Financial
Loan Calculator
Monthly payment, total cost and interest for any loan.
FinancialMortgage Calculator
Home loan payment with down payment included.
FinancialCompound Interest
How your money grows with compounding.
FinancialSimple Interest
Interest on principal only, no compounding.
FinancialInvestment Calculator
Future value with monthly contributions.
FinancialInflation Calculator
What today's money will be worth later.
FinancialDiscount Calculator
Final price and savings after a discount.
FinancialVAT Calculator
Add tax to a net price.
FinancialSalary Calculator
Annual ↔ monthly, weekly and hourly pay.
FinancialTip Calculator
Split the bill and tip fairly.
FinancialZakat Calculator
2.5% of net zakatable wealth.
FinancialCurrency Converter
Convert currencies using updated reference exchange rates.
FinancialEnd of Service Benefit (Saudi)
Saudi Labor Law Articles 84 & 85 — termination and resignation.
FinancialGOSI Contributions (Saudi)
Employee and employer social insurance shares.
FinancialOvertime Pay (Saudi)
150% of the basic hourly wage per the Labor Law.
FinancialReal Estate Transaction Tax (Saudi)
5% RETT with first-home state support up to SAR 1M.
FinancialBreak-even Point
Units and revenue needed to cover fixed costs.
FinancialProfit Margin & Markup
Profit, margin on price and markup on cost.
FinancialROI & Payback
Annual return on investment and payback period.
Health & Fitness
BMI Calculator
Body mass index and weight category.
Health & FitnessBMR Calculator
Calories your body burns at rest.
Health & FitnessCalorie Calculator
Daily calories to maintain, lose or gain.
Health & FitnessBody Fat Calculator
US Navy method estimate.
Health & FitnessIdeal Weight
Estimate by height and gender.
Health & FitnessDue Date Calculator
Pregnancy due date from last period.
Health & FitnessWater Intake
How much water to drink daily.
Health & FitnessPace Calculator
Running pace and speed.
Health & FitnessBlood Sugar Converter
Convert glucose between mg/dL and mmol/L.
Health & FitnessHeart Rate Zones
Max heart rate and training zones by age.
Math
Percentage Calculator
Percent of, percent change and more.
MathFraction Calculator
Add, subtract, multiply, divide fractions.
MathQuadratic Solver
Roots of ax² + bx + c = 0.
MathPythagorean Theorem
Hypotenuse from two sides.
MathCircle Calculator
Area, circumference and diameter.
MathStatistics Calculator
Mean, median, standard deviation.
MathGCF & LCM
Greatest common factor, least common multiple.
MathRandom Numbers
Generate random numbers in a range.
Engineering & Construction
Concrete Volume
Slab volume in cubic meters and approximate weight.
Engineering & ConstructionRebar Weight
Steel bar weight from diameter and length (d²/162).
Engineering & ConstructionPaint Calculator
Liters needed from wall area, coats and coverage.
Engineering & ConstructionTile Calculator
Tiles needed for a room including 10% waste.
Engineering & ConstructionAC Size (BTU) Calculator
Cooling capacity for a room in BTU and tons.
Other
Age Calculator
Exact age in years, months and days.
OtherDate Difference
Days and weeks between two dates.
OtherGPA Calculator
Weighted grade point average.
OtherUnit Converter
Length, weight and temperature.
OtherLength Converter
Convert between metric, imperial and scientific length units.
OtherWeight Converter
Convert between metric, imperial and other weight units.
OtherFuel Cost
Fuel needed and cost of a trip.
OtherPassword Generator
Strong random passwords.
OtherRoman Numerals
Convert numbers to Roman numerals.
OtherUniversity Absence Calculator
Absence percentage vs the 25% denial limit.
OtherGregorian to Hijri Converter
Convert any Gregorian date to Hijri (official Umm al-Qura calendar).
OtherHijri to Gregorian Converter
Convert a Hijri date to Gregorian with the weekday.