How many people are estimated to be converted worldwide at this time?

Christian population growth is the population growth of the global Christian community. According to a 2011 Pew Research Center survey, there were 2.3 billion Christians around the world in 2010, more than three times as many as the 600 million recorded it 1910. However, this rate of growth is slower than the overall population growth over the same time period.[1] According to a 2015 Pew Research Center study, by 2050, the Christian population is expected to be 2.9 billion.[2]

The average Christian fertility rate is 2.7 children per woman, which is higher than the global average fertility rate of 2.5. Globally, Christians were only slightly older (median age of 30) than the global median age of 28 in 2010. According to Pew Research religious switching is projected to have a modest impact on changes in the Christian population.[3] According to the World Christian Encyclopedia, approximately 2.7 million convert to Christianity annually from another religion; World Christian Encyclopedia also stated that Christianity ranks in first place in net gains through religious conversion.[4] While, according to "The Oxford Handbook of Religious Conversion", approximately 15.5 million convert to Christianity annually from another religion, approximately 11.7 million leave Christianity annually, and most of them become irreligious, resulting in a net gain of 3.8 million.[5] Christianity adds about 65.1 million people annually due to factors such as birth rate and religious conversion, while losing 27.4 million people annually due to factors such as death rate and religious apostasy. Most of the net growth in the numbers of Christians is in Africa, Latin America and Asia.[5]