Safe Mount Calculator

The calculator uses the 20% rule, which is a widely accepted guideline in the equine industry. A horse should carry no more than 20% of its body weight, including the rider and all tack. This ensures the horse’s comfort and long-term health.

Based on the weight you enter, the calculator works out the minimum horse weight needed and lists the breeds that can carry it. To stay on the safe side, each breed is judged by the lighter end of its typical weight range, and the “can carry” figure shows 20% of that range.

Several factors influence how much weight a horse can safely carry: the horse’s breed and conformation, fitness level, age, bone density, back length and strength, and the terrain being ridden. Draft breeds and stocky horses typically have higher weight capacities than lighter breeds.

Exceeding the 20% limit can cause physical strain, back problems, lameness, and behavioral issues in horses. Studies have shown that horses carrying more than 20% of their body weight show increased heart rates, breathing rates, and muscle soreness. Following this guideline helps ensure your horse stays healthy and comfortable.

Yes, tack weight should be included in the total weight calculation. A western saddle typically weighs 25–50 lbs, while an English saddle weighs 10–25 lbs. Adding bridles, pads, and other equipment, you should account for 15–60 lbs of tack depending on your riding style.