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Dogs • nutritionVerified Scientific Formula

Dog Weight Loss Calorie Calculator

Calculates the recommended daily caloric target and projected timeline for safe canine weight loss without muscle wasting.

Enter Parameters

lbs
lbs
Calculated Output
Target Daily Weight-Loss Intake
706kcal/day~13 Weeks Estimated Timeline
What This Result Means
To safely reach 48 lbs, feed ~706 kcal/day. Expected safe loss rate is ~0.9 lbs/week over roughly 13 weeks.
Calculation Details & Practical Equivalents
Target Caloric Target
706 kcal/day
Weight to Lose
12 lbs
Recommended Weekly Loss (1.5% BW)
0.9 lbs/week
Estimated Weeks to Target
13 weeks

Formula & Mathematical Methodology

Standard Mathematical Formula
Weight Loss Calories = 70 × (Target Body Weight in kg)^0.75 | Safe Loss Rate: 1.0% to 2.0% per week

Formula Variables Defined

W_currCurrent Weight(lbs or kg)

Current scale weight

W_targetIdeal Target Weight(lbs or kg)

Target healthy body weight

Step-by-Step Calculation Example

Example: 60 lb Dog with 48 lb Target Weight

A moderately obese dog needing to lose 12 lbs.

  1. Target Weight in kg = 48 lbs ÷ 2.20462 = 21.77 kg
  2. Target RER = 70 × (21.77)^0.75 = 706 kcal/day
  3. Safe weekly loss = 1.0% to 1.5% of 60 lbs = ~0.6 to 0.9 lbs/week
Final Output: 706 kcal/day (~8 to 12 weeks timeline)

Key Assumptions

  • Diet is formulated to provide complete micronutrition when fed at reduced caloric volume.

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 Weight Loss Calorie Calculator — FAQs

    Veterinarians recommend a safe loss rate of 1.0% to 2.0% of current body weight per week. Faster loss risks loss of lean muscle mass.

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