Run Game Practice

Condoms and contraception: what guys should know

6 min read

Two numbers describe how well a condom prevents pregnancy, and they're far apart. That gap is the whole story. How well condoms work on paper depends on using one correctly every single time. How well they work in real life includes the times people don't.

This is general information from public health sources, not medical advice. A doctor, nurse or pharmacist can answer questions about your own situation.

The numbers, as each source states them

Sources describe condom effectiveness in different ways, so here's each one in its own words.

Source What it says
CDC, "Contraception and Birth Control Methods" (August 6, 2024) Male condoms: "Typical use failure rate: 13%." The page gives no perfect-use figure.
NHS, "Male condoms" (last reviewed 26 January 2024) "Condoms are up to 98% effective at preventing pregnancy if you use them correctly every time you have sex." If not used correctly, they're "82% effective."
Planned Parenthood, "Condom" "87% effective." The page gives no separate perfect-use figure.

Read together, they line up. 13% failure and 87% effective are the same number said two ways. The NHS gives both ends: up to 98% when used correctly every time, 82% when not.

The CDC labels its figures "typical use," which means how people actually use condoms, including slips, late starts and skipped times. The CDC's footnote cites the textbook Contraceptive Technology (22nd edition, 2023). Different sources count slightly differently, so treat these as ballpark figures, not promises.

Why typical use is lower

The CDC says condoms can break, slip or leak, and that when they're used incorrectly or inconsistently, STDs or HIV can spread from a single sex act. A few details from its instructions and the NHS's:

None of that is complicated. The part that fails is usually timing and nerves, and the fix is boring: practice getting one on when you're alone and relaxed, so it isn't the first time in the moment.

Condoms and STIs

Pregnancy is one risk. Infections are the other. The CDC says condoms protect against infections spread through genital fluids such as gonorrhea and chlamydia but "will not provide protection against STDs spread by skin-to-skin contact (genital herpes or syphilis)." Planned Parenthood says lambskin condoms "do NOT protect against STDs." The full picture, including testing and telling a partner, is in STIs, testing and safe sex.

Other options for men

The CDC's contraception page lists a few that involve the male partner.

Many other methods, such as the pill, an implant or an IUD, are used by the partner who can get pregnant. The NHS calls condoms "the best way to protect you and your partner from HIV and other STIs," so ask whether infections are a concern before treating another method as a replacement. Asking "what are you using, and are you comfortable with it?" is a normal question, and you can offer your half of the answer.

Shared responsibility, and talking first

Contraception is easier to talk about before anyone is undressed. A few ways to open it, and you can use your own words:

If one person doesn't want to use a condom, that's a conversation, and "no condom" is a decision both people make or it doesn't happen. Removing a condom without your partner knowing breaks the agreement you made, so it's a consent issue. That's all the lecture there is. Consent and respect covers the broader rule, and boundaries in a relationship covers saying what you need without it becoming a fight.

For casual situations specifically, casual dating expectations covers being clear about what each person wants. Sorting out protection before you're in the moment is part of being a good partner.

Emergency contraception

If a condom breaks or sex happens with no protection, emergency contraception exists. The CDC says emergency contraception "is not a regular method of birth control." Its details:

The NHS (last reviewed 31 January 2024) adds that levonorgestrel needs to be taken within 3 days (72 hours) and ulipristal acetate within 5 days (120 hours). It says "the IUD is the most effective type of emergency contraception" and that you can get it from most sexual health clinics, most GP surgeries, and "most pharmacies" for the pill. A pharmacist can tell you which pill suits the situation. If you're the one who isn't getting pregnant, offering to help find a pharmacy or cover the cost is a decent thing to do, and it's her decision.

Emergency contraception doesn't protect against STIs. If a condom failed, testing is also worth thinking about.

When to see a doctor

See a doctor or clinic about contraception if you're deciding on a method, thinking about a vasectomy, or had an unprotected encounter and aren't sure what to do next. A condom that broke and a period that's late are both reasons to ask, soon.

What to do next

  1. Buy condoms before you need them, and check the packet instructions and expiry date.
  2. Practice putting one on once, alone, so the first time isn't the real one.
  3. Pick a line for bringing it up before any physical situation, and say it early on the date, not at the door.
  4. Learn the emergency contraception window above (5 days for pills and the copper IUD, 3 days for levonorgestrel) and where the nearest pharmacy or clinic is.
  5. If you want a long-term plan, book a doctor visit to talk about all the methods, including vasectomy if you're sure you don't want children.
  6. Test for STIs on the schedule a clinician suggests, with or without condom slips.

Sources