Free tools
Work it out yourself.
Calculators that show their working, so you leave understanding the method rather than just holding a number. Everything runs in your browser — nothing is sent anywhere, and nothing is stored.
- No signup
- Nothing stored
- Method always shown
For what you already hold
Three questions, in order.
They are a sequence, not a menu. Screening comes first because if a company fails there the rest is moot; purification comes before zakat because unpurified income inflates the base you calculate zakat on, so the other way round overstates what you owe.
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1 Step 1 of 3
Shariah screening checklist
Check a company against all four screening standards at once — AAOIFI, Dow Jones, FTSE and MSCI — and see why they can disagree.
First, because if the business itself fails the screen nothing further matters. Four respected standards, and they do not always agree.
“Can I own this company, and which standard says so?”
Open the calculator -
2 Step 2 of 3
Purification calculator
Calculate the portion of investment income to purify, and how to work it out yourself next time.
A company can pass the screen and still earn some impermissible income. Your share of that is not yours to keep.
“How much of this income do I need to purify?”
Open the calculator -
3 Step 3 of 3
Zakat calculator
Work out zakat across cash, gold, investments, property and crypto — with the full method shown, not just a number.
Last, and only after purifying — unpurified income inflates the base, so doing these the other way round overstates your zakat.
“How much zakat do I owe, and how is it worked out?”
Open the calculator
Before any of that
Deciding to start.
The three above are about what you already own. This one is about the decision that comes before them — and the cost of putting it off.
And after
Passing it on.
What the Islamic rules do with an estate once someone has died, across all four schools at once. It shows shares; it does not write a will, and the law where you live may override it entirely.
Why these show their working
Most calculators hand you a figure and stop. That is fine if you only ever need the figure once — but it leaves you dependent on the tool, and none the wiser. Ours show every line of the arithmetic and explain what each one is for, because the point is that next year you can do it without us.
They are also educational, not advisory. They do not know your situation, and nothing they produce is a recommendation.
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