Pet Care Calculators

Trustworthy tools for dog and cat owners. Whether you're tracking your puppy's growth or checking chocolate toxicity — we've got you.

1 calculatorsAlways free

A note on veterinary advice: Our calculators provide estimates to help you plan and understand. For health decisions — feeding amounts, medication doses, weight concerns, or emergencies — always consult your veterinarian. In an emergency, call ASPCA Animal Poison Control: (888) 426-4435.

All Pets calculators

Puppy Weight Calculator — Predict Adult Size

Predict how big your puppy will get based on their current age, weight, and breed size. Most accurate between 14 and 26 weeks old.

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First-year puppy milestones

The most common question we hear: "Is my pup on track?" Here's the roadmap.

6-8 wk

Bringing home

First vet visit, core vaccines begin, weaning complete. Start crate training.

10-16 wk

Rapid growth

Most intense growth phase. Weight often doubles. Critical socialization window.

16-26 wk

Most predictable

Sweet spot for weight predictions. Teething, discuss spay/neuter with vet.

6-12 mo

Adolescence

Growth slows for small breeds. Behavioral regression is common — stay consistent.