Rabbit Breed Size & Ideal Weight Calculator

What This Calculator Does

This rabbit weight and breed size calculator checks your bunny’s current scale weight against official American Rabbit Breeders Association (ARBA) breed standards. Identifying whether your rabbit is within a healthy weight range is essential for preventing obesity and preserving mobility.

How to Use This Calculator

Select your rabbit’s breed category—from compact dwarf breeds under 1.8 kg (4 lbs) to giant breeds over 5 kg (11 lbs)—and enter their scale weight. The calculator compares their weight to standard breed thresholds and provides practical daily feeding guidelines for hay and pellet portions.

Key Factors That Affect the Result

• Rabbit breed classifications range from Dwarf (such as Netherland Dwarfs and Holland Lops) to Giant (like Flemish Giants and French Lops).
• Body condition scoring (palpating the spine, ribs, and hip bones under a thin layer of muscle) provides a critical check alongside scale weight.
• High-fiber grass hay (Timothy, orchard grass, or meadow hay) must make up at least 80% to 85% of an adult rabbit’s daily intake to ensure constant gut motility and dental wear.
• Concentrated pellets and sugary fruit treats should be strictly portioned according to adult body weight to prevent cecal dysbiosis.

Why This Matters for Your Rabbits

Obesity in pet rabbits is a primary contributor to hepatic lipidosis, sore hocks (pododermatitis), arthritis, and inability to groom the perineum to ingest essential cecotropes. Keeping your rabbit at an optimal weight supports digestive vitality and long-term health.