Stamina Percentile CheckerWhere your lasting time ranks among men.

1. 01

   Time from the moment of penetration to ejaculation

   Foreplay is not included. Studies measure exactly this interval (IELT) with a stopwatch. A phone timer is fine.

2. 02

   Enter your usual average

   A single time is noisy. Use the middle value of your last three or so. Leave out the first time after a long break or a night of drinking.

3. 03

   Don't count sessions you stopped on purpose

   Sessions where you paused or withdrew deliberately are excluded in the research too. Only count the ones you finished.

Rank is based on the stamina T-score. 50 is the median (5 min 24 s). Times are right-skewed, so the score is computed on a log scale.

1. SSIron man22 min 20 s+0.2%
2. STough15 min 40 s+2%
3. ALong-lasting10 min 59 s+8%
4. B+A bit longer7 min 42 s+24%
5. BDead average3 min 47 s+76%
6. CA bit shorter2 min 39 s+92%
7. DShort1 min 52 s+98%
8. EQuick draw< 1 min 52 s

• The baseline: 491 men, stopwatch-timed, five countries

  Waldinger et al. (2005, The Journal of Sexual Medicine) had 500 stable couples in the Netherlands, UK, Spain, Turkey and the US time intercourse with a stopwatch for four weeks. Median 5.4 minutes, range 0.55–44.1. The 0.5th percentile was 0.9 min and the 2.5th was 1.3 min. A 2009 replication (474 men) found a median of 6.0 minutes.

• The distribution is right-skewed

  The short end bunches up around one minute while the long end stretches to 30 or 40 minutes. A plain mean and SD would be distorted, so we take the log of the time and treat it as normal (median 5.4 min, log SD 0.71).

• It drops with age

  In the same survey, men aged 18–30 had a median of 6.5 minutes and men over 51 had 4.3. We don't adjust for age, so younger men are scored a little strictly and older men a little generously.

• Surveys run long

  Self-reported surveys often put the average at 10–15 minutes; with a clock it settles at 5–6. We only use measured data.

Median

5 min 24 s

0.5%

0 min 54 s

2.5%

1 min 18 s

Waldinger MD, Quinn P, Dilleen M, Mundayat R, Schweitzer DH, Boolell M. A multinational population survey of intravaginal ejaculation latency time. The Journal of Sexual Medicine 2005; 2(4): 492-497. doi:10.1111/j.1743-6109.2005.00070.x
Waldinger MD, McIntosh J, Schweitzer DH. A five-nation survey to assess the distribution of the intravaginal ejaculatory latency time among the general male population. J Sex Med 2009; 6(10): 2888-2895. doi

Does foreplay count?

No. Only the time from penetration to ejaculation.

What about sessions where I edged to last longer?

Exclude sessions you stopped on purpose. Use the average of the ones you finished.

Is my result stored?

No. Everything is calculated on your device and nothing is sent to our server. The share link contains your time, so choose who you send it to.

My score is low. Is it premature ejaculation?

The number only shows your position in the distribution. The clinical definition requires ejaculating within about a minute nearly every time and being distressed by it; time alone doesn't decide it. A urologist can help if it worries you.

Is longer better?

Partner satisfaction doesn't track duration closely. Research links satisfaction more to a sense of control than to minutes.