Hindi is an Indo-Aryan language about 1200 million worldwide highest speakers in the world, after that Mandarin about 1030 million. It is also spoken in all parts of India, as well as Indian subcontinents in Nepal, Bangladesh and Pakistan. Hindi is also understood, and there are a significant number of Hindi speakers in South Africa, Mauritius, Fiji, Suriname, Guyana, Trinidad & Tobago and Nepal. Urdu is a linguistic style of Hindi and it is also closely related to Hindi, Urdu is the main language of Pakistan, which is written with the Arabic script, and linguists consider Standard Hindi and Standard Urdu to be different formal registers both derived from the Khari-Boli dialect, which is also known as Hindustani.