Pick a calculator
Each tool answers one specific question with an instant, concrete result. No sign-up, no full-screen ads.
Dog Food Calculator
How many cups per day, from your dog's weight and the kcal/cup on the bag.
Calculate →Puppy Feeding Calculator
How much to feed a growing puppy, with meals per day by age.
Calculate →Cat Food Calculator
Daily portion for your cat, from weight, lifestyle and the food label.
Calculate →Dog Age Calculator
Your dog's age in human years. It is not "multiply by 7".
Calculate →Cat Age Calculator
Your cat's age in human years, using the veterinary age chart.
Calculate →Dog Cost Calculator
What a dog really costs per month and per year, with editable US prices.
Calculate →Cat Cost Calculator
Monthly and yearly cat budget with real US prices you can edit.
Calculate →Chocolate Toxicity Calculator
Your dog ate chocolate: check the risk and know when to call the vet.
Calculate →Dog Water Intake Calculator
How much water your dog should drink per day, based on weight.
Calculate →Every formula has a source
We do not make numbers up. Energy needs use the veterinary RER formula, chocolate toxicity uses published theobromine thresholds, and the age charts follow established veterinary guidance.
The New Pet Parent Handbook
The first 30 days with a new dog or kitten are chaos: what to buy, when the first vet visit happens, how much to budget each month. The handbook puts it all in order.
- Day-by-day checklists for the first 30 days
- Budget worksheet with real US prices
- First-year vaccine and parasite prevention schedule
- When a symptom can wait and when it means the vet, now
Sales open soon. Until then, grab the free checklist below.
Honest answers
Where do the formulas come from?
From published veterinary sources: energy needs use the RER formula from the NRC's Nutrient Requirements of Dogs and Cats and the WSAVA Global Nutrition Guidelines, chocolate toxicity uses theobromine thresholds from the Merck Veterinary Manual, and the age charts follow AVMA and International Cat Care guidance. Every source is listed on the Methodology page.
Do the calculators replace my veterinarian?
No. The results are estimates for healthy pets and are not a diagnosis. For any health concern, emergency, or if you are unsure, always talk to your veterinarian.
Are the calculators free?
Yes, every calculator is free with no sign-up. The site is supported by the New Pet Parent Handbook and, in the future, by recommendations for food and supplies that may earn us a commission.
Why is the result different from the feeding chart on the bag?
The chart on the bag is a broad range that has to fit every dog or cat of a given weight. The calculator works from your pet's actual weight, life stage and activity, and from the calorie density of your specific food, so it is a tighter starting point. Either way, adjust to your pet's body condition over a few weeks.
Your dog's first 30 days, sorted
The first 30 days with your new dog: what to buy, when the first vet visit happens, when the first walk is safe. A free PDF, straight to your inbox.
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