The Animal Age Calculator is a free online tool that converts the age of various animals into human years.
Animal Age Calculation Formula
The age calculation formulas for each animal are as follows:
Dog (Small Breed): Up to 2 years: 24 human years, +4 years for each additional year
Dog (Medium Breed): Up to 2 years: 24 human years, +5 years for each additional year
Dog (Large Breed): Up to 2 years: 24 human years, +6 years for each additional year
Cat: 1 year: 20 human years, +4 years for each additional year
Gorilla: 1 year: 12 human years, 2 years: 24 human years
Hedgehog: 1 year: 18 human years, +18 years for each additional year
Bear: 1 year: 15 human years, 2 years: 25 human years, 3 years: 35 human years, 4 years: 45 human years
Turtle: 1 year: 50 human years
Giraffe: 1 year: 25 human years, +4 years for each additional year
Guinea Pig: Up to 1 year: 5 human years, +2 years for each additional year
Dohchi: 1 year: 5 human years
Red-Eared Slider Turtle: 1 year: 70 human years
Sea Turtle: Up to 1 year: 90 human years, +5 years for each additional year
Lion: Up to 1 year: 10 human years, +5 years for each additional year
Alligator: Up to 1 year: 25 human years, +10 years for each additional year
Chinchilla: Up to 1 year: 15 human years, +4 years for each additional year
Chameleon: Up to 1 year: 10 human years, +5 years for each additional year
Elephant: Up to 1 year: 40 human years, +10 years for each additional year
Rabbit: Up to 1 year: 20 human years, +7 years for each additional year
Ferret: Up to 1 year: 22 human years, +4 years for each additional year
Federer: 1 year: 20 human years, 2 years: 40 human years
Peregrine Falcon: 1 year: 35 human years, 2 years: 50 human years, 3 years: 65 human years
Panther: 1 year: 18 human years, 2 years: 28 human years
Hamster: 1 year: 32 human years, 2 years: 75 human years, 3 years: 105 human years
Dog Size Classification
| Size | Estimated Weight (KG) | Representative Breeds |
|---|---|---|
| Small Breed | Up to 7kg | Maltese, Papillon, Pomeranian, Shih Tzu, Yorkshire Terrier, Bichon Frise, Miniature Dachshund, Toy Poodle, Chihuahua, etc. |
| Medium Breed | 10–20kg | Bulldog, Beagle, English Cocker Spaniel, Welsh Corgi Pembroke, Jindo Dog, etc. |
| Large Breed | Over 30kg | Labrador Retriever, German Shepherd, Golden Retriever, Alaskan Malamute, etc. |
Average Lifespan of Animals
The average lifespan of animals is summarized below:
- Dog: Small breed: 12–16 years, Medium breed: 10–14 years, Large breed: 8–12 years
- Cat: 14–20 years
- Hedgehog: 4–7 years
- Hamster: 2–3 years
- Rabbit: 8–12 years
- Ferret: 7–10 years
- Chinchilla: 10–15 years
- Turtle: Over 50 years
- Guinea Pig: 4–8 years
- Lion: 10–14 years (wild), Over 20 years (captivity)
- Alligator: 30–50 years
- Giraffe: 20–25 years
Monthly Animal Age Calculator
A detailed monthly age calculator is available on the following pages:
References
- https://blog.naver.com/marketinganywhere/223715245802
- https://cafe.naver.com/marketinganywhere/54
- https://cranberrymarketing.blogspot.com/2025/01/blog-post_4.html
- https://marketinganywhere.tistory.com/145
- https://cafe.daum.net/cranberrymarketing/Vpw3/14
- https://wikidocs.net/blog/@cranberrymarketing/1115/
- https://velog.io/@automatethem/%EB%8F%99%EB%AC%BC-%EB%82%98%EC%9D%B4-%EA%B3%84%EC%82%B0%EA%B8%B0%EB%A1%9C-%EB%B0%98%EB%A0%A4%EB%8F%99%EB%AC%BC%EC%9D%98-%EC%8B%A4%EC%A0%9C-%EB%82%98%EC%9D%B4%EB%A5%BC-%ED%99%95%EC%9D%B8%ED%95%B4-%EB%B3%B4%EC%84%B8%EC%9A%94
- https://automatethem.github.io/%EB%8F%99%EB%AC%BC-%EB%82%98%EC%9D%B4-%EA%B3%84%EC%82%B0%EA%B8%B0-%EB%B0%98%EB%A0%A4%EB%8F%99%EB%AC%BC%EC%9D%98-%EC%82%AC%EB%9E%8C-%EB%82%98%EC%9D%B4-%EA%B3%84%EC%82%B0-%EB%B0%A9%EB%B2%95/