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Usability74Design71Speed90Security62Accessibility79Growth58

Cycling through all six. Tap any point to stop.

Measured on six things

Free cat age calculator converting cat years to human years.

Growth

58

Real myth to correct, specific FelineVMA-cited wedge, shareable outputs. But it's a free single-purpose tool against Purina and International Cat Care — both free and institutionally trusted.

Screenshots

1 / 1

About this app

Free cat age calculator converting cat years to human years with chart and life stages—no account. Educational only, not veterinary advice. This free browser tool converts a cat's age into a human-equivalent age using a FelineVMA-style model instead of the outdated "multiply by seven" myth: year one ≈ 15 human years, year two ≈ 24, then about four human years per cat year. Example: a 5-year-old cat is roughly 36 in human years. Supports ages from 1 month to 25 years, reverse conversion (human to cat), and a full reference chart with life-stage labels (kitten, young adult, mature adult, senior) based on AAHA/AAFP-style guidelines. Enter years and months, total months, or date of birth. Results update instantly with no sign-up and no data storage. Includes a visual curve, shareable cards, and printable keepsakes. For education only—not veterinary care.

Key features

  • 1FelineVMA-style conversion: year one ≈ 15, year two ≈ 24, then ~4 human years per cat year.
  • 2Bidirectional calculator (cat → human and human → cat) with years/months, total months or date-of-birth input.
  • 328-row reference chart (1 month to 25 years) with AAHA/AAFP-style life stages, live filter and CSV export.
  • 4Shareable PNG result cards, share links and printable keepsakes — no account, no data storage.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Cat owners and pet parents, especially first-time adopters

Pain points

Confused by the 'seven human years per cat year' myth; unsure how old their cat really is in human terms.

Primary needs

Quick, trustworthy conversion with clear charts and life-stage context.

Demographic

Foster volunteers and animal shelter staff

Pain points

Need to estimate and communicate cat ages consistently when intake records are incomplete.

Primary needs

Reference chart, CSV download, and shareable result cards for documentation.

Demographic

Veterinary clinic front-desk staff and vet techs

Pain points

Client questions about cat age and life stage require a simple visual explanation.

Primary needs

Printable chart and a transparent formula citing FelineVMA and AAHA sources.

Demographic

Curious pet enthusiasts and content creators

Pain points

Want visually appealing age comparisons to share on social media.

Primary needs

Downloadable PNG cards, share links, and an interactive curve slider.

Scout Review

Written by AI from measured evidence, scored out of 100.

Cat Years to Human Years is a focused, well-built free tool that does one thing and does it quickly. The formula is the right one — year one ≈ 15, year two ≈ 24, then ~4 per year — sourced to FelineVMA and AAHA rather than the multiply-by-seven myth, and the site is transparent about it being an age comparison rather than a biological measurement. The calculator is above the fold, works on-device with no signup, and produces a shareable PNG or printable card in a couple of clicks. The reference chart covers 1 month to 25 years with life-stage labels and a CSV export that shelter staff will actually use. Speed is excellent (97 mobile / 100 desktop Lighthouse), security is adequate for a no-data tool, and accessibility is close to clean with two contrast and labeling fixes outstanding. The weaknesses are polish details — an unbalanced result card, tiny low-contrast table text, no sticky nav on a long page — and a growth ceiling set by free institutional competitors.

Measure by measure

Usability

74

Zero-friction core loop: toggle, preset chips, instant on-device result, no sign-up. Filterable 28-row chart and CSV export serve power users. Long page with no sticky return-to-calculator nav.

Design

71

Warm editorial identity — serif display type, deep green and one orange accent, calculator-first hero. Held back by an empty lower third in the result card and tiny low-contrast table labels.

Speed

90

Lighthouse 97 mobile / 100 desktop, LCP 1.6s, CLS 0, TBT 0ms. A genuinely snappy static-feeling page with no layout shift and no blocking scripts.

Security

62

HTTPS enforced with HSTS, frame protection and nosniff present; 7/12 header checklist. Missing CSP, Permissions-Policy, SPF and DMARC. No data storage and no account system keeps the blast radius small.

Accessibility

79

Lighthouse 97/100 with two real failures: insufficient color contrast and visible labels not matching accessible names. No WCAG statement, English-only. Strong automated baseline, small fixable gaps.

Growth

58

Real myth to correct, specific FelineVMA-cited wedge, shareable outputs. But it's a free single-purpose tool against Purina and International Cat Care — both free and institutionally trusted.

Improvement areas

  • Contrast and accessible-name failures flagged by the Lighthouse accessibility audit.
  • Empty lower third of the result panel and a decorative arrow pointing at nothing.
  • No sticky navigation back to the calculator on a very long single page.
  • No CSP, Permissions-Policy, SPF or DMARC on the domain.

Design & Usability

The design has an actual point of view — deep green serif display type with a single orange italic accent, and the calculator sitting above the fold as the hero rather than buried under marketing copy. The split input/result card is the right call for an output-oriented tool, and the primary 'Download image' button clearly outranks the outlined 'Print card'. Where it slips is the details: the result panel's bottom third sits empty after the action buttons, the hand-drawn arrow points at nothing, and the 28-row table's life-stage labels are small low-contrast gray. Usability is the stronger half. The Cat → human toggle, preset age chips and instant on-device calculation mean a first-time visitor gets a number in about three seconds with no signup and no reading. The filterable chart and full CSV export are a thoughtful nod to shelter staff and vet techs. The one real friction is length: the page runs long and there's no sticky way back to the calculator once you've scrolled into the methodology.

Speed & Security

Speed is the standout. Lighthouse measured 97/100 on mobile with an LCP of 1.6s, CLS of 0 and total blocking time of 0ms, and a clean 100/100 on desktop. That's a lightweight, static-feeling build that does exactly what a single-purpose calculator should: load instantly and never jump around while you type. Security is competent but unremarkable, which is roughly right for the product. HTTPS is enforced with HSTS, frame protection and X-Content-Type-Options are set, and the header probe scored 7 of 12. Missing are a Content-Security-Policy, Permissions-Policy, and both SPF and DMARC records on the domain — the last two mean the domain is spoofable for email, though the site itself only publishes a Gmail contact address. There's no SOC 2, no ISO, no audit, and no account system or data storage, which keeps the actual risk surface tiny. For a free no-login educational tool, that's an honest posture rather than a negligent one.

Accessibility & Growth

Accessibility lands at a strong-but-imperfect 97/100 on the Lighthouse audit, with two genuine failures worth naming: background/foreground colors that don't meet contrast ratios, and elements with visible text labels that don't match their accessible names. Those are the exact small fixes that automated scores flatter — the table's life-stage labels and methodology body copy are the likely culprits, and they're the same small gray text the visual audit flagged. There's no WCAG conformance statement and no multi-language support, both normal omissions for a tool this young. On growth, the idea is sound: the 'multiply by seven' myth is genuinely wrong, widely believed, and search-driven, and the product's FelineVMA/AAHA-cited formula, reverse conversion, CSV chart and shareable PNG cards are a real, specific wedge. The honest limit is the competition — Purina's calculator and International Cat Care's chart are both free and carry institutional trust this site can't match, and a single-purpose free converter has no natural path to network effects or accumulating data advantage. It can win a search niche; it's hard to see it becoming more than that.

Conclusion

If you want a fast, honest answer to 'how old is my cat in human years' without a login wall or a popup, this is the tool to bookmark. It's free, it cites its sources, it doesn't store anything, and it loads in under two seconds on a phone. The fixes it needs are small and specific: raise the contrast on the table labels, give the result card a bottom, and add a sticky jump-back to the calculator. None of those are structural. What it can't fix is that Purina and International Cat Care already own the trust in this niche — so the play has to be better execution and better shareable output, not a bigger brand. On that front, the PNG cards and printable keepsake are the smartest thing here.

Suggestions for improvement

  • Raise contrast on the 28-row table's life-stage labels and methodology body copy to meet WCAG AA.
  • Fix the accessible-name mismatch on labeled elements flagged by the Lighthouse audit.
  • Add a sticky 'Back to calculator' control so the long chart and methodology sections don't strand users.
  • Fill the empty lower third of the result card — add the life-stage explanation or a related-age nudge there.
How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

Cat Years to Human YearsPurina Cat Age CalculatorInternational Cat Care - Cat Age Chart
Conversion formulaFelineVMA-style: 15 / 24 / +4 per year, cited to sourceSimple cat-to-human converter with basic input and resultReference chart with life-stage guidance
Reverse conversion (human → cat)Yes — toggle between cat → human and human → catNoNo — static chart only
Life-stage labelsKitten / young adult / mature adult / senior, AAHA/AAFP-styleGeneral cat care tips alongside resultYes — life-stage guidance is the core offering
Shareable / exportable outputPNG card, share link, printable card, CSV chart downloadNot offeredChart reference only
Account required / data storageNo account, calculated on-device, no storageNo account requiredNo account required
Institutional trust / brand authorityIndependent site citing FelineVMA and AAHA sourcesPurina — major pet food brandInternational Cat Care — established charity

Purina Cat Age Calculator

A basic cat-to-human age converter from Purina with a simple input and result, plus general cat care tips.

International Cat Care - Cat Age Chart

A charitable organization's reference chart and life-stage guidance for cat owners and professionals.

Comparing options? See Cat Years to Human Years alternatives, scored side by side

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