Mawarith Pro calculates each heir's share of an Islamic inheritance with exact fractions — and explains the ruling behind every share, so you understand why, not just how much.
When a Muslim passes away, the wealth they leave behind — property, savings, business shares, personal belongings — does not simply pass to whoever is closest or loudest. It is an amānah (a trust) governed by a body of law that the Qurʾān itself lays out in unusual detail. Few subjects in the Sharīʿah are specified with such numerical precision, which is why the Prophet ﷺ called the science of inheritance "half of knowledge."
The Qurʾān names the heirs and fixes many of their shares directly:
يُوصِيكُمُ ٱللَّهُ فِىٓ أَوْلَـٰدِكُمْ ۖ لِلذَّكَرِ مِثْلُ حَظِّ ٱلْأُنثَيَيْنِ "Allah instructs you concerning your children: for the male, what is equal to the share of two females." — Sūrat al-Nisāʾ 4:11
Getting the division right matters in this life and the next. An incorrect distribution can mean an heir is denied a right Allah granted them, or given wealth that was not theirs to take. Mawarith Pro exists to make the correct division clear, transparent, and easy to verify — for families, students of knowledge, and anyone settling an estate.
Most online calculators hand you a percentage and stop. Mawarith Pro shows the working, names the ruling, and flags the cases scholars debate.
Shares are computed with true rational arithmetic — 1/6, 2/3, 1/8 — then converted to your currency only at the final step. ʿAwl and radd are handled by raising the common denominator, exactly as the books of farāʾiḍ teach.
Beside each heir you'll see why they receive their portion: the Qurʾānic verse, the blocking rule, or the residuary logic. It is a teaching tool as much as a calculator.
Where the four schools differ — the grandfather with siblings, al-Akdariyya, al-Mushtaraka — the tool says so and advises a scholar rather than pretending certainty.
The engine knows that a son excludes the grandfather's siblings, that the mother excludes the grandmothers, and dozens of other exclusion rules — so you never over- or under-count heirs.
Enter an estate value in any major currency to see real amounts. Everything runs in your browser — no estate details are ever uploaded or stored.
The calculator sits alongside in-depth guides and worked examples covering the spouse, parents, daughters, siblings, and the doctrines of ʿawl and radd.
Heirs named in the Qurʾān with set portions — the spouse, parents, daughters, certain siblings — receive their fixed fraction first: 1/2, 1/4, 1/8, 2/3, 1/3, or 1/6.
Nearer heirs exclude more distant ones. A son blocks the grandchildren and the siblings; the father blocks the grandfather; the mother blocks the grandmothers.
Whatever is left after the fixed shares goes to the residuary heirs — typically the sons, father, or brothers — with males generally taking twice the share of females in the same class.
If the fixed shares add up to more than the estate, ʿawl reduces them proportionally. If a surplus remains with no residuary, radd returns it to the fixed-share heirs.
Plain-language guides to the rulings that the calculator applies.
From the rights that come before inheritance to the order of heirs — the whole system explained in one read.
HeirsThe 1/2, 1/4 and 1/8 rules for spouses, how children change the share, and what happens with multiple wives.
HeirsAddressing the most common question and misconception — with the Qurʾānic text and worked examples.
DoctrinesWhat happens when the shares don't add up to one — the two great balancing doctrines of farāʾiḍ.
PracticalThe one-third bequest, why every Muslim needs a will in a non-Muslim country, and how to keep it Sharīʿah-compliant.
PracticalFrom skipping debts to misjudging the grandfather's share — the errors that lead to injustice, and how to avoid them.
Enter your heirs, get an exact division backed by the Qurʾān and Sunnah, and see the reasoning behind every share.