Nisab weights
The nisab is the value of a set weight of gold or silver. Trusted bodies convert the original 20 dinars and 200 dirhams slightly differently, so the calculator lets you choose:
Sources and method
Every rule in the calculator and the guides comes from published guidance by the bodies below. Where they disagree, we say so and show which one a result used. The calculator is an estimate, not a fatwa.
| Weights from | Gold | Silver |
|---|---|---|
| National Zakat Foundation (UK) | 87.48 g | 612.36 g |
| Zaytuna College (US) | 85 g | 595 g |
| Diyanet (Turkey) | 80.18 g | 561.2 g |
Prices
Gold and silver prices come from gold-api.com and currency rates from the Exchange Rate API, fetched by your browser. A dated copy is kept in the page in case either is unreachable. You can type your own price, for example your jeweller's.
Review
The rules are taken from the sources below as written. A review by a scholar is planned before launch, and this page will name the reviewer once it is done. If you find an error, please tell us through the contact page.
Zakat sources
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Nisab weights, the four steps, what counts, the 25% shortcut for shares, pensions by asset allocation, crypto, business assets, which debts you can deduct.
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How the schools treat jewellery, zakat due when wealth equals or exceeds the nisab, the 40% proxy for past years, mortgages, unpaid zakat as a debt.
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Defined-benefit (final salary) pensions.
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Nisab weights and sample prices used in our worked examples.
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The gold and silver standards, the Hanafi rule on the lunar year, retirement funds after tax and penalties, shares at value.
- Diyanet İşleri Başkanlığı, İlmihal (as cited by Turkish sources) (DIB)
Nisab weights for Turkey. We have not yet confirmed these from Diyanet directly.
Zakat al-fitr, fidya and kaffarah
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Zakat al-fitr of $10 per person and fidya of $15 per missed fast for 2026.
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Who pays fidya, and £7 per missed fast.
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Fasting 60 days first; otherwise feeding 60 people, £420 per fast.
- Diyanet 2026 fitre and fidye amount (240 TL), as reported in the Turkish press (DIB-26)
The Turkish lira amount. Not yet confirmed from Diyanet directly.
Islamic inheritance
- The Qur'an, 4:11, 4:12 and 4:176 (QUR)
The fixed shares of spouses, children, parents and full siblings.
- The classical rules of awl, radd and the two Umariyyatan cases, as summarised in published guides (FAR-SEC)
How shares are reduced or returned when they do not add up to the estate. To be confirmed by a scholar against a classical text.
Hijri calendar
- The Umm al-Qura calendar, as built into web browsers (UQ)
Every Hijri date on the site, checked against known dates (for example 1 Ramadan 1447 = 18 February 2026).