About PawCalculator
Built by pet owners.
Reviewed by vets.
PawCalculator is a free, vet-reviewed platform with 20 tools for feeding, health, breed matching, and lifestyle planning. Every formula is open, every result runs in your browser, and nothing is for sale.
Growing
Pet owners served
Daily
Calculations completed
20
Free tools
12
Vet advisory board
Our mission
Pet owners make dozens of decisions every week — how much to feed, whether a symptom is serious, which breed fits their home, what a vet visit should cost. Most of those decisions get made with outdated rules of thumb, brand marketing, or nothing at all. We built PawCalculator to put practical, transparent methods in the hands of every owner, for free, with no account required. Our guides are original editorial content written in-house and reviewed before publication.
What we cover
20 tools across five categories — all free, all browser-based.
Nutrition
Dog food portions, cat calorie targets, raw diet ratios, and food toxicity checks — using the RER/DER formulas vets actually use.
Health & Wellness
Pet age conversion, vet cost estimates by region, insurance comparison, vaccination timelines, and weight tracking over time.
Breed Tools
Match breeds to your home, activity level, and family. Check lifespan ranges and household compatibility across 100+ dogs and 50+ cats.
Lifestyle & Care
Daily walking schedules by breed and age, first-year adoption budgets, litter box care, and travel cost planning.
Fun & Community
Pet name generator, birthday milestones, horoscope for entertainment, and a timeline for logging memories and badges.
Safety & Trust
Every formula is reviewed by our vet board. Calculations run in your browser — your pet's data never leaves your device.
Vet advisory board
Every formula is reviewed before it ships. Board members disclose conflicts of interest and are not paid per recommendation.
Dr. Mei Yamada, DVM
Internal Medicine & Nutrition
Dr. Ama Boateng, DVM, DACVIM
Small Animal Internal Medicine
Dr. Ravi Anand, DVM
Behaviour & Training
Dr. Lars Hilden, DVM, MSc
Breed Health & Genetics
Dr. Sofia Petrov, DVM
Feline Medicine
Dr. James Chen, DVM, DACVN
Veterinary Nutrition
Full bios, credentials, and institutional affiliations are published on each tool's methodology page. PawCalculator results are educational estimates — always confirm health decisions with your own veterinarian.
Credentials and external standards
Our advisory process references published veterinary standards and public-health guidance. We cite these sources in methodology updates and content QA.
- AAHA Nutritional Assessment Guidelines for nutrition planning references.
- WSAVA Global Nutrition Guidelines for feeding framework validation.
- AVMA pet-care resources for owner education cross-checks.
- CDC Healthy Pets guidance for zoonotic-risk and travel safety context.
Timeline
Launched with 5 calculators
Started with pet age, dog food, cat calorie, walking, and adoption cost tools — built to answer the questions owners were searching for.
Expanded to 20 tools
Added the full health, breed, lifestyle, and fun suite — plus our 12-vet advisory board reviewing every formula before it goes live.
PawTalk Forum launched
Built a community layer where owners, breeders, trainers, and verified DVMs answer the messy questions calculators can't.
Growing owner community
We continue improving tools and guidance with veterinary review, transparent assumptions, and privacy-focused defaults.
How we work
Accuracy first
Every calculator uses the same formulas veterinarians use — RER, DER, breed-size adjustments. We show the math so you can verify it.
Privacy first
Calculations run entirely in your browser. Your pet's weight, age, and breed never leave your device unless you sign in to save results.
Transparent methodology
Every tool links to the formula it uses. We publish the assumptions and their limits so owners can make genuinely informed decisions.
Community-backed
PawTalk forum threads feed back into tool improvements. When owners flag edge cases, we update the formulas.
Why PawCalculator
Vet-reviewed formulas
12-vet advisory board signs off on every calculation method before it ships.
Browser-only calculations
All math runs locally. No tracking of individual inputs or results.
Location-specific costs
Vet cost and adoption estimates adjust for US state or EU country.
Breed-specific results
100+ dog breeds and 50+ cat breeds calibrated individually.
Always free
All 20 tools, all results, no paywall.
No data sales
We do not sell personal information or pet data to any third party.
Start with any tool — all free
No account required for any calculator. Sign in only if you want to save results or join PawTalk.