Body Count Percentile CheckerWhere your number ranks among men your age.

1. 01

   Women you've had sex with

   A one-time partner counts as one. The same person counts once no matter how many times.

2. 02

   Roughly is fine

   The survey relies on self-report too. Few people count precisely past ten, so your best recollection is enough.

3. 03

   Pick an age group

   Counts build up with age. Five partners at 22 and five at 45 sit in different places, so compare with your own age group.

Rank is based on the body count T-score. The counts below are guides when comparing with All ages (16–74). Because counts are whole numbers, the score can jump a step at a boundary.

1. SSSeasoned veteran79+2%
2. SVery experienced41–787%
3. AAbove average21–4016%
4. B+A bit above11–2031%
5. BDead average3–1069%
6. CA bit below284%
7. DBelow average193%
8. ESelective0

• The baseline: Natsal-3, Britain's national survey

  Natsal-3 visited randomly selected households across Britain (2010–12, ages 16–74, 15,162 respondents including 6,293 men, response rate 57.7%). Sensitive questions were answered directly on a computer, unseen by the interviewer. Results were published in The Lancet (2013).

• The distribution for men

  Lifetime female partners: 0 — 5.5%, 1 — 13.7%, 2 — 8.4%, 3–4 — 15.0%, 5–9 — 23.5%, 10 or more — 33.9%. Median 6 (IQR 2–12), mean 14.1. The mean is pulled up by a few very high counts, so the median is the better midpoint.

• Positions above ten are estimated

  The paper's top band is “10 or more”. Positions within it are estimated from the tail of a log-normal distribution fitted to the 0–9 bands. For all ages the fitted quartiles are 2, 6 and 13, close to the published 2, 6 and 12.

• Inexperience is more common in Japan

  A 2022 survey of 8,000 people aged 20–49 in Japan (The Journal of Sex Research) found 19.8% of men had never had a sexual partner. Among British men aged 25–54 the share with zero is 1.5–5.2%, so a Japanese man may score lower here than he would against Japanese data.

Distribution by age

Mercer CH, Tanton C, Prah P, Erens B, Sonnenberg P, Clifton S, et al. Changes in sexual attitudes and lifestyles in Britain through the life course and over time: findings from the National Surveys of Sexual Attitudes and Lifestyles (Natsal). The Lancet 2013; 382(9907): 1781-1794. doi:10.1016/S0140-6736(13)62035-8
Ghaznavi C, Ueda P, Okuhama A, Sakamoto H. Sexual Behaviors among Individuals Aged 20-49 in Japan: Initial Findings from a Quasi-Representative National Survey, 2022. The Journal of Sex Research 2024; 61(1): 9-20. doi

Who counts as one?

Each woman you've had sex with. The same person counts once no matter how many times.

Why choose an age group?

Counts rise with age. In Natsal-3 the median is 3 for men aged 16–24 and 8 for ages 35–54. Comparing within your age group keeps the position fair.

Is my result stored?

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

Is higher better?

The number only shows your position in the distribution; neither high nor low is better. If you have many or new partners, regular STI testing is a good idea.

What if my number is zero?

Against all ages it's around the bottom 3% (rank E). Against ages 16–24 it's very different, because about one in five men that age report zero.