Ask a Sexpert: Is My Penis Big Enough?

Welcome to Ask a Sexpert – Sinful’s new monthly recurring column where we deep-dive into the questions sent to us by our customers and readers! Here, we’ll be answering all of your questions about sex, masturbation, toys and more, so stay tuned each month for insights for our resident Sinful Sexperts!


To kick things off for 2023, we’re putting this subject to bed once and for all, because it’s BY FAR the most frequently asked question we receive from customers with penises.

The short answer is, in all likelihood – YES!! – your penis probably falls within the normal size range and IS big enough for you and your partner/s to enjoy sex.

Read on for the full, unabridged answer, the reason WHY your penis is fine JUST AS IT IS, and how you can go about making your penis bigger – safely – if that is going to give you more confidence in the bedroom.

You’ve Been LIED TO!

Fellas, if you think the average penis length is over six inches (15.24cm) when hard, you’ve been hoodwinked. The average penis size is a lot smaller than what most people believe, and usually looks nothing like the penises you’ve see in porn.

The common misconception about penis size stems from research conducted by pioneering sexologist Doctor Alfred Kinsey in the late 1940s and early 1950s. Kinsey’s questionable studies established the average penis size as 6.21 inches/ 15.77cm in length (and 4.85 inches/ 12.32cm in girth) when erect. People took his word as gospel (he was a doctor and revolutionary researcher, after all!), but it turns out his methodology was fundamentally flawed – throwing out the numbers by an entire inch.

The problem was, Kinsey never actually whipped out a ruler and measured a wide assortment of dicks himself. He didn’t even have his underlings do it. Instead, measurements were given by the people who volunteered to take part in the study – which is problematic for three key reasons: 

  1. By leaving the measuring with the volunteers themselves, there was a lot of room for error and variation in measurement methodology.
  2. The measurements taken by volunteers of the study were never verified.
  3. Volunteers can lie.

The flawed statistics from this study led to generations of men believing they have small penises when the size of their member was actually average, which means the Kinsey Institute is responsible for having planted some pretty twisted standards into our psyches.

The Real Numbers Are In…

Since Kinsey’s post WWII research, a LOT of studies have been conducted around penis size. Like, a LOT, a lot.

When British researchers measured the penises of candidates in a clinical setting in 2014, the results indicated the average penis was 5.16 inches/ 13.10cm in length, and 4.59 inches/ 11.66cm in girth.

A more recent review in 2020 found that the average length of an erect penis is between 5.1 inches/ 12.95cm and 5.5 inches/ 13.97cm. Factoring in volunteer bias (where researchers hypothesised that people with larger penises were more likely to volunteer to take part in the study than people with smaller penises), the researchers believe that the average fell closer to the lower end of that range.

Studies have revealed some other interesting stats:

  • When it comes to girth, the average is 3.66 inches/ 9.29cm for a flaccid penis and 4.59 inches/ 11.66cm for an erect penis.
  • Around 85% of people with penises overestimate what the average penis size actually is.
  • Based on various reports, 45% of people with penises wish they had a larger penis, including those who have average-sized ones.
  • An erect penis of 6.3 inches/ 16.00cm falls into the 95 percentile, meaning that only 5 out of 100 people would have a penis longer than 6.3 inches/ 16.00cm.
  • Likewise, an erect penis of 3.94 inches/ 10cm is in the 5 percentile, meaning that only 5 out of 100 would have a penis shorter than 3.94 inches/ 10cm.
  • Around 95% of penises fall into the average range.
  • A 2006 study found that, while only 55% of men felt “satisfied” with the size of their penis, a whopping 85% of women were satisfied with their partner’s penis.

Does My Penis Size Impact My Sex Life?

Only if you let it!

The vast majority of men fall well within “normal ranges” for penis length, girth, curvature, and firmness. But even if you don’t, your penis size doesn’t have to stop you from having an active and rewarding sex life.

When it comes to sex, penis size really doesn’t matter. Size doesn’t affect desirability, function, or health, and a penis doesn’t need to be a certain size to have sex or ejaculate.

Size only matters as much as you let it, and worrying about having a smaller-than-average penis can drain your confidence and affect your ability to enjoy sex. Anxiety can make it more difficult to get an erection or climax, so stop stressing about your size and remember that there are a lot of other factors that contribute to being “good at sex” than just penis size.

As the old saying goes, it’s not the size of your boat – it’s the motion in your ocean!

If you’re really concerned with the size of your penis, grooming can help your penis look bigger. You can also try a number of specific sexual positions — like doggy style and “side saddle”— that can be used to achieve maximum penetration.

Last, but certainly not least, remember: penetration isn’t even the most reliable way for your partner to have an orgasm!

How Can I Make My Penis Bigger?

If, after reading all the stats, increasing the size of your penis is going to give you more confidence – by all means – there are certainly things you can do to help increase your length and girth safely. And safely is the key word, here!


Penis pumps are devices that use suction to draw blood into the penis, engorging the blood vessels in your penis so it gets (temporarily) harder and bigger. They can also help with erectile dysfunction. Check out our current range of hand held and electric penis pumps and enlargers.


Also referred to as penis sheaths, sleeves like this one are typically made from silicone blends or rubber and are worn around your penis during sex. Extenders are designed to make penetrative sex easier for people affected by erectile dysfunction (a penis sleeve stays firm, even if you’re not totally erect), while also enhancing enjoyment for both partners by extending length and girth. Many penis sleeves feature internal and external ribs, nubs and length extensions that may help to spice up your sex life and make sexual intercourse more pleasurable.


Designed to be taken orally or to be sprayed directly onto the penis, there are a wide range of safe and effective erection supplements available to help men achieve larger and longer-lasting erections. Our top-selling erection supplement, Solid Erex, is formulated to be taken just 20 – 30 minutes prior to sexual activity. Kamagra Gels are also a popular option for those seeking reliable and fast-acting results.


Cock rings are rings that are worn around the base of the penis (and sometimes the testicles) to make erections harder, bigger, and longer-lasting. Putting on a cock ring can help the blood remain in your penis longer by slowing the blood flow – allowing it to stay hard longer. Slowing blood flow can also increase and prolong sensation, which can also result in more powerful orgasms.