How old is a 2-year-old Bearded Collie in human years?

On the AAHA chart, a 2-year-old Bearded Collie is 24 human years in the 21–50 lb or 51–90 lb weight class.

How old is a 10-year-old Bearded Collie in human years?

On the AAHA chart, a 10-year-old Bearded Collie is 60–66 human years in the 21–50 lb or 51–90 lb weight class.

Which AAHA weight class is used for a Bearded Collie?

The verified weight 45–55 lb is charted as 21–50 lb or 51–90 lb.

What size class does the age calculator use for a Bearded Collie?

The calculator is prefilled as large from the verified adult weight 45–55 lb.

Age calculator

Bearded Collie age in human years

Bearded Collie adults are charted from the verified weight 45–55 lb.

Last reviewed November 1, 2026.

Bearded Collie dog — Photo: Wikimedia Commons · CC BY-SA 3.0 · Wikimedia Commons

Your inputs

Results update live as you type.

Weight unit

Dog weight (lb)

Typical adult weight: 45–55 lb.

Dog age (years)

Size category

Prefilled as large from this breed's adult weight.

Your results

Live — updates as you change inputs.

Dog age conversion

53 years

Human-equivalent age

Size category

large

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.

Lifespan12–14 years

Weight45–55 lb

SizeLarge GroupHerding Group

On the AAHA canine age chart that weight falls in 21–50 lb or 51–90 lb. The calculator on this page is the PawCalculator dog age calculator: 16 × ln(age) + 31, with the senior threshold set from the large 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 60–66 human years. That is 7 human years older than the up-to-20-lb line on the same chart (56).

The listed lifespan is 12–14 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.

Bearded Collie age in human years by the AAHA weight class

Swipe sideways to read every column.

Dog age	Weight class	Human years
1	21–50 lb or 51–90 lb	15
2	21–50 lb or 51–90 lb	24
3	21–50 lb or 51–90 lb	28–30
4Current age	21–50 lb or 51–90 lb	33–35
5	21–50 lb or 51–90 lb	37–40
6	21–50 lb or 51–90 lb	42–45
7	21–50 lb or 51–90 lb	47–50
8	21–50 lb or 51–90 lb	51–55
9	21–50 lb or 51–90 lb	56–61
10	21–50 lb or 51–90 lb	60–66
11	21–50 lb or 51–90 lb	65–72
12	21–50 lb or 51–90 lb	69–77
13	21–50 lb or 51–90 lb	74–82
14	21–50 lb or 51–90 lb	78–88

The highlighted row follows the dog age in the calculator above.

Frequently asked

Questions from the breed record

On the AAHA chart, a 1-year-old Bearded Collie is 15 human years in the 21–50 lb or 51–90 lb weight class.

Sources

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