About Razi Calculator
Razi Calculator is a free, fast, and privacy-friendly web tool built to bring together the everyday calculations people in Pakistan (and beyond) actually need — scientific, Islamic finance, educational, health, and everyday conversion tools — in a single, offline-ready dashboard.
What you can do here
- Scientific Calculator: standard arithmetic plus square root, powers, logarithm, trigonometric functions, memory keys (MC/MR/M+/M−), and a live PKR result preview.
- Punjabi (Shahmukhi) Calculator: the same scientific calculator with Punjabi-language button labels and full keyboard shortcuts.
- Car Ijara Calculator: estimate monthly rental payments for a Shariah-compliant Car Ijara (Islamic leasing) arrangement.
- Zakat Calculator (Hanafi Fiqh): bilingual (Urdu + English) calculator covering assets, liabilities, Nisab, and recipient eligibility, with multi-currency support.
- Ushar Calculator (Hanafi Fiqh): bilingual calculator for agricultural Ushr, covering natural, artificial, and mixed irrigation rates.
- BMI Calculator: estimate your Body Mass Index from height and weight in metric or imperial units, with a visual healthy-range gauge.
- AI Health Calculator: a rule-based wellness score combining BMI, sleep, activity, and waist-to-height ratio.
- Gym & Diet Planner: calorie and macro targets plus a workout split (3–6 days/week) based on your stats and goal.
- Sleep Calculator: ideal bedtimes or wake-up times based on 90-minute sleep cycles.
- Age & Personality Insight: a lighthearted tool that works out your age, zodiac star sign, and a fun personality snapshot.
- ECAT & MDCAT Merit Calculators: aggregate merit estimates for Pakistani engineering and medical admissions, with editable weightage.
- Percentage & Discount/Tax Calculator: quick percentage-of, what-percent-is, and percentage-change calculators, plus a discount + GST/tax calculator (defaults to Pakistan's standard 18% GST) for retail-style pricing.
- Date Calculator: find the exact difference between two dates (in days, weeks, and years/months/days), or add/subtract days from a date.
- Dropshipping Profit Calculator: estimate per-order and total profit after product cost, shipping, gateway fees, and ad spend.
- Family Budget Calculator: track income against expense categories to see your balance and savings rate.
- Inflation & Wealth Calculator: see how inflation erodes purchasing power, and project compound investment growth.
- Universal Unit & Currency Converter: convert temperature, weight, length, area, volume, speed, time, digital storage, energy, angle, pressure, and power between common units — plus live currency exchange rates.
- Language Converter: convert a number into words in English or Roman Urdu (Lakh/Crore numbering) — handy for cheques and invoices.
- History & Memory: your last 50 calculations and memory value are saved locally in your browser for quick reference.
- Light & Dark Mode: switch themes any time — your choice is remembered on your next visit.
Why it's built this way
Everything runs entirely in your browser. No calculation, financial figure, health detail, or personal figure you enter is ever sent to a server — results are computed on your device and your inputs are stored only in your browser's local storage, so you can clear them any time. The only feature that reaches out to the internet is live currency exchange rates, which are fetched directly by your browser from a public exchange-rate API.
The Age & Personality tool, BMI Calculator, and AI Health Calculator are provided for fun and general informational purposes only — they are not medical, psychological, or astrological advice. The Zakat and Ushar calculators are general educational aids reflecting commonly cited Hanafi fiqh positions; please consult a qualified Islamic scholar or Dar-ul-Ifta for rulings specific to your situation. The Car Ijara, ECAT, and MDCAT calculators are general estimates — actual rates, formulas, and contract terms vary by institution and year.
Who made it
This tool is developed and maintained by Razi Digi. We build small, focused, fast-loading web utilities that work well on any device, including low-bandwidth connections.