How To Use

This tool helps you create a safe weight loss plan for your cat. It calculates the appropriate calorie deficit, feeding schedule, and expected timeline based on your cat's current weight, target weight, and other factors.

Important: Always consult with your veterinarian before starting a weight loss program for your pet.

Quick Steps

  • 1 Enter your Cat's Current Weight in pounds.
  • 2 Enter your Target Weight in pounds (must be less than current weight).
  • 3 Select the Activity Level of your cat.
  • 4 Select the Life Stage of your cat.
  • 5 Select the Neutered/Spayed Status of your cat.
  • 6 Select your Cat's Breed Type (optional).
  • 7 Select the Feeding Frequency (how many meals per day).
  • 8 Select the Current Diet Type of your cat.
  • 9 Select the Weight Loss Rate (Conservative, Moderate, or Aggressive).
  • 10 Click the Calculate button to see the weight loss plan.
Cat weight loss calculator hero image - relaxed domestic cat lying on indoor floor

Cat Weight Loss Calculator

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Weight Loss Rates

RateDescriptionWeekly Loss
Conservative (1% per week)Slow and steady weight loss, safest approach1% of body weight per week
Moderate (1.5% per week)Balanced approach, recommended for most cats1.5% of body weight per week
Aggressive (2% per week)Maximum safe rate, only for healthy cats under vet supervision2% of body weight per week (maximum safe)

Safety Guidelines

GuidelineDescription
Minimum CaloriesNever reduce calories below 80% of Resting Energy Requirement (RER)
Maximum Weekly LossDo not exceed 2% of body weight loss per week
Veterinary ConsultationAlways consult your veterinarian before starting a weight loss program, especially if your cat needs to lose more than 20% of their current weight
Gradual TransitionGradually reduce food over 1-2 weeks to avoid digestive upset and hepatic lipidosis risk
Monitor ProgressWeigh your cat weekly and adjust the plan as needed

Need to calculate your cat's maintenance calories? Use our Cat Nutrition Calculator to determine daily calorie requirements for weight maintenance.

Other Calculators for Cats

Other Pet Weight Loss Calculators

FAQs

Frequently Asked Questions

How much should I feed my cat to lose weight?

The amount depends on your cat's current weight, target weight, activity level, and chosen weight loss rate. Our calculator provides a personalized calorie target with a safe 20-30% reduction from maintenance calories.

How long will it take for my cat to reach their target weight?

The timeline depends on how much weight needs to be lost and the chosen weight loss rate. A safe rate is 1-2% of body weight per week. Our calculator estimates the timeline based on these factors.

Is it safe to reduce my cat's calories by 30%?

A 30% calorie reduction is the maximum safe deficit and should only be used under veterinary supervision. Most cats do well with a 20-25% reduction. Always consult your veterinarian before starting a weight loss program.

What is hepatic lipidosis and how can I prevent it?

Hepatic lipidosis is a serious liver condition that can occur in cats who lose weight too quickly or stop eating. Gradual weight loss (1-2% per week) and ensuring your cat continues to eat regularly helps prevent this condition.

What if my cat needs to lose more than 20% of their weight?

Weight loss exceeding 20-30% of current body weight should be done under close veterinary supervision. Your veterinarian can help create a safe, monitored weight loss plan and check for underlying health issues.

How often should I feed my cat during weight loss?

Multiple small meals (2-4 times per day) can help manage hunger and maintain energy levels. Our calculator provides a feeding schedule based on your chosen frequency.

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