Dog Age Calculator

Enter your dog’s details below for a personalised result.

Tell us about your dog

Name is optional — age is required

Dog’s Name optional

e.g. Biscuit, Coco, Max…

Age (Years)

Enter 0 if under 1 year ⚠ Please enter a valid age (0–30)

Extra Months

Optional additional months

Select your dog’s size

Based on adult body weight

Small Under 20 lbs
/ 9 kg

Medium 21–50 lbs
/ 9–23 kg

Large 51–90 lbs
/ 23–41 kg

Giant Over 90 lbs
/ 41 kg

⚠ Please select your dog’s size

🐶 Result

Human Years

Dog Age

Avg. Ratio

Life Expectancy

Human Stage

Life Progress

Born

Current Stage

Did You Know?

Life Stage Timeline

All life stages for your dog’s size class

The Science

How the Calculator Works

Our tool uses veterinary-approved age conversion data, not the outdated “multiply by 7” myth.

Size Matters Most

Larger dogs age faster than smaller breeds. A Great Dane ages far more rapidly than a Toy Poodle — that’s why our tool always accounts for weight class.

Science-Based Formula

We use interpolated veterinary conversion charts that properly model rapid early development and size-adjusted ageing rates throughout a dog’s life.

Why It Matters

Knowing your Aussiedoodle’s human-equivalent age helps you tailor nutrition, exercise intensity, and veterinary care to their actual biological needs.