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Cat Calorie Calculator

How Cat Calorie Calculator Works

RER = 70 × (body weight in kg)^0.75, then multiply by activity factor

This calculator determines your cat's daily energy needs based on weight, activity level, body condition, and neuter status using the Resting Energy Requirement formula.

  1. 1

    Step 1

    Enter your cat's weight in kilograms

  2. 2

    Step 2

    Select the activity level that best describes your cat

  3. 3

    Step 3

    Choose the body condition score

  4. 4

    Step 4

    Indicate if your cat is neutered or spayed

  5. 5

    Step 5

    View daily calorie and macronutrient recommendations

Use Cases

Managing your cat's weight through proper portion control

Planning diet for weight loss or weight gain

Adjusting calories for different activity levels

Understanding nutritional needs after neutering

Tips

  • 1

    Neutered cats need 20-30% fewer calories

  • 2

    Measure food portions accurately with a kitchen scale

  • 3

    Divide daily calories across multiple small meals

  • 4

    Account for treats in the daily calorie budget

  • 5

    Reassess calorie needs as cats age

Common Mistakes

  • Free-feeding cats without measuring portions

  • Not reducing calories after neutering

  • Ignoring treat calories in daily totals

  • Using the same calories for all life stages

FAQs

How many calories does an average cat need?

An average 4kg adult cat needs about 200-250 calories per day. This varies based on activity level, age, and whether the cat is neutered.

Should I reduce calories for a neutered cat?

Yes, neutered cats have lower metabolic rates and need 20-30% fewer calories to maintain a healthy weight.

How do I know if my cat is overweight?

You should be able to feel your cat's ribs easily without pressing hard. From above, your cat should have a visible waist. Consult your vet for a body condition assessment.

What percentage of calories should come from protein?

Cats are obligate carnivores and need 30-45% of their calories from protein. Animal-based proteins are essential for their health.

Do indoor cats need fewer calories?

Generally yes. Indoor cats are typically less active and may need 10-20% fewer calories than outdoor cats to prevent weight gain.

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