How old is a 2-year-old Toy Fox Terrier in human years?

On the AAHA chart, a 2-year-old Toy Fox Terrier is 24 human years in the up to 20 lb weight class.

How old is a 10-year-old Toy Fox Terrier in human years?

On the AAHA chart, a 10-year-old Toy Fox Terrier is 56 human years in the up to 20 lb weight class.

Which AAHA weight class is used for a Toy Fox Terrier?

The verified weight 4–9 lb is charted as up to 20 lb.

What size class does the age calculator use for a Toy Fox Terrier?

The calculator is prefilled as toy from the verified adult weight 4–9 lb.

Age calculator

Toy Fox Terrier age in human years

Toy Fox Terrier adults are charted from the verified weight 4–9 lb.

Last reviewed November 1, 2026.

Toy Fox Terrier dog — Photo: Mrutan ( talk ) ( Uploads ) · Public domain · Wikimedia Commons

Your inputs

Results update live as you type.

Weight unit

Dog weight (lb)

Typical adult weight: 4–9 lb.

Dog age (years)

Size category

Prefilled as toy from this breed's adult weight.

Your results

Live — updates as you change inputs.

Dog age conversion

53 years

Human-equivalent age

Size category

toy

Life stage

Adult

Uses the logarithmic formula from canine DNA methylation research (16 × ln(age) + 31 for age ≥ 1).

Senior thresholds vary by size — large breeds age faster.

Lifespan13–15 years

Weight4–9 lb

SizeToy GroupToy Group

On the AAHA canine age chart that weight falls in up to 20 lb. The calculator on this page is the PawCalculator dog age calculator: 16 × ln(age) + 31, with the senior threshold set from the toy size class. The table is the AAHA chart, which changes with weight class, so the two numbers answer different questions.

Reading the numbers

At 10 years the chart reads 56 human years. That is the smallest AAHA weight class. Heavier classes read older in human years at the same birthday.

The listed lifespan is 13–15 years, so a 10-year-old is still inside the published range.

AAHA age chart

Human years below are copied from the verified breed_human_age rows for this breed, not from the calculator formula.

Toy Fox Terrier age in human years by the AAHA weight class

Swipe sideways to read every column.

Dog age	Weight class	Human years
1	up to 20 lb	15
2	up to 20 lb	24
3	up to 20 lb	28
4Current age	up to 20 lb	32
5	up to 20 lb	36
6	up to 20 lb	40
7	up to 20 lb	44
8	up to 20 lb	48
9	up to 20 lb	52
10	up to 20 lb	56
11	up to 20 lb	60
12	up to 20 lb	64
13	up to 20 lb	68
14	up to 20 lb	72
15	up to 20 lb	76