APOP RER/MER Pet Calorie Calculator

RER = 70 × (BW_kg^0.75) • MER = RER × Activity/Life Stage Factor

Pet Details

Species Body weight

Activity / Life stage

Feeding

Calories per

How many times a day do you feed? Pet name Date

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Results

Weight

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Activity Factor

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RER

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70 × BWkg^0.75

MER (kcal/day)

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Per Feeding: —

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These guidelines were prepared by the Association for Pet Obesity Prevention (APOP) and represent the consensus of veterinary experts in pet obesity management. They are intended to serve as a guideline only. The recommendations should not be interpreted as dictating an exclusive protocol, course of treatment, or procedure. Variations in practice may be appropriate based on the needs of individual patients, the professional judgment of the veterinary team, and the resources and limitations of each practice setting.

This tool is intended for use by veterinary professionals. For pets with a body condition score (BCS) of 7/9 or higher, APOP strongly recommends initiating weight loss under the direct supervision of a veterinary healthcare team using a Step Weight Loss Plan. Regular monitoring and consideration of other health factors are essential to ensure safe and effective weight management. APOP may update these formulations and recommendations as new research and data become available.