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❓ Help & FAQ

Help Center

Everything you need to know about using Saudi Calculators. All 20 tools are free, private, and browser-only.

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Islamic Calculators

Use our Islamic tools to calculate Zakat, distribute inheritance via Faraid rules, convert Hijri dates, and find prayer times for major Saudi cities.

  • Enter your total assets for Zakat
  • Input heirs for inheritance shares
  • Pick any date to convert to Hijri
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Finance Calculators

Calculate your net Saudi salary after GOSI deductions, plan a mortgage, value your gold, or estimate your monthly living costs in Riyadh or Jeddah.

  • Choose Saudi national or expat for GOSI
  • Use current gold price per gram
  • Mortgage uses monthly compound interest
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Car & Fuel Tools

Estimate fuel costs for any Saudi road trip (e.g. Riyadh to Jeddah = 985km), calculate car loan installments, or check traffic fine estimates.

  • Select fuel type for 2026 KSA prices
  • Car loan uses reducing balance method
  • Traffic fines based on 2026 KSA law
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Lifestyle Tools

Find your abaya size, estimate perfume longevity based on concentration and skin type, calculate BMI, or add/remove Saudi VAT from any price.

  • Abaya sizing uses height + BMI method
  • Perfume includes oud oil option
  • VAT rate is 15% (Saudi standard)

Frequently Asked Questions

Yes, all 20 calculators are 100% free with no account, subscription, or payment required. We sustain the project through carefully selected affiliate links to products relevant to each calculator.
No. Every calculation runs entirely in your browser using JavaScript. Your salary figures, gold values, Zakat amounts, and inheritance details are never transmitted to our servers. Only your language and theme preferences are saved locally in your browser.
The Zakat calculator uses the 2026 Nisab threshold based on 85 grams of gold. The calculation follows the standard 2.5% rate on total zakatable assets. For your specific financial situation — especially with complex business assets or debts — consult a qualified Islamic scholar or Zakat office.
The inheritance calculator follows standard Sunni Faraid rules for the most common scenarios — wives, sons, daughters, and father shares. Complex cases involving multiple generations, grandparents, siblings, or bequests (wasiyyah) require consultation with a qualified Islamic scholar or court.
Use the EN / ع buttons in the top-right header on any page. The site will instantly switch languages and flip to right-to-left (RTL) layout for Arabic. Your language preference is saved automatically for your next visit.
The Gold Value calculator asks you to enter the current gold price per gram (in SAR) yourself. This ensures you always use the most accurate live price. You can find today's gold price from Saudi Tadawul, local jewellers, or gold price tracking websites.
The Prayer Time Finder shows approximate annual average times for major Saudi cities. Prayer times vary daily based on the sun's position. For precise daily prayer times, please refer to the official Umm Al-Qura calendar or a dedicated prayer time app.