What it is

An Islamic inheritance calculator that shows its work

Tell it who the person left behind. It applies the rules of Fara'id, gives each heir their share and cites the verse each share comes from. It's free, and what you enter stays on your device.

Start a calculation →

No account needed. Works offline once loaded.

How the rules work Want the iPhone app? Join the waitlist.

Pick a sample family

Estate receipt A man dies and leaves: Wife, 2 sons, 1 daughter.

Heir	Share	Of estate	Verse
Wife	1/8	12.5%	4:12
Son × 2	7/10	70%	4:11
Daughter	7/40	17.5%	4:11

The fixed shares are paid first. Sons and daughters split what's left, and each son gets twice what each daughter gets.

Open this family in the calculator

What it answers

“my father left a wife, two sons and a daughter. who gets what?”
“does the grandfather inherit if the brothers are alive?”
“what changes under the Hanafi school?”
“the shares add up to more than the estate. now what?”

The six shares

The six shares named in the Quran

Surah an-Nisa sets out six fixed fractions. Heirs who don't get one of them, like sons, take whatever is left once the fixed shares are paid.

The husband, if there are no children. A single daughter with no son. One full sister on her own.

An-Nisa 4:11, 4:12, 4:176

The husband, if there are children. The wife, if there are none.

An-Nisa 4:12

The wife, if there are children.

An-Nisa 4:12

Two or more daughters with no son. Two or more full sisters.

An-Nisa 4:11, 4:176

The mother, with no children and fewer than two siblings. Two or more maternal siblings, split between them.

An-Nisa 4:11, 4:12

The father or mother, if there are children. A single maternal sibling.

An-Nisa 4:11, 4:12

Five schools

The five schools of thought

The schools agree on the fixed shares. They differ on a handful of cases, like a grandfather inheriting alongside brothers. Pick a school before you start, or put all five next to each other for the same family.

For professionals

If you handle estates for other people

FairShare Pro keeps each family's case in one place, with named heirs, real amounts after debts and bequests, and a PDF on your own letterhead. It's $9 a month or $89 a year.

See Pro plans → For attorneys For scholars

A folder for each family: Keep several estates under one client, with notes, tags, hearing dates and a record of every change.
Real amounts for named heirs: Add each heir by name and enter the gross estate, debts and bequests. FairShare checks that bequests stay within the one-third limit, then divides what's left.
PDFs on your letterhead: Every export carries your firm's name, color and signature block, with the disclaimer in English and Arabic.
Compare the five schools: If a family follows more than one school, see the General, Hanafi, Maliki, Shafi'i and Hanbali results next to each other.

Educational use only. FairShare shows how an estate would be divided under the classical rules of Fara'id. For a real estate, talk to a qualified mufti, and to a licensed attorney about the legal and tax side where you live.