Nobody has measured it. The only located Australian study is self-measured: 184 volunteers in a condom study reported 15.71 cm erect, which is 2.6 cm above the pooled clinical world figure and mainly demonstrates the self-report problem. The claimed 13.3 cm on the map matches nothing at all, in either direction.
The claim runs 2.41 cm below the measurement, and both are erect measurements, so the gap is not an artefact of measuring different things.
What was actually measured in Australia?
Australia is the clearest case in the register of a claim that is unrelated to its own literature. The one study says 15.71 cm. The map says 13.3 cm. The gap between them is 2.41 cm, which is larger than the claimed gap between most neighbouring countries on the entire ranking. A compilation that was even loosely tracking the literature could not produce this.
The study itself is a condom-fit trial, and self-measurement in condom studies is not automatically bad: the American entry in this register uses the same basic approach with 1,661 men and a stronger incentive, and lands only about a centimetre above clinical. But 184 men reporting 15.71 cm is 2.6 cm above the clinically measured world mean, which is at the far end of the 1–2 cm inflation that self-report normally produces.
Belladelli 2023 pooled the Oceania literature and got 15.71 cm erect with a confidence interval running from 12.73 to 18.69, and no flaccid or stretched pool at all for the region. That interval is nearly 6 cm wide. Oceania is not a region with distinctive data. It is a region with almost none.
How does that compare with the rest of the world?
The claim puts Australia 96th of 119 countries on the ranked list. Here is that number set against the figures that come with a method attached.
Figure
cm
What it is
The claim for Australia
13.30
Labelled erect. No method, no sample size, no reference.
Smith et al., Int J STD AIDS
15.71
erect, 184 men, 1998. The best located
measurement in Australia.
Clinically measured worldwide
13.12
Erect, 15,521 men. Veale 2015, the pooled clinical figure.
Pooled worldwide
13.93
Erect, 55,761 men. Belladelli 2023, 75 studies.
Pooled for Oceania
15.71
Erect, 95 % confidence interval
12.73–18.69 cm
. Belladelli 2023.
That last interval is 5.96 cm wide,
for a whole continent, from the largest meta-analysis there is. The claimed map it sits
under spreads all 119 countries across
7.9 cm and prints every
country to one decimal place. Read those two sentences together and you have the
entire problem with penis size by country.
How many men does the claim cover?
184 measured → 10,000,000 described
184 men in Australia appear in the studies this register could locate. The claimed figure is applied to roughly 10,000,000 adult men: one measured man for every 54,348.
Where would you land in Australia?
Against the claimed figure, because that is the number people mean when they ask. It
is the weaker of the two numbers above, and the calculator says so. Everything is
computed in your browser and nothing you enter is stored or sent anywhere.
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1,350,250,000men smaller
1,350,240,000men larger
50 of 100 men worldwide are larger than you.
L 13.6 cm
Estimated from the claimed world mean of 13.6 cm across ≈ 2,700,490,000 adult
men in 119 countries. You beat the claimed mean in 31 of them. The
claims are the internet's, not ours; we are grading them one by one.
See the audit.
What should you take from this?
Australia has one self-measured study, a claimed figure that contradicts it by 2.41 cm in the opposite direction to the usual bias, and a regional pool six centimetres wide. There is no Australian average worth quoting.
If the number that brought you here was the low one, it is not from a study. If it was the high one, it is from 184 men marking their own homework.
Nearby in the register
The nearest countries with an entry of their own here.
Nearer still, and with nothing to show: Papua New Guinea, Indonesia, New Zealand. Those
countries carry a claimed figure on every map and no located study behind it, so they
have no page here. The method page lists all of them.
Sources for this page
Smith et al., Int J STD AIDS, 1998, n = 184. Self-measured erect, condom study.
Study
Veale D et al. Am I normal? BJU International 2015; 115(6): 978–986. The pooled
clinical figures used throughout this site.
Belladelli F et al. Worldwide Temporal Trends in Penile Length. World J Mens Health
2023; 41(4). The regional pooled figures and confidence intervals.
The full reference list, the grading scheme and all 119 claims are on the
method and sources page.