Dog age calculator
How old is your dog in human years?
Add your dog's age and expected adult size. The result uses a size-based age chart and always remains an approximation.
Your approximate result
Your pet is about
0human years
Life stage
Care priorities for this stage
Activity & movement
Dental & daily care
Preventive care
Everyday nutrition
Nutrition focus for this stage
Foundation
What to monitor
Nutrients worth knowing
Food and treats
Sources:
Health changes
Changes to notice and what to do
These changes can have many causes. Record what you notice and contact a veterinarian sooner if a sign is new, persistent, worsening, severe, or affecting normal activity. For severe or rapidly worsening signs, follow the emergency guidance below.
Sources:
Discuss with your veterinarian
This is general education, not a diagnosis or treatment plan. See the method and sources.
Why adult size changes the estimate
Dogs mature quickly during their first two years. After that, the age comparison separates by adult size: larger dogs generally move through later life stages sooner, while individual breed and health differences still matter.
Choose the closest expected adult size rather than an exact current weight. Mixed-breed dogs may need a best estimate.