📋 Health Information · Editorial Team
Body Fat Percentage Guide
The scale cannot tell fat from muscle. This guide covers healthy body fat ranges for men and women, how each measurement method works, and which numbers actually matter.
Medical disclaimer: This article is general information, not medical advice. Body fat percentage is one screening measure among many. Speak to your GP for a personal assessment, especially before pursuing very low body fat levels or if you have a history of disordered eating.
What Is Body Fat Percentage?
Body fat percentage is the share of your total body weight that is fat tissue. It splits into essential fat, the fat your organs, nerves, and bone marrow need to function (about 3% of body mass for men, about 12% for women), and storage fat, the energy reserve that rises and falls with diet and activity.
Two people can weigh exactly the same, say 13 stone, and look completely different, because one carries 15% body fat and the other carries 30%. That is why percentage tells you more about health and fitness than weight alone. It also explains why muscle and fat weigh differently in volume and why BMI misclassifies muscular people.
Body Fat Percentage Chart (Men and Women)
The classification below follows the widely used Lohman-style bands taught in sports nutrition. Ranges drift upward with age: adults over 40 typically sit 2 to 4 percentage points higher than adults in their twenties at the same fitness level.
| Rating | Men | Women |
|---|---|---|
| Athletic | 5 - 10% | 8 - 15% |
| Good (fit) | 11 - 14% | 16 - 23% |
| Acceptable (healthy) | 15 - 20% | 24 - 30% |
| Overweight | 21 - 24% | 31 - 36% |
| Obese | 25%+ | 37%+ |
Women naturally carry more body fat than men because of reproductive and hormonal function, so the bands are offset by roughly 10 percentage points. These are population guides, not personal prescriptions. A woman at 32% who trains regularly and has healthy blood pressure, blood sugar, and cholesterol is in a different position from someone at 32% who is sedentary.
Where fat sits matters too. Visceral fat around the abdomen drives more disease risk than subcutaneous fat. Combine your body fat estimate with our waist to height ratio guide for a fuller picture.
How to Measure Body Fat Percentage
DEXA scan (most accurate)
Dual-energy X-ray absorptiometry separates fat, lean mass, and bone in one scan. It is the closest thing to a practical gold standard and is available at private clinics across the UK, usually for £50 to £150. If you want one reliable number, this is it.
Skinfold calipers (good in trained hands)
A trained practitioner pinches skinfolds at standard sites (chest, abdomen, thigh for men; triceps, thigh, hip for women) and plugs the results into the Jackson-Pollock equations. Accuracy depends heavily on the measurer's skill, so get it done by the same trained person each time.
Smart scales / BIA (best for trends)
Bioelectrical impedance scales send a small current through your body and estimate fat from resistance. The reading can shift several percentage points with hydration, meals, and time of day. Measure first thing in the morning under the same conditions and watch the trend line, not any single reading. Our smart scale accuracy guide covers this in detail, and if you're shopping for one, see our roundup of the best scales for body fat.
Tape measure methods (free and decent)
The US Navy method uses waist, neck, and height (plus hips for women) to estimate body fat within a few percentage points of DEXA for most people. It costs nothing and pairs well with the waist to height ratio as a home tracking system.
How to Lower Body Fat Percentage Safely
Lowering body fat percentage is not the same as lowering weight. The goal is to lose fat while keeping muscle, which is what actually moves the percentage down:
- Moderate deficit: aim for 0.5 to 1 kg (1 to 2 lb) per week, the NHS rate
- Protein: around 1.2 to 1.6 g per kg of body weight daily to protect muscle
- Strength training: two to three sessions weekly, the single biggest protector of lean mass
- Measure monthly, not daily, body composition changes slowly
Frequently Asked Questions
What is a healthy body fat percentage?
For adult men, a healthy range is roughly 10 to 20%, and for adult women roughly 20 to 29%, rising slightly with age. Athletes run lower (6 to 13% for men, 14 to 20% for women). Ranges vary by age, genetics, and activity level, so treat these as guides, not personal targets.
What body fat percentage is considered obese?
In commonly used classification tables, body fat above 24 to 25% for men and above 37 to 38% for women falls in the obese range. The overweight bands sit roughly at 21 to 24% for men and 31 to 36% for women.
Are smart scales accurate for body fat percentage?
They give estimates, not precise measurements. Bioelectrical impedance scales can swing several percentage points with hydration, food, and time of day. They are useful for tracking trends if you measure under consistent conditions, but not for diagnosing your exact percentage.
What is the most accurate way to measure body fat?
DEXA scans are the most practical gold standard available to the public, measuring fat, lean mass, and bone separately. Hydrostatic (underwater) weighing is also very accurate but hard to access. Skinfold calipers are decent when used by a trained professional.
Can body fat percentage be too low?
Yes. Essential fat is about 3% of body mass for men and about 12% for women, and dropping near these levels can disrupt hormones, immunity, and bone density. In women, very low body fat can stop menstrual cycles.