Free · No signup · Real vet math
Free Pet Calculators
Free pet calculators built on the math veterinarians actually use, from a family that makes pet portraits for a living. Every tool works in seconds, needs no account, and turns its result into a card worth sharing. Pick your pet situation below.
For every dog parent
Dog Age Calculator
Your dog in human years with the size-adjusted math vets actually use, not the times-seven myth. DNA-clock bonus number included.
For every cat parent
Cat Age Calculator
Your cat in human years: 15 for year one, 9 for year two, 4 a year after that. Find out exactly how long they have outranked you.
For finders, fosters & rescues
Kitten Age Calculator
A kitten showed up with no paperwork? Estimate their age from eyes, ears, teeth, and weight, the way rescues and fosters do.
For expecting cat households
Cat Pregnancy Calculator
Kittens on the way? Turn the mating date into a due window (63 to 67 days) with a week-by-week timeline and an announcement card.
Why are these free?
We’re Pet Pic Portraits, a mother and son studio that turns pet photos into custom portraits, hand-reviewed by a real person before anything ships. The calculators are the fun we have between orders. If one of them makes you smile, the photo you just used would make a beautiful portrait, and the preview is free too.
Pet calculator questions, answered
Are these pet calculators really free?
Completely. No account, no email, no paywall. Any photo you add to a shareable card never leaves your device. We make custom pet portraits for a living and the calculators are our gift to pet people.
Where does the math come from?
The age calculators use the size-adjusted veterinary conversion charts (plus the UCSD epigenetic clock as a bonus for dogs). The kitten estimator uses the development milestones rescues and fosters use: eyes, ears, teeth, movement, and weight. The pregnancy calculator uses the standard 63-to-67-day feline gestation window. Every tool says so on its page, and your vet always has the final word.
Can I put a calculator on my own website?
Yes, free. Every calculator page has a copy-paste embed code. Rescues, shelters, vets, groomers, and bloggers are welcome to embed any of them.
What are the shareable cards?
Each calculator can turn its result into a picture worth posting: your pet’s photo, name, and result on a designed card you can download or share straight from your phone.