Dog Food Guaranteed Analysis Calculator
Decode your dog food's guaranteed analysis label — convert all nutrients to dry matter basis and assess nutritional adequacy.
What Is the Dog Food Guaranteed Analysis Calculator?
Decode your dog food's guaranteed analysis label — convert all nutrients to dry matter basis and assess nutritional adequacy.
The guaranteed analysis panel on every dog food bag is the key to understanding what your dog is actually eating. But raw percentages are misleading without context — you need to know moisture content, dry matter values, and how each nutrient compares to AAFCO minimum requirements. This calculator decodes the entire label in one step.
Every result is based on published veterinary research and breed-size-specific growth data — not generic averages. This tool is completely free, works instantly in your browser, and requires no account or sign-up.
How to Use This Calculator
Fill in the required fields above — typically your dog's weight, age, or breed size. Every field has a clear label and hint.
Press the calculate button to get your instant result. No page reload, no account needed, no waiting.
Your result appears immediately below the calculator. It includes the primary answer plus additional context where relevant.
Share, print, or save your result. Always discuss health-related results with your veterinarian before making decisions.
How It Works
The guaranteed analysis lists minimum guaranteed protein and fat, and maximum guaranteed fibre and moisture. Some brands also list calcium, phosphorus, omega fatty acids, and other nutrients. Converting these to dry matter basis (dividing by 1 minus moisture fraction) allows accurate comparison between any food types. Estimated metabolisable energy is calculated using modified Atwater factors: protein = 3.5 kcal/g, fat = 8.5 kcal/g, carbohydrate = 3.5 kcal/g.
Sources: AAFCO 2022 Dog Food Nutrient Profiles; NRC Nutrient Requirements of Dogs and Cats 2006.
Veterinary Research
Every formula is derived from peer-reviewed veterinary studies and clinical guidelines, not guesswork or generic rules.
Instant Results
No page reload, no waiting, no account needed. Enter your details and your result appears immediately.
100% Private
All calculations happen in your browser. Nothing you enter is ever stored on our servers or shared with anyone.
Always Free
Every calculator on Doggy Calculators is and will always be completely free to use — no premium tier, no catch.
Frequently Asked Questions
Sources & References
This calculator's formulas are based on the following peer-reviewed and authoritative veterinary sources:
- WSAVA Global Nutrition Guidelines — RER formula, caloric requirements, and feeding protocols
- Association of American Feed Control Officials (AAFCO) — Nutritional standards for complete and balanced dog food
- National Research Council u2014 Nutrient Requirements of Dogs — Scientific basis for canine dietary requirements
⚠️ These calculators are reference tools only. Always consult a licensed veterinarian before administering medication or making medical decisions.