Cat age calculator
How old is your cat in human years? Enter their age to find out, plus what their life stage means for care and play.
How old is your cat?
Years
Months
In human years
28
⚡ Young adult⚡ Caring for your young adult cat
1 to 6 years
- Daily play keeps them fit and helps prevent boredom behaviors.
- Rotate toys every week or so to keep things new and exciting.
- Plan on a yearly vet checkup.
Not sure what toys suit your cat right now?
Take the toy quizHow cat years work
The old "multiply by 7" rule doesn't work for cats. Cats grow up fast: by their first birthday they're roughly equal to a 15-year-old human, and by two they're about 24.
After that, each cat year adds about 4 human years. So a 10-year-old cat is roughly 56 in human years. This calculator uses the age chart from International Cat Care.
Vets group cats into life stages based on the AAHA/AAFP Feline Life Stage Guidelines:
- 🍼 Kitten: birth to 1 year
- ⚡ Young adult: 1 to 6 years
- 🧘 Mature adult: 7 to 10 years
- 👑 Senior: 10 years and up
Every cat is different. This is a fun estimate, not medical advice. Your vet is the best guide to your cat's health.
Cat age chart
| Cat age | Human age |
|---|---|
| 1 month | 1 |
| 3 months | 4 |
| 6 months | 10 |
| 1 year | 15 |
| 18 months | 21 |
| 2 years | 24 |
| 3 years | 28 |
| 4 years | 32 |
| 5 years | 36 |
| 6 years | 40 |
| 7 years | 44 |
| 8 years | 48 |
| 9 years | 52 |
| 10 years | 56 |
| 11 years | 60 |
| 12 years | 64 |
| 13 years | 68 |
| 14 years | 72 |
| 15 years | 76 |
| 16 years | 80 |
| 17 years | 84 |
| 18 years | 88 |
| 19 years | 92 |
| 20 years | 96 |