Zakat is one of the 5 pillars of Islam, and an obligatory act. Read more about Zakat calculator in Islam, Zakat For namaz, Zakat 3 times a year and Zakat.This is a complete guide for Muslim Zakat, means giving or charitable donation. Learn How Zakat is calculated for Muslims and what is one of the five pillars of Islam.Zakat is an obligatory act of giving to the poor and needy by every adult financial Muslim who is able to do so.