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Dogs • nutritionVerified Scientific Formula

Dog Resting Energy Requirement (RER) Calculator

Computes the basal calories required by a canine at rest to maintain essential cellular functions, respiration, and thermoregulation.

Enter Parameters

lbs
Calculated Output
Resting Energy Requirement (RER)
727kcal/day
What This Result Means
At rest, this dog requires ~727 kcal/day to maintain essential metabolic cellular functions.
Calculation Details & Practical Equivalents
Metabolic Body Weight (BW^0.75)
10.39 kg^0.75
Body Weight in Kilograms
22.68 kg
Body Weight in Pounds
50 lbs

Formula & Mathematical Methodology

Standard Mathematical Formula
RER = 70 × (Body Weight in kg)^0.75

Formula Variables Defined

BWBody Weight(kg or lbs)

Canine body mass

RERResting Energy Requirement(kcal/day)

Basal calories required at rest

Step-by-Step Calculation Example

Example: 30 kg (66 lb) Dog

A 30 kg Labrador Retriever in resting recovery.

  1. 30^0.75 = 12.818
  2. 70 × 12.818 = 897.3 kcal/day
Final Output: 897 kcal/day

Key Assumptions

  • Dog is resting comfortably at normal room temperature.

Biological Limitations

    Verified Scientific & Veterinary Sources

    Version: 1.0•Methodology Reviewed: 2026-01-15
    1. Nutrient Requirements of Dogs and Catstextbook
    National Research Council (NRC) Committee on Animal Nutrition (2006). National Academies Press, Washington, D.C.
    Access Source Authority
    2. WSAVA Global Nutrition Guidelines & Calorie Calculator Referenceguideline
    World Small Animal Veterinary Association (WSAVA) Global Nutrition Committee (2021). Journal of Small Animal Practice
    Access Source Authority

    Dog Resting Energy Requirement (RER) Calculator — FAQs

    RER provides the baseline foundation for formulating intensive care recovery feeding, tube feeding, hospital diets, and weight management programs.

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