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Free dog calorie calculator for resting energy (RER) and a maintenance-style (MER) estimate from weight and life stage—useful for comparing bags and cans to a daily kcal budget. Always confirm with your veterinarian. See our cat calorie calculator for felines.
Last updated: April 18, 2026
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Small dogs to giant breeds—use a recent scale weight.
Estimate
About 727 kcal/day resting need (RER) × 1.6 (Adult neutered (maintenance)) → roughly 1164 kcal/day as a maintenance-style estimate (MER).
Weight (kg)
22.7
RER
727 kcal/day
Factor
× 1.6
MER (style)
1164 kcal/day
Adult neutered (maintenance)
RER estimates resting metabolism at a given body weight. It is often the first line before life-stage and activity adjustments.
MER applies multipliers for growth, neuter status, workload, and reproduction. Clinics may customize factors for your dog’s body condition score.
50 lb, adult neutered → about 727 kcal/day RER and roughly 1164 kcal/day MER-style.
We convert your dog’s weight to kilograms, compute RER as 70 × kg^0.75, then multiply by a life-stage or activity factor to approximate a daily calorie budget. Factors follow common textbook-style ranges and may differ from your veterinarian’s preferred chart. Use the result alongside food label kcal and professional guidance. More fitness & lifestyle tools are on the hub.
RER (kcal/day) ≈ 70 × (weight_kg)^0.75
MER (kcal/day) ≈ RER × life_stage_factor
Tracking your own intake? Try the calorie calculator.
Get Custom Calculator for Your PlatformIf kcal per cup is 400, about 2.5 cups per day matches 1,000 kcal—split into meals and adjust with your vet’s plan.
Budget treats inside the daily kcal total; training rewards add up quickly for small dogs.
Share it with other dog owners planning feeding with their vet.
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