Do you want to convert deer years compared to human years? On the average deer often live between 10 to 20 years, but their lifespan can be shorter due to factors like hunting, predation, and disease. In captivity, they can live up to 20 years.

Deer reach full maturity around 2-3 years old. This could be likened to the first 12 years of human development, covering childhood and entering teenage years.

For Example

• A 1-year-old deer is equivalent to a 12-year-old human.
• A 3-year-old deer is equivalent to a 23-year-old human.
• A 7-year-old deer is equivalent to a 43-year-old human.
• A 10-year-old deer is equivalent to a 58-year-old human.
• A 15-year-old deer is equivalent to an 83-year-old human.
• A 20-year-old deer is equivalent to a 108-year-old human.

Similarly, when you’re looking for how many deer years is 1 human year?

1 human year = 10 / 80 deer years ≈ 0.125 deer years

Deer Years to Human Years

On the basis of deer avg lifespan, use below deer years in human years calculator to find its human equivalent age.

Enter Deer Years:

• White-tailed Deer: In the wild, white-tailed deer often live between 6 to 14 years, but their lifespan can be shorter due to factors like hunting, predation, and disease. In captivity, they can live up to 20 years.
• Mule Deer: Similar to white-tailed deer, mule deer typically live around 10 years in the wild, though some can reach up to 20 years in protected environments.
• Red Deer: Red deer can live up to 15-18 years in the wild, with females generally living longer than males. In captivity, they can live over 20 years.
• Elk (Wapiti): Elk can live up to 10-13 years in the wild. However, in environments with fewer natural predators and in captivity, they can live up to 20 years or more.
• Moose: In the wild, moose have a lifespan of about 15 to 20 years, but this can be shorter due to hunting and natural predation.
• Reindeer (Caribou): Reindeer typically live about 15 years in the wild. In captivity, they can live a bit longer.

Deer years to human years Chart

The oldest known deer was named Bambi. Bambi was a Scottish red deer that lived for 31 years and 226 days, making him the longest lived deer on record.

Want to calculate age of other mammals like Goat age in human years and Cow Years to Human Years, we’ve got you covered.

How do deers age / Life Stages

Deer, like many mammals, go through distinct life stages from birth to adulthood. These stages can vary slightly between different deer species, but generally, they include the following:

1. Baby Deer (Fawn): This stage spans from birth to 1 year. During this period, the deer is referred to as a fawn.
2. Teenage Deer (Young Fawn): This stage covers deer aged 1 to 2 years. They are still relatively young and are referred to as young fawns.
3. Adult Deer: This stage encompasses deer aged 3 years to either 7 or 10 years, depending on the species. During this period, female deer are termed “does,” while male deer are called “bucks” or “stags.”
4. Old and Very Old Age: Deer that are 7 years or older (the exact age can vary based on the species) fall into this category. These deer are considered to be in the later stages of their life.