Every calculator you need,
in one simple place
Accurate results, clear explanations — Time & Dates, Health, and Finance.
🌍 Browse by world
🏠 World of Home
Construction, building materials, paint, and electricity — all your home calculators interconnected in one place.
📈 World of Investment
Compound savings, average purchase cost, stocks, gold, and currencies — plan your wealth with interconnected tools.
💰 World of Personal Finance & Bills
Loans, customs, discounts, and bill splitting — all your everyday expense calculators interconnected in one place.
💼 World of Salary & Work
Your net salary, end of service, overtime, and retirement — all your work-income calculators in one place.
🏥 World of Health, Fitness & Family
BMI, calories, ideal weight, and pregnancy — all your health and family calculators in one place.
⏳ World of Time & Dates
Age, the difference between two dates, and Hijri-Gregorian conversion — all your time calculators in one place.
🕌 World of Zakat & Inheritance
Zakat on money, zakat on stocks, and Islamic estate distribution — all Sharia financial calculators in one place.
🎓 World of Education & Careers
Cumulative GPA, weighted percentage, and Jadarat points — all your education and career journey calculators in one place.
🧮 World of General Tools
Percentage and size conversion — quick tools you need every day in one place.
⏳ Time & Dates
Age Calculator — Gregorian & Hijri
Calculate your exact age in both the Gregorian and Hijri calendars, with a live countdown to your next birthday, life milestones, and fun facts about your life.
Date Difference Calculator
Calculate the exact difference between any two dates in years, months, and days, with total days, weeks, hours, and business days (excluding Fri/Sat).
Hijri ↔ Gregorian Date Converter
Convert any date between the Hijri and Gregorian calendars precisely (Umm al-Qura), with weekday, distance from today, and day-of-year.
Days Remaining Countdown Calculator
How many days until Ramadan, Eid al-Fitr, Eid al-Adha, or any custom date — a live second-by-second countdown.
Last Third of the Night & Midnight Calculator
Calculate Islamic midnight and the start of the last third of the night (the best time for qiyam and dua) based on your actual Maghrib and Fajr times.
🏥 Health, Fitness & Family
BMI Calculator
Calculate your Body Mass Index, see your WHO classification, your healthy weight range, and how much you'd need to gain or lose to reach it.
Calorie Calculator
Calculate your daily calorie needs (BMR and TDEE) using the Mifflin-St Jeor equation, get your goal calories (cut, maintain, or bulk) with a full macro breakdown and a step-by-step explanation of every number.
Body Fat Percentage Calculator
Estimate your body fat percentage without equipment using the US Navy circumference method, with fat mass, lean mass, and category classification.
Ideal Body Weight Calculator
Calculate your ideal body weight using 4 established medical formulas (Devine, Robinson, Miller, Hamwi) based on height and gender, with the BMI healthy range and comparison to your current weight.
Protein & Macro Calculator
Calculate your daily protein, carb, and fat needs based on your goal, with per-meal protein distribution and practical food equivalents.
Daily Water Intake Calculator
Calculate your daily water needs based on weight, physical activity, climate, and pregnancy/breastfeeding status, converted to cups and bottles.
Keto Diet Calculator
Calculate your daily calories and keto macro split (fat, protein, carbs) based on your weight, height, activity, and goal, using the Mifflin-St Jeor equation, with a safe calorie floor.
Sleep Cycle Calculator
Calculate the best time to sleep or wake up based on 90-minute sleep cycles, so you wake up refreshed instead of groggy.
Ovulation & Fertility Window Calculator
Calculate your expected ovulation day and fertile window for the highest chance of pregnancy, based on your last period and actual cycle length, with a 3-cycle forecast.
Pregnancy & Due Date Calculator
Calculate your expected due date and current gestational week using Naegele's Rule, from last period or conception date, with personalized screening test date windows.
Pet Age Calculator (Cats & Dogs in Human Years)
Calculate your cat's or dog's age in human years accurately using AAHA/AKC veterinary tables, accounting for dog breed size, instead of the inaccurate '×7' rule.
🎓 Education & Careers
GPA Calculator
Calculate your semester and cumulative GPA accurately on a 5.00 or 4.00 scale, and merge your previous cumulative GPA to see your new one instantly.
Weighted Percentage Calculator (Qudrat & Tahsili)
Calculate your university admission weighted percentage from high school, Qudrat, and Tahsili scores using your specific university/major weights.
Jadarat Points Calculator (Administrative Jobs)
Calculate your comparative score for administrative jobs on Saudi Arabia's Jadarat national employment platform — GPA, test, and graduation seniority — and find out what test score you'd need to hit a target total.
💼 Salary & Work
Net Salary Calculator (Saudi Arabia)
Calculate your monthly net salary after GOSI social insurance deductions in Saudi Arabia, for Saudi and non-Saudi employees, including employer contribution and total employer cost.
Next Payday — Saudi Salary Countdown
Track your next Saudi payday with a live countdown. Government-sector salaries are paid on the 27th of the Gregorian month, moved earlier if that date falls on the weekend.
End-of-Service Gratuity Calculator (Saudi Arabia)
Calculate your Saudi end-of-service gratuity precisely under Articles 84 and 85 of the Labor Law — whether by resignation or employer termination — with a full step-by-step breakdown and a look at what your gratuity would be at future eligibility milestones.
Overtime Pay Calculator (Saudi Labor Law)
Calculate overtime pay precisely per Article 107 of the Saudi Labor Law: actual hourly wage plus 50% of the basic hourly wage, with a full breakdown.
GOSI Retirement Pension Calculator
Estimate your GOSI retirement pension under the old or new system, based on your average contributory wage and years of service.
Enhanced Social Security Calculator (Saudi Arabia)
Estimate your monthly Enhanced Social Security (Daman) pension in Saudi Arabia based on family size and earned/unearned income, using HRSD's official calculation formula.
TikTok & YouTube Earnings Calculator
Estimate your monthly ad earnings from YouTube (long-form or Shorts) or TikTok's Creativity Program based on your views, content niche, and audience location — as a realistic range, not a misleading single number.
📈 Investment & Savings
Compound Savings & Investment Calculator
Calculate how your savings or investment grows with compound returns — an initial amount plus regular monthly contributions at an annual rate over time, with a growth timeline and money-doubling estimate.
Average Cost / DCA Calculator
Calculate your current average purchase price for a stock or crypto across multiple buys, project how it changes with a new purchase — or reverse it: find how many units you'd need to buy at a given price to hit a target average.
ROI (Return on Investment) Calculator
Calculate your total ROI, money multiple, and annualized return (CAGR) — with support for extra contributions and fees, plus an optional inflation-adjusted real return.
Gold & Bullion Calculator
Calculate the current value of your gold or bullion at any karat, with automatic per-gram price conversion between karats, and profit/loss vs. purchase price.
Stock Trade Profit Calculator
Calculate your trade's exact net profit — quantity, buy and sell price, commission on both legs, and tax if applicable — with the real break-even price that covers the trade's costs.
Rental Yield Calculator
Calculate the gross and net rental yield on your investment property — automatically factoring in Saudi Arabia's Real Estate Transaction Tax (5%), vacancy and expenses, and how financing affects your actual cash-on-cash return.
Currency Converter
Convert between 20+ world and Gulf currencies using live, auto-updating exchange rates, with the inverse rate and a quick-conversion table.
🕌 Zakat & Inheritance
Zakat Calculator
Calculate your zakat precisely — cash and savings, gold (any karat), trade goods, and debts — with a gold vs. silver nisab comparison, automatic karat conversion, and a full breakdown of your zakatable base.
Zakat on Stocks Calculator
Calculate zakat on your stocks based on your holding intent — trading or long-term investment — per the ruling adopted by major fatwa authorities.
Islamic Inheritance (Fara'id) Calculator
Calculate the Islamic inheritance distribution among core heirs (spouse, father, mother, sons, daughters) per agreed-upon Fara'id rules.
🏠 Home & Construction
Construction & Finishing Cost Estimator (Saudi Arabia)
Estimate the turnkey construction cost of your home or villa based on area, finishing level, and city, with a contingency margin for hidden costs.
Building Materials Quantity Calculator (Block, Cement, Paint)
Calculate the number of blocks, cement bags (mortar and plaster), estimated sand, and paint quantity needed based on your net wall area.
Paint Quantity Calculator
Calculate exactly how many liters of paint you need based on surface length, width, and number of coats, with automatic door/window deduction and standard can-size suggestions.
Home Appliance Electricity Cost Calculator
Calculate the real monthly and yearly cost of any electrical appliance under Saudi Arabia's tiered electricity tariff — accounting for appliances that push you past the first tier (6,000 kWh), which raises their true cost, unlike simple calculators that assume a flat rate.
Ideal Screen Size Calculator (by Viewing Distance)
Calculate the ideal TV or monitor size in inches based on your actual viewing distance, using the THX and SMPTE viewing angle standards.
💰 Personal Finance & Bills
Loan Calculator (Personal & Mortgage)
Calculate your monthly installment for a personal loan or mortgage using the standard amortizing (reducing-balance) formula, with total interest, admin fees, and a principal payoff timeline.
Debt Payoff Calculator
Calculate when you'll be debt-free and how much interest you'll save, comparing the two most common payoff strategies (Avalanche and Snowball) against your actual debts — up to 3 debts, with an optional extra monthly payment.
VAT Calculator (Saudi Arabia)
Calculate VAT easily — add tax to a net amount or extract it from a tax-inclusive price, at Saudi Arabia's 15% rate or any custom rate.
Payment Gateway Fees Calculator
Calculate the net amount you'll actually receive after payment gateway fees (mada, Visa/Mastercard, PayPal, or any gateway), with optional VAT on fees.
Discount & Sale Calculator
Calculate the price after a discount, or work backwards from a sale price to find the original — with support for stacked discounts (sale + coupon), the real effective discount rate, and an optional VAT toggle.
Bill Split Calculator
Split a restaurant bill or any shared expense between multiple people, with tip and VAT handling, plus optional per-person rounding to make cash payment easier.
Customs Duty & Tax Calculator (International Shipments)
Estimate customs duty and VAT on your international shipments to Saudi Arabia, with personal exemption threshold options.
Housing Support Eligibility Checker (Sakani)
Check whether you meet the basic eligibility conditions for Saudi housing support — a preliminary eligibility check, not a precise amount calculator, since the official support matrix isn't published in detail.
Citizen's Account Rough Estimator (Unofficial)
A very rough educational estimate of Citizen's Account support based on household income and dependents — not the official calculator and not a substitute for it.
Fuel Consumption & Trip Cost Calculator
Calculate your trip or daily commute fuel cost based on distance, your car's consumption rate, and fuel price, with support for repeated trips, a fuel-type cost comparison, and a CO2 emissions estimate.
🧮 General Tools
Percentage Calculator
Calculate any percentage operation: X% of a number, what percent X is of Y, percentage change between two values, or the result of increasing/decreasing a value by a percentage.
Clothing & Shoe Size Converter
Convert your shoe or clothing size between international systems (US, UK, EU, cm) for men and women, with foot length in centimeters for the most accurate result when shopping from foreign stores.