Cow years to human years

cow years to human years

Do you want to convert cow years to human years? It's simple to calculate:

  • the first cow year is equal to 14 human years;
  • each subsequent cow year equals 4 human years.

Now you can find out your cow's age in human years using these estimations. For example:

  • 6 months old cow is 7 years old in human years
  • 1-year-old cow is 14 years old in human years
  • 5-year-old cow is 30 years old in human years
  • 10-year-old cow is 50 years old in human years
  • 15-year-old cow is 70 years old in human years
  • 20-year-old cow is 90 years old in human years

Cow years to human years calculator

Convert cow years to human years using our online cow age converter:




Cow age chart


cow years to human years chart

How do cows age?

Cows live through 5 main life stages:

  1. From birth to 6 months – baby life stage, when a cow is called a calf
  2. From 6 month to 1 year – teenage life stage, a female cow is called a heifer, a non-castrated male is a bull calf, and a castrated male is a steer
  3. From 1 year to 10 years – a cow reaches its adulthood. Females are called cows, non-castrated males - bulls, and castrated males - steers
  4. From 10 years to 12 years - aged cows
  5. From 12 years and older – elderly cows

The oldest cow

The oldest cow recorded by the Guinness World Records was Big Bertha, who died at the age of 43 years and 9 months (which equals 185 human years!)