There are between 49 and 51 Muslim-majority countries in the world, according to estimates from 2010. The fluctuation is a result of the changing demographics in countries where Muslims comprise around 50 percent of the ... More »

At the end of 2012, there were about 1.6 billion Muslims worldwide. This accounts for about 23 percent of Earth's population. It is the world's second-most common religion after Christianity. More »

As of 2014, there are 1.6 billion Muslims in the world. That number is expected to grow to 2.2 billion by 2030. Islam, the religion practiced by Muslims, is the second-largest religion in the world. More »

To become Muslim, observe the Five Pillars of Islam. Start by bearing witness, thus converting to Islam. Pray five times a day, fast during the month of Ramadan, give to charity, and make the pilgrimage to Mecca, if poss... More »

A Muslim caliphate is an Islamic state led by a supreme religious leader who also acts as political leader of the state. The caliphate is ruled by a caliph who oversees the affairs of the people and government in accorda... More »

A robe worn by a Muslim woman is called an abaya or a jilbab, and men wear what is called a thwab. Generally, these robes are worn daily, over clothing. More »

Muslims do not celebrate baptism in the Christian sense. Islam challenges the authority of baptism, citing the Quran's declaration that participation in the religion is itself the baptism of Allah. There are similar ritu... More »