Pet Calculators
Use free pet calculators for dog and cat age, daily calorie and food estimates, water reference amounts, pregnancy dates, boarding, sitting and adoption-cost planning.
Dog Age Calculator
Estimate a dog’s approximate human-age equivalent using an AVMA reference table for a medium-sized dog.
Cat Age Calculator
Estimate a cat’s approximate human-age equivalent using the AVMA pet-age reference table.
Dog Calorie Calculator
Estimate a dog’s resting and maintenance energy needs from body weight and an AAHA life-stage factor.
Cat Calorie Calculator
Estimate a cat’s resting and maintenance energy needs from body weight and an AAHA life-stage factor.
Dog Food Calculator
Estimate cups or cans of dog food per day from body weight, life stage and the food’s calorie density.
Cat Food Calculator
Estimate cups or cans of cat food per day from body weight, life stage and the food’s calorie density.
Pet Water Intake Calculator
Estimate a general daily maintenance-water amount for a dog or cat from body weight using AAHA reference equations.
Dog Pregnancy Calculator
Estimate a dog’s expected whelping date and a broad breeding-date range from a recorded mating date.
Cat Pregnancy Calculator
Estimate a cat’s expected queening date and typical gestation range from a recorded breeding date.
Pet Boarding Cost Calculator
Estimate boarding cost from number of pets, nights, nightly rate, fees and optional tax.
Pet Sitting Cost Calculator
Estimate pet-sitting cost from days, visits, visit rate, extra-pet charges and booking fees.
Pet Adoption Cost Calculator
Build a first-month pet adoption budget from adoption fees, supplies, food, licensing and other entered costs.
About Our Pet Calculators
This category combines practical dog and cat calculators for age comparisons, nutrition estimates, hydration references, pregnancy-date planning and everyday pet costs.
How to use these calculators
Choose the calculator that matches your question, enter current measurements or prices, and review the result together with the step-by-step explanation. Health-related results are starting estimates only.
Pet health information and limitations
Individual pets differ by species, breed, body condition, age, activity, environment and health. Feeding, hydration, pregnancy and other medical decisions should be discussed with a veterinarian.
Pet Calculator FAQs
Are the Pet Calculators free to use?
Yes. All 12 pet calculators run in the browser without a required paid account.
Are these calculators veterinary advice?
No. Health, nutrition and pregnancy results are educational estimates and do not replace veterinary care.
Which calculators use veterinary reference formulas?
Dog and Cat Calorie, Dog and Cat Food, Pet Water Intake, Dog Pregnancy and Cat Pregnancy use published veterinary reference methods.
Are pet medication doses calculated here?
No. This category intentionally does not provide medication-dosage calculations.
Do the cost calculators fetch live local prices?
No. Boarding, sitting and adoption-cost tools use only the prices you enter.
Do fields start blank?
Yes. User-entry fields start blank so example values cannot be mistaken for saved data.
Does Reset clear the tools?
Yes. The new calculators clear entered fields, results, steps and errors.
Can I use the calculators on a phone?
Yes. The category and calculator pages use the site’s responsive layout.