If you want to do the math, here is how:
The most precise method involves the empirical equation that the researchers discovered, which is 16 x ln(dog’s age) +31 = human age, (that is the natural logarithm of the dog’s real age, multiplied by 16, with 31 added to the total.)
You can compute this using any calculator which has the ln function. Simply type your dog’s age. Press ln. Press x and type in 16. Press + and type in 31. Hit the equals sign and there you have it.