Horse Body Condition Score (BCS) Guide: How to Score and Track Your Horse's Condition
The horse body condition score (BCS) rates how much fat your horse carries under the skin, on the Henneke scale from 1 (poor) to 9 (extremely fat), judged by looking at and feeling the neck, withers, behind the shoulder, back, ribs and tailhead. The Merck Veterinary Manual advises keeping most horses at a body condition score between 4 and 6 and considers 7 or more overweight. British charities use a 0 to 5 fat score instead, on which the British Horse Society calls 2.5 to 3 healthy.
Most owners carry their horse's score in their head. You think he's about a 6, maybe a 5 and a half since the clocks changed. The photos from last spring are somewhere in your camera roll between the dog and a hay invoice, each one taken from a different angle, and none of them records what your hands felt over his ribs that day. Then the barn says he has dropped weight since he moved to the winter field, you're sure he hasn't, and when you call the vet, the first question is the one neither of you can answer: compared to when?
The short version
- The US uses the Henneke scale from 1 to 9 (1983); British charities often use a 0 to 5 fat score.
- Most horses belong at 4 to 6 (Merck, University of Minnesota, Penn State, Purdue); 7 or more is overweight.
- Score with your hands over six areas, because fat is hard to judge by eye.
- Score every two weeks alongside a weight tape (BHS, Blue Cross, World Horse Welfare, British Equestrian).
On this page
What is the horse body condition score (BCS)?
The horse body condition score is a number for stored fat, not for weight: the University of Minnesota Extension describes body condition scoring as an evaluation of "the fat deposit under the horse's skin in six areas". In the US, the body condition score horse owners and vets typically use is the 1 to 9 Henneke scale, which Don Henneke developed as a graduate student at Texas A&M University and published with colleagues in the Equine Veterinary Journal in 1983. That first body condition score for horses was built for mares, and Purdue Extension describes it as a system designed to gauge reproductive efficiency in mares that can guide the judging of all horses.
Why tracking BCS matters for your horse
Tracking BCS matters because both ends of the scale carry health risks: Purdue Extension says scores lower than 4 or higher than 6 indicate the likelihood of metabolic and other health problems. Merck links obesity to laminitis, lipoma strangulation colic and decreased tolerance of exercise and heat, and very thin horses to poorer tolerance of stress and cold and more infections.
A series of scores tells you more than one score does, because in a British study of 191 laminitis cases and 819 controls, weight gain in the previous 3 months was one of the factors linked to a higher risk, and in an Australian study, owners rated their animals in significantly lower body condition than the researchers did. Weight alone won't tell you if this is appropriate for your horse, as World Horse Welfare puts it; our guide to how much a horse weighs covers weighing.
How to assess your horse's body condition score
To assess a horse's body condition score, look at and run your hands over six areas, judge the fat over each, and give one overall score from 1 to 9; Purdue Extension asks for both a visual appraisal and a manual appraisal.
The 6 key areas to feel and observe
The University of Minnesota names these six areas; the signs come from the Texas A&M chart, which cites Henneke 1983.
- Neck: blends smoothly into the body at a 5, carries fat along its sides from a 6, and is noticeably thicker at an 8.
- Withers: fat starts to collect along the sides from a 6.
- Behind the shoulder: fat starts to fill in from a 6.
- Back: a ridge along the spine at a 4, level at a 5, a slight crease at a 6 and an obvious crease at a 9.
- Ribs: a faint outline at a 4, easy to feel but not see at a 5, spongy fat at a 6, difficult to feel at an 8.
- Tailhead: fat beginning to feel spongy at a 5, soft at a 6 and bulging at a 9.
World Horse Welfare says it is "impossible to tell by eye how much fat a horse is carrying". Its fat scoring guide explains that fat feels soft and wobbles while muscle is firm, and that a hay belly is usually a full gut that shouldn't be scored, which is good news for every horse that comes in from the field looking a size bigger. A long winter coat can be misleading, and horses with equine metabolic syndrome (EMS) or Cushing's disease can carry fat in unusual places, according to the BHS.
On the Henneke scale you give one overall score rather than an average: Penn State Extension's example horse scores an 8 in five areas and a 4 in one and gets an 8, with a note about the uneven fat.
The Henneke horse body condition score chart
The Henneke horse body condition score chart runs from 1, an emaciated horse with no fat to feel, to 9, an extremely fat horse with a flank filled with fat; Merck, Minnesota, Penn State and Purdue call 4 to 6 ideal for most horses.
Understanding the 1 to 9 scale
Descriptions are shortened from Texas A&M; the last column is the Merck Veterinary Manual's verdict for each score.
| Score | Henneke name | What you see and feel | Merck's verdict |
|---|---|---|---|
| 1 | Poor | Extremely emaciated; spine, ribs, tailhead and hip bones stand out; no fat to feel | Unacceptable under any circumstance |
| 2 | Very thin | Emaciated; slight fat over the base of the spine | Unacceptable, may be due to illness |
| 3 | Thin | Slight fat over the ribs; spine and ribs easy to see | Not desirable for optimal health |
| 4 | Moderately thin | Ridge along the back; faint outline of the ribs | May be acceptable, especially for racing |
| 5 | Moderate | Level back; ribs easy to feel but not seen | Acceptable for all |
| 6 | Moderately fleshy | Spongy fat over the ribs; fat starting on withers, shoulders and neck | Acceptable upper limit; ideal for broodmares |
| 7 | Fleshy | May have a crease down the back; fat between the ribs | Unacceptable; obese, body fat over 20% |
| 8 | Fat | Crease down the back; ribs difficult to feel; thicker neck | Obese, higher risk of metabolic disease and laminitis |
| 9 | Extremely fat | Obvious crease; bulging fat at tailhead, withers, shoulders and neck | Morbidly obese, higher risk of laminitis and colic |
Horse body condition score 3 and below: when to involve your vet
A horse body condition score 3 is "Thin", with the ribs and spine still easy to see, and Merck calls it not desirable for optimal health; at 1 or 2 it warns of refeeding problems. The Association for Pet Obesity Prevention (APOP) lists inadequate feed intake, dental disease, parasites, pain, or chronic illness among the causes of a falling score, and Michigan State University said in 2013 that a thin horse calls for your veterinarian or a nutritionist.
The UK 0 to 5 fat score
The UK fat score runs from 0 (emaciated) to 5 (obese), and the BHS calls 2.5 to 3 healthy unless your vet advises otherwise. World Horse Welfare's guide has you score the neck and shoulder, the back and barrel, and the hindquarters, then take an average, with half scores allowed. No source we checked gives an official conversion between the two scales, so use the one your vet or barn uses and stay with it.
Horse weight management and feeding guidelines by body condition score
Horse weight management follows the score: for an overweight horse the Merck Veterinary Manual builds the diet around its current weight with frequent weigh-ins, and for a thin horse it adds calories slowly after finding out why the horse is underweight. Your vet or an equine nutritionist sets the amounts; our guide to how much hay a horse needs covers the basics.
Feeding adjustments based on BCS
These horse feeding guidelines come from the Merck Veterinary Manual (reviewed February 2026) and a 2011 University of Kentucky seminar.
| Score | What the sources suggest |
|---|---|
| 7 to 9 | A forage diet without grain, plus a vitamin and mineral supplement, less pasture and a grazing muzzle for most of the day (Kentucky); adjust weekly or every two weeks, and never fast the horse for 24 hours or more (Merck) |
| 4 to 6 | Keep what works; Merck treats published calorie figures as only a starting point, because some horses need far more feed than others |
| Below 4 | Find the cause first, then offer better-quality forage, slowly add a high-fat concentrate or oil, and reduce exercise (Merck); have the teeth checked (Kentucky) |
| 1 to 2 | Refeeding follows a protocol under veterinary monitoring (Merck) |
Both directions are slow. Merck expects an overweight horse to lose 0.5 to 1% of its body weight a week, says the score may take several weeks or months to change, and allows 30 to 90 days for a thin horse to gain 50 pounds (22.7 kg).
A new diet also only works if everyone who feeds your horse knows about it. At a busy barn, the change lives in a text to the barn manager, the weekend helper still measures out the old scoop, and nobody can say whether the grain stopped on Monday or on Thursday.
Exercise and environmental factors
Breed, age, workload and season all move the score; Merck names draft horses, warmbloods, some Morgans, Quarter Horses and most ponies as easy keepers, and Thoroughbreds and related breeds as hard keepers. Among Pony Club horses and ponies in Victoria, Australia, researchers found 71.5% of Shetlands obese against 9.3% of the horses. Merck suggests a score of 5 to 6 for light and moderate work and 4 to 5 for heavy and very heavy work, such as endurance riding or race training. Michigan State noted in 2013 that older horses have a more difficult time gaining weight, and a 2011 Kentucky seminar added that horses normally lose weight in the winter and gain in spring, summer, and fall.
Simplify equine health tracking with Halster
Score your horse every two weeks alongside a weight tape, as the BHS, Blue Cross, World Horse Welfare and British Equestrian advise; Halster keeps those photos, notes, weigh-ins and the feed plan together for each horse.
Log your horse's condition and feed plans in one place
Ohio State recommends photographic and written records of each evaluation. We found no US source with a fixed interval; APOP says to check regularly and record the score, especially around changes in season, pasture or workload. Our advice is to score on the same day every two weeks, on the same scale, and to take the photo from the same side in similar light.
In Halster, keep a dated photo and note of each condition check in your horse's Journal. You can share a Report for the vet as a PDF with health information and daily care.
More questions about horse body condition scores
Is a body condition score of 6 too fat?
Not for most sources: Merck calls 6 the acceptable upper limit, and Minnesota, Penn State and Purdue include it in the ideal range. APOP is stricter and says a 6 or higher means more fat cover than the usual ideal.
What body condition score should a broodmare have?
Sources range from 5 to 6 (Merck) to 6 to 7 for pregnant mares (Penn State), so set the target with your vet.
Is there a 1 to 10 horse body condition score?
We found no common 1 to 10 scale for horses from an authoritative source; the scales in use are Henneke's 1 to 9 and the UK's 0 to 5. Purina's chart uses the same nine Henneke names.
