Religion

Adherents

Percentage

Christianity

2.382 billion

31.11%

Islam

1.907 billion

24.90%

Secular[a]/Nonreligious[b]/Agnostic/Atheist

1.193 billion

15.58%

Hinduism

1.161 billion

15.16%

Buddhism

506 million

5.06%

Chinese traditional religion

394 million

5%

Sikhism

26 million

0.30%