When it comes to safe sex, choosing the right condom is about far more than just grabbing the nearest box off the shelf. A condom that doesn't fit properly is not only uncomfortable, but also less effective as contraception.
A condom that's too loose risks slipping off, while one that's too tight is more likely to split, both of which can compromise protection against unwanted pregnancy and sexually transmitted infections (STIs).
Getting the right fit is one of the simplest things you can do to practice safer sex. So, before you buy your next pack, here's everything you need to know about finding the correct condom size.
Three key takeaways
Size matters. Getting the right-sized condom can be the difference between 98% protection and no protection at all. A condom that’s too loose may slip, while one too tight may tear.
Girth matters more than length. Condoms are measured in nominal width, which uses girth over length for sizing. So the girth of your penis will dictate the size you need.
A latex allergy doesn’t mean you can’t use condoms. Latex-free options are widely available, so you don’t need to compromise on protection.
How to measure condom size
To find the right condom size for your body, you’ll first need to measure your penis.
Make sure that your penis is erect when you’re measuring, as this is when you’ll actually be using the condom.
You’ll need to take two measurements: your length and girth.
To measure length: When measuring length, you’ll need to measure from the base of the penis (where the condom would stop rolling) to the tip.
To measure girth: When measuring girth, you should measure around the middle of your shaft and note the size in millimetres.
What size condom do you need?
While some people may think length is everything, when it comes to finding a condom that fits, girth is more important. This is because most condoms have a few extra inches of length by design.
To understand what size condom is right for you, you’ll need to look at the ‘nominal width’. You might’ve seen this on a box of condoms, wondered what it was, and like most just disregarded it.
Nominal width is how wide a condom is when it’s laid flat. You’ll need to double this measurement to see if a condom will fit your girth.
Size of condom
Nominal width
What girth it will fit
Closer fit
45-50mm
100-112mm
Regular fit
52-54mm
117-121mm
Larger fit
54-60mm
121-135mm
Closer fit condoms
Sometimes referred to as a 'snug fit' or as 'small condoms', condoms with a closer fit are a perfectly normal choice. Getting a condom that fits you right is the most important thing when it comes to practising safe sex, both to avoid the risk of STIs and pregnancy.
Regular fit condoms
Most condoms on the shelf are likely to be a regular fit. This is because they target the average length and girth. These condoms tend to be about seven inches long once fully rolled out, so most men find that it fits them quite well. However, you should still check that it fits your girth.
Larger fit condoms
These condoms are for those with a bigger girth. These usually range between 54-60mm nominal width, making them suitable for people with a girth of 121-133mm. However, there are brands that can go up to a nominal width of 69mm, meaning they would fit someone with a girth of 155.25mm.
What is the average penis size in the UK?
According to a 2012 review, that took the average length across a range of 609 British men, the average penis size in the UK when erect is:
Girth: 4.81 inches (122.2mm)
Length: 5.6 inches (143.0mm)
This means that the average man in the UK should use a regular fit condom, which isn’t a surprise, as it’s designed to fit the most people.
Why it’s important to get the right condom size
“The importance of finding a condom that fits correctly is often overlooked. Yet a condom that is too loose or too tight is more likely to slip or break. This means you have less protection against unwanted pregnancy and STIs, including HIV.
“Beyond safety, getting something that fits right just feels better. This can help improve your confidence, making the experience more enjoyable for both partners.
“Finding the right size of condom keeps you safe, comfortable and confident – and that’s what good sex should feel like.”
Yes, if you have a latex allergy, there are lots of latex-free condoms available. This means you can practice safer sex without fear of an allergic reaction.
How Chemist4U can help
We understand that for some people, going up to the counter with a pack of condoms can be embarrassing, but it doesn’t need to be.
For those who don’t want to deal with a shopkeeper, we offer a discreet, next-day delivery directly to your door.
Frequently asked questions about condom sizes
What condom size is six inches?
Regular fit condoms tend to be about seven inches long to fit the average penis size between five and seven inches. The more important thing to look for in a condom is that it fits your girth.
Do smaller condoms offer more sensation?
A smaller condom does not mean more sensation – but getting one that fits right will. If you’re looking for condoms that increase pleasure for you or your partner, we’ve covered those in our guide on the best condoms for every need.
What condoms should I get if I’m seven inches?
Most condoms are about seven inches in length, so should be an adequate fit for you. However, you’ll need to make sure that they fit the girth of your penis, which you can tell from the nominal width on the box.
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