How PetCalc works

PetCalc exists for the moments where owners need a fast estimate before they need a full conversation: how old a dog roughly maps in human terms, whether a puppy’s growth looks plausible, when a pregnancy is likely to reach the whelping window, or what a raw portion estimate looks like before a proper nutrition review.

The site is built as straightforward HTML, CSS and JavaScript so every page can be crawled, indexed and loaded without a client-side framework. That makes the pages simpler to audit and easier for search engines, screen readers and low-powered devices to handle.

What we optimise for

Verified maths stays put. The calculators use established site logic and are only changed if there is a real bug or edge-case failure.
The advice stays humble. Results are presented as estimates with clear cues about when to speak to a vet, breeder or nutrition professional.
UK owners come first. Copy uses UK spelling, UK legal context and metric units that make sense in everyday pet care.
Pages must stand alone. Every core page is route-ready, shareable and understandable without relying on pop-ups or hidden app states.

What PetCalc is not

PetCalc is not a veterinary practice, emergency line, breeding programme, pet food manufacturer or substitute for hands-on clinical judgement. It does not diagnose illness. It does not tell you that a risky situation is “fine” because a calculator result looks tidy.

Editorial approach

  • Use practical owner language first, then explain the assumption or limitation underneath.
  • Prefer veterinary, welfare or government sources when writing FAQ support copy.
  • Cut unsupported claims, inflated trust signals and made-up user numbers.
  • Keep legal, crawl and metadata basics clean so the site can actually launch.

Current live pages

PetCalc currently publishes five live calculators plus the core legal and support pages needed for launch: dog age, puppy growth, dog pregnancy, cat age and raw dog food portions.

Contact and corrections

If you spot a factual issue, route problem or accessibility problem, email hello@petcalc.uk. Clear correction notes are more useful than vague “this feels wrong” messages, so include the page URL and what you think is off.