Dog Year Calculator

The Dog Age Calculator helps users determine their dog’s age in equivalent human years based on the dog’s age in human years and size category.

Use Our Dog Year Calculator

How to Use the Dog Age Calculator

This guide will walk you through the steps to effectively use the Dog Age Calculator to estimate your dog’s age in human years.

Step 1: Input Your Dog’s Age

  1. Locate the field labeled Dog’s Age in Human Years.
  2. Enter your dog’s age in human years in the input box provided. You must input a value because this field is required.
  3. Ensure the age you enter is between 0.1 and 30 years. The calculator accommodates decimal input up to one decimal place to allow for more precise age calculation (e.g., 5.5 years).

Step 2: Select Your Dog’s Size

  1. Find the drop-down menu labeled Dog’s Size.
  2. Select the size category that best matches your dog’s weight. The options are:
    • Small: Up to 20 pounds
    • Medium: 21-50 pounds
    • Large: 51-90 pounds
    • Giant: 91+ pounds
  3. This field is mandatory, so you must choose one of these options to proceed with the calculation.

Step 3: Receive the Calculation Results

Once you have filled out both input fields, the calculator will automatically compute and display the results, which include:

  • First Year Development: Shows development equivalent to up to 15 human years, depending on whether your dog is younger than one year.
  • Second Year Development: Accounts for development equivalent to 9 human years in the second full year of the dog’s life.
  • Additional Years Development: For dogs older than two years, the calculation adds years based on the size category selected:
    • Small dogs: Additional 4 human years per year
    • Medium dogs: Additional 5 human years per year
    • Large dogs: Additional 6 human years per year
    • Giant dogs: Additional 7 human years per year
  • Total Dog Age in Human Years: This field displays the cumulative human age equivalent for your dog, based on the calculations above.

Final Note

The calculated values are approximations designed to give a broad idea of your dog’s relative age in human terms. Each dog’s development may vary significantly depending on factors such as breed, health, and lifestyle.