Pet Calculators
Free calculators for dog food, cat food, dog pregnancy due date and dog/cat age in human years. Instant results — no signup needed.
Pets can't tell you when something is off — their health depends on the care decisions you make every day. Getting feeding amounts right, knowing when to expect a litter, or understanding how old your dog really is in biological terms all start with accurate numbers. These calculators are built from veterinary guidelines and peer-reviewed research.
What these tools cover
The dog food calculator estimates daily dry kibble portions based on your dog's weight, age, and activity level using standard RER (resting energy requirement) formulas. The cat food calculator does the same for cats, accounting for the caloric density of wet versus dry food. The dog pregnancy calculator estimates whelping date and key developmental milestones from the breeding date. The dog and cat age calculator converts pet age to a human equivalent using the 2019 UCSD logarithmic formula for dogs and established life-stage benchmarks for cats.
Important disclaimer
These tools provide general estimates based on breed averages and published guidelines. Individual animals vary significantly. Always confirm feeding amounts, pregnancy care, and health concerns with your veterinarian — especially for puppies, kittens, seniors, or animals with medical conditions.
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