Biology

Cat Calorie Calculator

Estimate your cat's daily calorie needs.

Cat weight

Life stage

Calculated Output

Daily calories (kcal) 259.53

Resting need (RER) (kcal) 216.28

Formula: RER = 70 × weight^0.75 ; daily = RER × factor

Step-by-Step Breakdown

1. Values used:

2. Cat weight = 4.5

3. Life stage = 1.2

5. Daily calories = 259.53kcal

6. Resting need (RER) = 216.28kcal

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The math behind it

RER = 70 × weight(kg)^0.75; multiply by a life-stage factor.

4.5 kg neutered adult → RER 217 × 1.2 ≈ 260 kcal.

How much food?

Divide by the food's kcal per can/cup from the label.