Vet-sourced formulas, zero guesswork

Finally, pet calculators
you can trust.

Science-backed tools for feeding, health, and care. Built on peer-reviewed veterinary research — not marketing guesses.

Happy golden retriever in a sunny field
2 cups + 3 tbsp daily
Based on your dog's needs
📐Veterinary formulas (RER/MER)
📚Peer-reviewed sources
🐕200+ breeds supported
🔬WSAVA & NRC guidelines
Our Calculators

Every tool your pet needs

Science-backed calculators for dogs, cats, and aquariums. Plain-language results you can actually use.

Orange tabby cat relaxing
Two dogs running on beach
Colourful tropical fish in aquarium
Golden retriever puppy
Cat looking through window
Dog sitting in park
Orange tabby cat relaxing
Two dogs running on beach
Colourful tropical fish in aquarium
Golden retriever puppy
Cat looking through window
Dog sitting in park
Why MyPetCalc

Built different from the rest

Every competitor is ad-infested, inaccurate, or both. We took a different approach.

🔬

Peer-reviewed sources

Every formula sourced from WSAVA, NRC, AAFCO, or published veterinary research. We cite our sources on every page.

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Plain-language results

"2 cups + 3 tablespoons" — not "2.19 cups." Results you can act on without reaching for a calculator.

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Mobile-first design

Built for the phone in your hand. Fast, clean, no pop-ups blocking the result you came for.

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Brand-specific answers

500+ pet food products with exact calorie densities. Enter YOUR food — get YOUR answer.

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Breed-aware

200+ breeds with specific data. A Great Dane is not a Chihuahua — our tools know the difference.

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No dark patterns

No email gates. No "sign up to see results." No bait-and-switch. The calculator works — for free, immediately.

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Stop guessing. Start knowing.

21 science-backed calculators for dogs, cats, and aquariums. Free. No sign-up. No nonsense.

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