Free Tool
Cat Daily Feeding Calculator
Enter your cat’s weight, body condition score, and food’s calorie content to get personalized daily feeding amounts by life stage, based on veterinary RER/MER methodology.
Your cat’s details
Please enter a valid weight.
Emaciated (1)
Ideal (5)
Obese (9)
BCS 5/9 is ideal. Each point above or below 5 represents approximately 10% over or underweight. RER is calculated from estimated ideal body weight.
Check the guaranteed analysis or calorie statement on your food’s packaging. Common values: dry kibble ≈ 3,200–4,500 kcal/kg · wet/canned ≈ 700–1,200 kcal/kg · raw ≈ 1,200–2,000 kcal/kg
Please enter a valid calorie value.
Daily feeding by life stage (full diet)
| Life stage | MER factor | kcal / day | g / day | g / meal (2×) | cups / day (wet) | cups / day (dry) |
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Note: Calculations use RER = 70 × (ideal body weight in kg)0.75, multiplied by established feline MER factors sourced from the Pet Nutrition Alliance and NRC. Ideal body weight is estimated from BCS using the standard 10%-per-point adjustment from 5/9. Where life stage factors are expressed as a range, both ends are shown. Cup volumes used: wet/canned = 230 g/cup · dry kibble = 110 g/cup. These figures are starting points only — individual cats can vary by up to 50% from predicted values. Adjust intake based on body condition score over 2–4 weeks and always consult your veterinarian or a certified companion animal nutritionist, particularly for kittens, pregnant or lactating queens, or cats with health conditions.
Want a fully tailored nutrition plan for your cat? I’m a certified companion animal nutritionist specializing in balanced, species-appropriate diets for cats at every life stage.
Visit A. Geiger Pet NutritionNeed something more specific?
The calculators above are a solid starting point, but every animal is different. If your dog or cat has a health condition, a tricky history, or you are building a home-prepared diet from scratch, a one-on-one consultation gives you a plan built their needs.