حاسبة الميراث (الفرائض)

This covers a spouse, sons, daughters, father and mother. It does not distribute grandparents, siblings, grandchildren or the wider agnatic heirs, because their blocking rules interact in ways a simplified tool gets quietly wrong.

This is arithmetic on the shares fixed in the Quran, not a legal ruling. A real estate involves debts, bequests, jointly owned property and the law of the country you are in. Use this to understand the shape of the division, and take the actual division to a scholar and, where the estate is significant, to a lawyer.