sodium and high-fiber foods. Consuming salty foods/beverages causes water retention, while sudden spikes in high fiber can cause temporary bloating right before a test.

Stay hydrated. Drinking plenty of water helps your body flush out extra fluids stored in the waistline.

Avoid ultra-processed foods. These cause bloating and gas and are difficult to digest, as they typically take longer to break down and can cause gut inflammation. Instead, eat more potassium-rich foods such as bananas, avocados and apples to flush out excess salt and water.

Add pineapple and probiotics. Pineapple contains special enzymes that speed up digestion, and probiotic foods such as Greek yogurt build healthy gut bacteria that fight gas and bloating.

Be aware of food allergies and hormone changes. Some people do not realize they have mild allergies to certain foods (milk, wheat, etc.), which can cause stomach swelling. Also, monthly hormonal changes can add fluid weight in the midsection.

Long-Term Strategies to Shrink Your Waist

To permanently lower your ratio, you must reduce visceral fat, which is the deep belly fat stored around your organs. To do so:

Eat lean proteins. Focus on skinless poultry, fish, eggs and low-fat dairy. Lean protein helps you feel full and preserves muscle mass while you lose fat.

Cut down on added sugars. Sweets and sugary drinks turn directly into abdominal fat. Swap them for water or unsweetened tea.

Build daily movement. Combine strength training with steady cardio, such as jogging, brisk walking or weighted-vest walking, to burn calories and target fat loss.

Prioritize sleep. Getting less than seven hours of sleep raises stress hormones such as cortisol, which signals your body to store fat around your stomach.

Know your waistline is important for long-term health. One indicator of metabolic syndrome is waist measurement. A ratio of 0.55 or higher indicates an increased risk for cardiometabolic issues such as diabetes, high blood pressure and heart failure. While a simple and inexpensive health metric, it has drawbacks, including ignoring body-type differences, lacking age- or sex-specific categories in basic formulas, and being less precise than advanced scans.

How the WHtR Compares to Other Methods

Body Mass Index (BMI)

BMI does not measure fat distribution, whereas WHtR targets a common site of belly fat storage. However, like BMI, it cannot distinguish between heavy muscle and excess body fat. Some athletic body types carry more muscle around the core, which increases the waist measurement. However, WHtR remains more effective, as research shows it outperforms BMI in predicting cardiovascular risk.

Skinfold Calipers

Calipers measure specific fat sites directly, but they require a trained operator to avoid errors, and algorithms can be less accurate for some body types. WHtR is much easier to do at home and by less experienced measurers.

DEXA Scans

DEXA scans provide precise bone, muscle and fat measurements, but they cost money and require a clinic visit. WHtR is free and takes less time.

New fitness and health standards take time to fully implement in large organizations such as the U.S. military. Expect changes in testing methods and standards as the data continues to develop in these first few years. Until then, stretch your spine, and try to lose inches around your stomach by how you eat and drink and by burning more calories through daily movement.

See more training, sleep, and nutrition ideas at the Military.com Fitness Section to help you reach your goals.