Background: The purpose of the current study was to examine the characteristics of those who report fulfilment of sexual desires as a result of internet use for sexual purposes and which sexually related online activities contribute to the fulfilment of sexual desires. Methods: Data were collected through a questionnaire posted on Swedish language websites in 2009. The sample comprised 1614 respondents who reported using the internet for sexual purposes, 62% women and 38% men. Results: The results showed that the majority of the respondents had their sexual desires fulfilled as a result of their sexually related activities on the internet; 21% to a great extent and 59% to a small extent, but 20% did not have their sexual desires fulfilled. Using a multinomial logistic regression analysis, respondents who had their sexual desires fulfilled to a small or great extent were each compared with those who did not have their sexual desires fulfilled at all. At the level of individual characteristics and sexual behaviours, those with no fulfilment of their sexual desires did not differ from those who had their sexual desires fulfilled, with the exceptions of age and masturbation. In comparison to fulfilment to a small extent, fulfilment of sexual desires to a great extent was predicted by a larger number of sexually related online activities that were based on interaction.Conclusion: The findings suggest that the internet may contribute to fulfilment of sexual desires among a large internet population, irrespective of sex or sexual identity.