Health3 min(s) read
Published 11:39 10 Apr 2026 GMT
Doctor reveals true average penis length as study reveals the 'perfect' size - as voted for by women
If you were to have asked the Greco-Roman empire, a small phallus was idealized, considered to be a symbol of intellect and high societal status. Now, however, the modern era is fixated on truncheon-esque penises as a sexual weapon, emblematic of ultimate masculinity. But does the length and girth of these venereal vehicles really matter?
While many, including a raft of healthcare professionals, insist it is merely an irrelevance, the reality is that plenty of men care about it, often comparing themselves to unrealistic expectations.
What is the average penis size?
But according to Dr Karan Rajan, the truth is far less extreme than most would assume, and it might come as a relief to those concerned about the scale of their manhood.
Referencing a major 2014 study, he joked that some “rogue scientists had the balls to conduct a census” on penis size, producing results that challenge common myths. The research, carried out by a team at King's College London, measured around 15,000 men globally in an effort to create accurate size benchmarks and ease anxiety on this divisive topic.
Sharing the findings, he said: “The study revealed that the average length of a flaccid penis was 3.6 inches and the average length of an erect penis was 5.165 inches.”
For many, that figure is lower than expected, largely because of distorted perceptions. As Dr Rajan explained, “Societal expectations, warped by pornography, Hollywood, rumors and overzealous exaggeration, leave most men thinking the average penis is closer to something like 6 inches.”
He added: “Most men regrettably assume they are smaller than average and this distortion fuels a negative self-perception of the body.”
What is the 'ideal' penis size according to women?
Separate data has even ranked average sizes globally, though experts stress that numbers alone don’t tell the full story. What people are often more curious about, however, is what’s considered “ideal.”
One study asked women to choose preferred sizes in two different scenarios, casual encounters and long-term relationships, and the results showed only slight differences. For one-night stand situations, the average preference was around 6.4 inches in length and 5.0 inches in girth, while long-term partners came in just below that at 6.3 inches and 4.8 inches, respectively.
Despite the headlines, experts are keen to stress there is no universal “perfect.”
Nicole Prause warned against labelling any size as ideal, saying: “Please don’t call any penis the perfect penis.”
She added that the research is more about understanding variation than setting a standard, noting: “Situational context matters,” and explaining that “What someone prefers for a one-night stand may differ from what they prefer in a long-term partner.”
Ultimately, while the numbers may grab attention, the takeaway is simple — averages are often lower than expected, preferences vary widely, and there’s no single definition of “perfect.”