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Estimated human-equivalent pet age

Calculate estimated human-equivalent pet age using the values and assumptions you provide.

Calculate estimated human-equivalent pet age using the values and assumptions you provide.

Both dots and commas are accepted as decimal separators.

Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.

Method and assumptions

Method version 1.0.0 · Updated

Calculate

Formula: Simplified estimate after year one: 15 + 4 × (age − 1)

Calculate estimated human-equivalent pet age using the values and assumptions you provide.

age
Pet age (years)

Results depend on the assumptions entered; verify professional or safety-critical decisions independently.

Calculate with code

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript
const ageYears = 5;
console.log(ageYears <= 1 ? 15 : 15 + 4 * (ageYears - 1)); // rough dog-age estimate: 31
TypeScript
const ageYears = 5;
const estimate: number = ageYears <= 1 ? 15 : 15 + 4 * (ageYears - 1);
console.log(estimate); // rough estimate, varies by size/species
Python
age = 5
print(15 if age <= 1 else 15 + 4 * (age - 1))  # simplified estimate only
Java
int age=5;
System.out.println(age <= 1 ? 15 : 15 + 4*(age-1)); // simplified estimate
C#
int age=5;
Console.WriteLine(age <= 1 ? 15 : 15 + 4*(age-1)); // simplified estimate