Everyday & Conversions
Pet Age Calculator
Convert your dog's or cat's age into human years using a size-adjusted formula.
Your inputs
Change any value to update the result instantly.
Equivalent human age
48.5778 years
Pet age
3 years
Pet type
1 Dog
Life stage
2 Senior
Formula and working
human age ≈ 16 × ln(pet age) + 31 (dogs); size-adjusted for larger breeds
- 1
Collect the inputs
Pet's age = 3 years; Pet type (0 = cat, 1 = dog) = 1; Adult weight (dogs only) = 20 kg
- 2
Apply the formula
human age ≈ 16 × ln(pet age) + 31 (dogs); size-adjusted for larger breeds
- 3
Result
Equivalent human age = 48.5778 years
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Report a mistake or request an improvement
Tell us if a formula, unit, explanation, or result needs attention. Your message will include this calculator’s name and page.
Related calculators
Coffee Extraction Ratio Calculator
Calculate the coffee-to-water brew ratio and expected yield for your preferred brew strength.
Sourdough Hydration Calculator
Calculate baker's percentage hydration and adjust water for a target hydration level.
Alcohol by Volume from Specific Gravity Sizer
Estimate alcohol by volume from specific gravity sizer with adjustable inputs and a live comparison.
Aquarium Gravel and Sand Substrate Weight Sizer
Estimate aquarium gravel and sand substrate weight sizer with adjustable inputs and a live comparison.
Aquarium Heater Wattage by Ambient Temperature
Estimate aquarium heater wattage by ambient temperature with adjustable inputs and a live comparison.
Aquarium Water Volume from Glass Dimensions
Estimate aquarium water volume from glass dimensions with adjustable inputs and a live comparison.