Horse Weight & Body-Condition Estimator
Enter your horse’s girth and length to estimate weight, body condition score, and daily forage needs. Simple, fast, and useful for every horse owner.
Frequently Asked Questions
How do I measure heart girth correctly?
Wrap a soft tape around the horse’s barrel just behind the elbows and over the highest part of the withers. Keep the tape snug but not tight.
Where do I measure body length for this calculator?
Measure in a straight line from the point of shoulder to the point of buttock. Use the same measuring tape you used for girth.
How accurate is the weight estimate?
The formula is usually accurate within ±50 lb for light-horse breeds. Confirm with a livestock scale whenever possible.
Do ponies and draft horses use the same formula?
Ponies and drafts need different constants (299 for ponies, 241 for drafts). The calculator applies 330 for light horses.
What is a healthy body-condition score for most horses?
A BCS of 4–6 is ideal for adult riding horses. Performance and endurance horses may be closer to 4; broodmares 5–6.
How often should I check weight and BCS?
Monthly checks are recommended. Frequent monitoring helps you catch unwanted weight gain or loss early.
What if my horse scores 7 or higher?
Scores of 7–9 indicate excess fat and higher laminitis risk. Consult your vet to create a safe weight-loss plan.
Can I use this tool for growing foals?
You can, but foals grow quickly and have different body proportions. Use a livestock scale or vet visit for the most accurate foal weights.
Is this calculator a substitute for veterinary advice?
No. It’s an educational tool. Always consult a veterinarian before making nutrition or health decisions.