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Pet Weight Loss Calculators - Safe Weight Loss Plans for Dogs and Cats
Create safe and effective weight loss plans for your pets with our free weight loss calculators. Calculate target calorie deficits, feeding schedules, and timelines for healthy weight loss in dogs and cats.

Helping your pet achieve and maintain a healthy weight is one of the most important things you can do for their overall health and longevity. Our comprehensive collection of pet weight loss calculators is designed to help you create safe, effective weight loss plans for your dogs and cats.
Whether your pet needs to lose a few pounds or requires a more significant weight reduction, our free calculators provide personalized recommendations based on your pet’s current weight, target weight, activity level, and other important factors. Each calculator includes safety guidelines, timeline estimates, and feeding schedule recommendations to ensure your pet’s weight loss journey is both safe and successful.
Important: Always consult with your veterinarian before starting any weight loss program for your pet. These calculators provide estimates and should be used as a starting point for discussions with your veterinary team.
Dog Weight Loss Calculator

Create a personalized weight loss plan for your dog. Our dog weight loss calculator helps you determine the appropriate calorie deficit (typically 20-30% reduction), calculate a safe feeding schedule, and estimate the timeline needed to reach your dog’s target weight. The calculator considers factors like your dog’s current weight, target weight, activity level, life stage, and body condition to provide accurate, safe recommendations.
Cat Weight Loss Calculator

Develop a safe weight loss plan for your cat. Our cat weight loss calculator takes into account your cat’s unique needs, including neuter/spay status, breed type, and current diet. The calculator provides a safe calorie reduction plan, feeding schedule, and timeline while emphasizing the importance of gradual weight loss to prevent serious conditions like hepatic lipidosis.
Understanding Safe Weight Loss for Pets
Key Principles
Gradual Weight Loss: Safe weight loss for pets is typically 1-2% of body weight per week. Rapid weight loss can lead to serious health complications.
Calorie Deficit: A 20-30% reduction from maintenance calories is generally safe, but should be done under veterinary supervision, especially for significant weight loss goals.
Regular Monitoring: Weigh your pet weekly and adjust the plan as needed. Regular veterinary check-ups are essential during weight loss programs.
Nutritional Balance: Ensure your pet receives all necessary nutrients even while reducing calories. High-quality, nutritionally complete pet food is essential.
Exercise: Moderate, gradual increases in exercise can support weight loss, but avoid sudden, intense activity increases.
When to Consult a Veterinarian
- Your pet needs to lose more than 20-30% of their current body weight
- Your pet has underlying health conditions
- Weight loss is not progressing as expected
- Your pet shows signs of illness or changes in behavior
- You’re unsure about the appropriate target weight for your pet
Safety Guidelines
Our calculators include built-in safety checks to prevent unsafe weight loss plans:
- Minimum Calorie Thresholds: Never reduces calories below 80% of Resting Energy Requirement (RER)
- Maximum Weight Loss Rate: Limits weight loss to 2% of body weight per week (maximum safe rate)
- Timeline Warnings: Alerts you if the weight loss timeline exceeds safe parameters
- Veterinary Consultation Reminders: Emphasizes the importance of professional guidance
Remember, these calculators are tools to help you understand your pet’s weight loss needs, but they should always be used in consultation with your veterinarian to ensure the safest, most effective weight loss plan for your individual pet.
