How many Jews convert to Christianity a year?

Answer 1

There are no reliable numbers for such conversions. It can be assumed that, as the number of atheists/agnostics/no religions on census results and polls for Eurpope and North America grows each year, that the number is smaller than the number of people abandoning their religious affiliation in those areas. SImilarly as atheists could convert from that demographic to be Hindus, Jains, Jews, Moslems, Pastafarians etc., the number particularly converted to Christianity is even more shrouded.

Answer 2

People do not "convert" to Atheism, because there is no central authority of atheist opinion to swear allegiance to as there is with some religions, nor the typical habitual practices that most religions demand. There are moral atheists and amoral atheists. If you were asking for example "How many people lose their trust or faith in the Roman-Catholic church in a year?" you might be closer to an answerable question.

Answer 3

A number is hard to come to but the attached link speculates over 100,000 in the 19th Century. It would depend on the time period - critical against Jews or not so much. In any event, there are many new groups with a mission to convert Jews - Jews for Jesus, Messianic Jews, etc. They are being countered by the ADL and the state of Israel to name just two here.

Mixed religious marriages find one party switching to the others belief system - and this goes either way: Jew to Christian or Christian to Jew.