Is there a single website where one can get to know about all upcoming international conferences? It's very important for a research professional (such as a Statistician) who needs to work on multidisciplinary fields to attend international conferences and see what's going around in the field of research. However, sometimes information contained in the websites about the upcoming conferences are too subject specific (e.g. there's so many related to computer science). 

Is there any website that 'gathers information' (rather than just providing information from the user submitted ones) on all conferences irrespective of particular subject areas?

If there is any website about conferences that is related to Statistics and the fields which has its use, it'll do for me as well. Thank you for your reading.
One possibility is www.conferencealerts.com. It has conferences listed by categories, including one for mathematics and statistics here. You can get periodic alerts in your inbox based on the topics you are interested.