How many calories does my dog need per day?

Resting energy requirement (RER) is 70 × (weight in kg)^0.75. Maintenance needs (MER) are typically 1.2–2.0× RER for neutered pets, higher for active or intact dogs. Puppies and medical conditions need individual vet advice.

Can I use this to put my dog on a diet?

No — weight-loss plans need your vet to set a safe calorie target and monitor progress. This calculator is for maintenance estimates in healthy adult dogs only.

Quick answer

The free PETHEALTH+ dog calorie calculator estimates a daily kcal range using RER (70 × kg^0.75) and activity multipliers. It is a starting point only — confirm portions and complete diet choice with your vet, especially for puppies, seniors or weight management.

Dog calorie calculator

Estimate how many kilocalories (kcal) a healthy adult dog needs each day. This is a guide only — your vet should confirm portions, especially for puppies, nursing bitches, seniors or weight-loss plans.

Based on WSAVA-style RER/MER formulas used in veterinary nutrition. Not a substitute for veterinary advice. See our dog obesity guide and food safety hub.

Frequently Asked Questions

How many calories does my dog need per day?: Resting energy requirement (RER) is 70 × (weight in kg)^0.75. Maintenance needs (MER) are typically 1.2–2.0× RER for neutered pets, higher for active or intact dogs. Puppies and medical conditions need individual vet advice.
Can I use this to put my dog on a diet?: No — weight-loss plans need your vet to set a safe calorie target and monitor progress. This calculator is for maintenance estimates in healthy adult dogs only.