Dog Calorie Calculator
Find out exactly how many calories your dog needs each day. Our calculator uses the veterinary-standard RER/DER formula, adjusted for your dog’s life stage and activity level.
All fields are required for an accurate result. Takes under 30 seconds.
*Cups estimate: Based on ~350 kcal/cup (average dry kibble). Actual serving size depends on your specific food’s caloric density — always check the label or use our Feeding Calculator for precision.
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Veterinary Disclaimer
This calculator is intended for informational purposes only and does not constitute veterinary advice. Individual dogs have unique nutritional needs based on their health status, underlying conditions, and specific metabolic rate. Results represent general estimates using the widely accepted RER/DER formula (AAFCO/NRC standards). Always consult a licensed veterinarian or board-certified veterinary nutritionist before making significant changes to your dog’s diet, especially if your dog has a medical condition, is pregnant, nursing, or is significantly overweight or underweight.
| Life Stage | Multiplier |
|---|---|
| Puppy < 4 mo | ×3.0 |
| Puppy 4 mo–1 yr | ×2.0 |
| Intact adult | ×1.8 |
| Neutered adult | ×1.6 |
| Less active | ×1.4 |
| Weight loss | ×1.0 |
| Weight gain | ×1.7 |
| Senior (7+) | ×1.4 |
| Pregnant | ×3.5 |
| Nursing | ×4.8 |
RER formula: 70 × (weight_kg)^0.75 — the foundation of all vet nutrition calculations.
Neutered dogs typically need 15–20% fewer calories than intact dogs of the same size.
Weight loss: Reduce by no more than 1–2% of body weight per week. Faster loss can cause muscle loss.
Senior dogs often need fewer calories but higher-quality protein to maintain muscle mass.
Track your dog’s weight over time, log meals, and get smart alerts when calorie needs change.
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