Free calculators & tests for dogs and cats
How old is your dog in human years? How much food does your cat really need each day? And what does the first year with a new family member cost? Get answers in seconds, no sign-up needed.
4 calculators
2 tests
100% free
Calculators
Numbers you can rely onDog age calculator
Cat age calculator
Pet food calculator
German onlyFirst-year pet cost calculator
German onlyTests
Find out which pet truly fits your lifeVeterinary basisAge tables based on AVMA guidance, food needs based on the RER formula.
Regularly reviewedLast updated: September 2026
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Why it pays to calculate more precisely
The old rule of thumb that one dog year equals seven human years has long been outdated, and the feeding guide on the bag rarely fits your pet exactly. Our calculators take size, age, activity and food type into account and give you an honest orientation you can discuss with your vet.
Frequently asked questions about our calculators
Are the calculators really free?
Yes, 100%. No sign-up and no hidden costs, just like our coupons.
How accurate are your calculators?
Our calculators are based on established veterinary guidelines and are reviewed regularly. They give you a solid orientation, but they do not replace a visit to the vet. For health questions, your vet is always the best place to go.
Where do the calculation methods come from?
We follow common veterinary reference values, for example on ageing, daily food requirements and first-year costs, and update our formulas as soon as new findings emerge.
Can I save or share my results?
Of course. Feel free to share your result with other pet owners, for example as a screenshot on social media.
Will there be more calculators?
We keep expanding our collection of calculators and tests. Check back regularly or follow us on social media so you do not miss anything.
