Pet Age to Human Age Calculator
Convert your pet's age to human years using updated formulas. More accurate than the old 'multiply by 7' rule.
Inputs
years
Results
Human Age Equivalent
39 years
Age Difference34 years
How to Use This Calculator
- Enter Pet Age, Pet Type, and Pet Size (Dogs Only).
- Review the Human Age Equivalent (years) result.
- Use Age Difference (years) to inform your decision.
How the result changes with Pet Age
| Pet Age | Human Age Equivalent |
|---|---|
| 2 | 24 years |
| 7 | 49 years |
| 13 | 79 years |
| 18 | 104 years |
What each input means
- Pet Age
- Your pet's age in years
- Pet Type
- 1=Dog, 2=Cat
- Pet Size (Dogs Only)
- 1=Small (<20lbs), 2=Medium (20-50lbs), 3=Large (>50lbs)
How this is calculated
Formula
Dog: First year = 15, Second year = +9, Then +4-6 per year (size dependent)Worked example, using the default values
- Identify Input ParametersPet Age = 5, Pet Type = 1, Pet Size (Dogs Only) = 2 = 3 input(s) provided
- Calculate Human Age EquivalentHuman Age Equivalent39 = 39
- Calculate Age DifferenceAge Difference34 = 34
Related Calculators
The questions that sit next to this one — chosen by subject, including calculators filed under a different category.
Pet Care
Dog Age Calculator
Convert your dog's age to human years using the updated veterinary formula. Results vary by dog size — small dogs age differently than large breeds.
Pet CareCat Food Calculator
Calculate how much to feed your cat daily based on weight, age, activity level, and food type.
Pet CarePet Care Master Calculator
Pet age, food portions, ideal weight, and medication dosing calculator.
Specialty InsurancePet Insurance Calculator
Estimate pet insurance premiums and expected value from pet type, age, breed size, deductible, and coverage level.
More in Family, Parenting & Pets.