The 2026 holiday gift guide for dog & cat lovers is hereShop gifts →
The Paw Plan
Home / Dog age / 1-year-old small dog
Dog age

How old is a 1-year-old small dog in human years?

About 15. Here is the chart and what this age means.

Updated October 2026Numbers calculated for this page
A 1-year-old small dog (up to about 22 lb) is about 15 in human years.
15small dog, age 1
15medium dog, age 1
15large dog, age 1
15giant dog, age 1

Life stage: Puppy to young adult

Your dog is still young. Training, socializing and building a healthy weight now pay off for life. Yearly checkups and vaccines on schedule.

Small dog age chart

Dog ageHuman years
115
224
328
432
536
640
744
848
952
1056
1160
1264
1368
1472
1576
1680
1784
1888
1992
2096

Breeds in the small group

For example:

Pet Health Record (printable)
Keep every vet visit in one place

Pet Health Record (printable) · $3.49

Vaccines, meds, weight and vet visits on one printable record, so every checkup starts with the full picture.

See it on Etsy →

Other ages

Other sizes at this age: medium, large, giant.

Questions people ask

Is a 1-year-old small dog old?

At about 15 in human years, a 1-year-old small dog is in the "puppy to young adult" stage.

Why do bigger dogs age faster?

Larger breeds tend to have shorter lifespans and reach their senior years sooner, so each year counts for more human years.

The Paw Plan shares general pet care information, not veterinary advice. Figures on this page are estimates calculated from the assumptions shown. Every pet is different, so check with your vet about yours.

Keep exploring

Keep exploring

All ages →
Free weekly email

One easy pet-care tip a week.

Short, practical and friendly. Join free and get our printable pet emergency contact card right away.

FREEFree printable pet emergency contact card