Cat Age Calculator
Overview
Convert cat years to human years using veterinary formula. See life stages, life expectancy (indoor vs outdoor), and health tips for kittens, adults, and senior cats.
Key Facts
| Field | Value |
|---|---|
| Calculator ID | cat-age |
| Category | Lifestyle |
| Vertical | Lifestyle & Wellness |
| App route | /verticals/lifestyle/cat-age |
| API endpoint | /api/public/calculate?id=cat-age |
Inputs
| Input ID | Label | Type | Required | Default | Constraints |
|---|---|---|---|---|---|
catAge | Cat Age (years) | number | Yes | 3 | min 0, max 30, step 0.5 |
environment | Cat Environment | select | Yes | indoor | - |
How to Use
- Select Environment — Choose indoor, outdoor, or indoor/outdoor mix (affects life expectancy)
- View Results — See human age equivalent, life stage, life expectancy, and age-appropriate health recommendations
Result Surfaces
| Output | Display Type | Format |
|---|---|---|
| Computed results | result-card | - |
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FAQ
Is the 7-year rule accurate for cats?
No. Cats age faster early (15 human years by age 1, 24 by age 2), then slower (+4 years/year after). The 7:1 rule is a myth. Veterinary formula: Year 1 = 15, Year 2 = 24, then +4 per year.
How long do indoor cats vs outdoor cats live?
Indoor cats: 12-18 years (some 20+). Outdoor cats: 2-5 years only. Outdoor risks: cars (leading cause), predators, disease, fights, poisoning. Indoor/outdoor mix: 7-12 years. Keep cats indoors for 3x longer lifespan.
At what age is a cat considered senior?
Senior: 11-14 years. Geriatric: 15+ years. Senior cats need vet visits every 6 months (not annually). Watch for: kidney disease (30-40% of cats 10+), hyperthyroidism, diabetes, arthritis (90% of cats 12+).
Evidence
src/lib/calculators/registry.ts(metadata)src/lib/calculators/page-registry.ts(page/HowTo metadata)src/lib/calculators/lifestyle/cat-age.ts(calculator config)
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