🧮 53 calculators available accurate & trustworthy

Every calculator you need,
in one simple place

Accurate results, clear explanations — Time & Dates, Health, and Finance.

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🗺️ Comprehensive step-by-step guides

All guides →

Not just one calculator — each guide brings together interconnected calculators around one goal, arranged in the right order from the first step to the last.

🏠
🧩 5 calculators

Guide to Buying & Financing a Home in Saudi Arabia

Calculate your purchasing power, mortgage installment, housing support, and construction and finishing cost — every calculator you need before you sign.

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🧩 7 calculators

Guide to Weight Loss & Building a Healthy Eating Plan

Calculate your BMI, body fat percentage, calories for your goal, protein and water needs, and compare keto against other methods.

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🧩 6 calculators

Beginner's Guide to Starting to Invest

Calculate your savings growth with compound returns, a DCA strategy for average purchase price, your actual investment return, and compare gold against stocks.

🚗
🧩 4 calculators

Guide to Buying & Financing a Car on Installments

Calculate your personal car financing, actual monthly fuel cost, and payment fees if any — to know the real cost before you sign.

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🧩 5 calculators

Guide to Calculating Your Full Salary & Employment Benefits

Calculate your net salary after insurance, end-of-service gratuity, overtime pay, and your expected retirement pension.

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🧩 3 calculators

Comprehensive Zakat Guide (Money, Stocks, Inheritance)

Calculate zakat on money, gold, and savings, zakat on stocks based on your intent, and the Islamic distribution of an estate among heirs — based on the adopted jurisprudential opinion.

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🧩 3 calculators

Guide to University Admission & Applying for Government Jobs

Calculate your GPA, your weighted university admission percentage, and your ranking score for administrative jobs via Jadarat.

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🧩 4 calculators

Guide to Pregnancy & Family Planning

Calculate your ovulation and fertility window, your precise expected due date, and your daily water needs during pregnancy.

⏳ Time & Dates

🏥 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

💼 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

🏠 Home & Construction

💰 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