Home Back

Pet Nutrition Alliance Calorie Calculator

MER Equation:

\[ MER = 70 \times W^{0.75} \times F \]

kg

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the MER Equation?

The MER (Maintenance Energy Requirement) equation estimates the daily caloric needs of pets based on their weight and life stage/activity factor. It's widely used in veterinary nutrition to determine appropriate food portions.

2. How Does the Calculator Work?

The calculator uses the MER equation:

\[ MER = 70 \times W^{0.75} \times F \]

Where:

Explanation: The equation accounts for the non-linear relationship between body weight and metabolic rate, with different factors for different life stages and activity levels.

3. Importance of MER Calculation

Details: Accurate MER estimation is crucial for maintaining healthy weight, preventing obesity, and ensuring proper nutrition for pets at different life stages.

4. Using the Calculator

Tips: Enter weight in kilograms and select the appropriate factor based on your pet's life stage and activity level. All values must be valid (weight > 0).

5. Frequently Asked Questions (FAQ)

Q1: What are the typical factor values?
A: Factors range from 1.2 (neutered adults) to 2.0 (active/working animals). Growth and lactation require higher factors.

Q2: How accurate is this calculation?
A: It provides a good estimate for most pets, but individual variations may require adjustment based on body condition.

Q3: Should I use this for all pets?
A: This is primarily for dogs and cats. Other species may require different equations.

Q4: How often should I recalculate?
A: Recalculate whenever your pet's weight changes by 10% or more, or if their activity level/life stage changes.

Q5: What if my pet is overweight?
A: Use the weight loss factor (1.6) and consult with your veterinarian for a personalized plan.

Pet Nutrition Alliance Calorie Calculator© - All Rights Reserved 2025