How many are Christians?
Photo Credit: Courtesy of 3DStockPhoto (are image)
According to 2011 Pew Research Center survey, there are 2.18 billion Christians around the world in 2010, up from about 600 million in 1910. According to 2015 Believers in Christ from a Muslim Background: A Global Census study estimates 10,283,700 Muslim converted to Christianity around the world.