How does the Cat Food Calculator work?

Calculate Resting Energy Requirement (RER): 70 × (body weight in kg)^0.75 Then: Multiply RER by life stage factor: kitten ×2.5, neutered adult ×1.2, intact adult ×1.4, senior ×1.1 Then: Convert to food quantity: kcal target ÷ kcal per gram of food.

Can you give an example of how to use the Cat Food Calculator?

Example: Input 4kg neutered adult cat gives a result of ~230 kcal/day (70 × 4^0.75 × 1.2 = ~230 kcal).

Is the Cat Food Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Cat Food Calculator?

Our Cat Food Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Cat Food Calculator

🐱Cat Food Calculator

Cat weight (kg)

A cat food calculator determines daily calorie needs based on body weight and life stage. Cats are obligate carnivores with specific nutritional requirements. Overfeeding is extremely common and contributes to feline obesity, diabetes, and joint problems.

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Pro Tip

Cats naturally eat 10–15 small meals per day. Puzzle feeders and meal-sized portions rather than free-feeding help maintain healthy weight.

References

›WSAVA Global Nutrition Guidelines
›PFMA Cat Feeding Guide

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Cat Food Calculator

🐱Cat Food Calculator

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