Cat Calorie Calculator

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How this works. We use the standard veterinary RER formula: RER = 70 × (weight_kg^0.75). Then we apply multipliers based on lifestyle and feeding goals.

FAQ

How accurate is this calculator?

It’s a fun, simplified estimate based on typical veterinary guidelines. Every cat is different, so always check with your vet for personalized advice.

Can kittens use this calculator?

Yes, but kittens grow quickly and often break the normal rules. For anything health-related, your veterinarian will give the most accurate guidance.

Does breed affect the results?

Yes. Some breeds mature faster or have longer average lifespans. These calculators give general estimates for most domestic cats.

How many calories should my cat eat per day?

It depends on weight, age, and lifestyle. This calculator uses standard resting energy (RER) formulas plus activity multipliers for indoor, outdoor, and weight-loss plans.

Do kittens need more calories?

Yes! Kittens need roughly double the calorie intake per body weight compared to adults because they grow rapidly.

Is dry food more calorie-dense than wet food?

Usually yes. Dry food often has more calories per gram. Your pet food’s label will list kcal/cup or kcal/can for accuracy.