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🐾 Pet Age Calculator

Convert between human and pet years instantly. Estimate the age of dogs, cats, rabbits, horses, parrots, and more using quick reference multipliers.

Pet Age Calculator

Convert between human and pet years with flexible input modes, life-stage interpretation, and cross-species comparison output.

Conversion direction
Result
28.5 Dog (small breed) years
1 human yr ≈ 5.7 Dog (small breed) yrs

Life stage estimate: Childhood equivalent

Toy and miniature dogs mature quickly in the first two years, then settle into a slower ageing curve than larger breeds.

Cross-species comparison table

Animal1 human year ≈Equivalent pet age
Dog (small breed)5.7 years28.5 years
Dog (medium breed)5.3 years26.5 years
Dog (large breed)7.2 years36 years
Cat5.6 years28 years
Rabbit8 years40 years
Guinea pig10 years50 years
Hamster25 years125 years
Ferret7.5 years37.5 years
Horse2.9 years14.5 years
Parrot (African grey)1.5 years7.5 years
Tortoise (Mediterranean)0.7 years3.5 years
Goldfish4.5 years22.5 years
Bearded dragon3.5 years17.5 years

How to use this tool

  1. Choose conversion direction and species profile.
  2. Enter age directly or switch to birthdate mode.
  3. Review life-stage interpretation and compare against other animals.

Interpretation

  • Life-stage labels are mapped to human-age equivalents for quick planning.
  • Birthdate mode helps when exact age in years is unknown.
  • Species multipliers are averages and not veterinary diagnoses.

Workflow

  • CSV output supports spreadsheets and intake forms.
  • JSON report preserves settings and comparison rows for case notes.
  • Copy summary is useful in vet prep checklists.

FAQ

Are these ratios exact medical values?
No. They are practical averages for educational estimation, not clinical assessment.
Can I use partial years?
Yes. Decimal values are accepted in year-input mode.
Does birthdate mode auto-update daily?
It calculates from the current day loaded in your browser session.

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