Estimate Horse Weight with a Tape Measure
Estimate your horse weight using heart girth and body length measurements. No livestock scale needed.
The Weight Tape Formula
Horse weight = (Heart Girth² × Body Length) ÷ 330, where both measurements are in inches. Heart girth: Measure around the barrel just behind the front legs, at the deepest part of the chest. Body length: From the point of the shoulder to the point of the buttock (ischial tuberosity). This formula is accurate to within ±5% for most horses when measured correctly — close enough for feeding and deworming calculations.
Why Accurate Weight Matters
Knowing your horse weight is essential for: Feeding: Horses should eat 1.5-2.5% of body weight daily in forage. A 1,100 lb horse needs 16-28 lbs of hay per day. Medication: Dewormer, bute, and other medications are dosed by weight — underdosing is ineffective, overdosing is dangerous. Health monitoring: Sudden weight changes (5%+ in a month) can indicate illness, dental problems, or parasites.
Horse weight calculator has a small but dedicated niche audience (10K/mo searches). Horse owners are high-value consumers — average annual spending per horse is $3,500-10,000. Equine supply advertisers (SmartPak, Dover Saddlery) are willing to pay $5-12 CPC for this audience.
