Pet Food Calorie Calculator — Metabolizable Energy | PetHealthCalc

Calculate estimated Metabolizable Energy (ME) of your pet's food using the Modified Atwater formula. Understand the caloric density of any dog or cat food label.

Guide

Understanding the caloric density of your pet's food allows for precise feeding. Labels often only provide minimums; this tool estimates the actual energy content.

How to Use

  1. Locate the 'Guaranteed Analysis' on your pet food label.
  2. Enter the percentages for Crude Protein, Crude Fat, Crude Fiber, Ash, and Moisture.
  3. The calculator will determine the NFE (carbohydrates) percentage.
  4. View the estimated Metabolizable Energy (ME) in kcal per kilogram.

Frequently Asked Questions

What is NFE in pet food?

Nitrogen-Free Extract (NFE) represents the soluble carbohydrates in the food. It is calculated by subtracting protein, fat, fiber, ash, and moisture from 100%.

Why is ME important?

Metabolizable Energy (ME) is the actual energy available for your pet to use after digestion and excretion. It is more accurate than total calories.

What if my label doesn't list 'Ash'?

If ash is not listed, a common estimate is 5-8% for dry food and 2-3% for wet food.