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Calculators
Everyday math and money calculations with assumptions shown clearly.
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45 practical tools
Discount calculatorFeaturedSee the final price and exactly how much you save.Percentage calculatorFeaturedFind a percentage of any number instantly.Air conditioner running cost comparisonCompare two AC units and annual electricity costs using their consumption, not cooling capacity alone.Air conditioner size calculator by room areaEstimate AC capacity by room area in BTU/h and tons. A 30 m² room gives a preliminary 18000–24000 BTU/h range; check room conditions before buying.Average CalculatorFind the mean, median and mode of a list, or add weights for a weighted average.Average Purchase CostCombine purchase quantities, prices and fees into a weighted average cost.BMI CalculatorCalculate adult body mass index using metric or imperial measurements.Break-even calculatorPlan monthly and daily sales from named expenses, variable costs and a profit target.CAGR CalculatorAnnualize growth between two positive values over a chosen number of years.Compound interest calculatorEstimate investment growth with a fixed rate and compounding schedule.Concrete Volume Calculator — Slabs in m³ & LitresHow much concrete do you need? Enter slab length and width in metres and depth in centimetres. Calculate cubic metres and litres, with an optional waste allowance.Reference currency converterConvert supported currencies locally using dated ECB reference rates.Electricity Cost CalculatorEstimate energy use and cost from constant power, daily hours and your tariff.EV charging cost and petrol savings calculatorSee the difference in energy costs per 100 km, month and year using your prices and consumption.Event budget calculatorName your event, add costs and notes, and print an A4 budget with an automatic total.Finishing quote comparison by line itemUse the same quantities for two quotes and spot missing prices before comparing totals and printing.Exact Fraction CalculatorAdd, subtract, multiply, divide or simplify exact integer fractions.Fuel Trip CostEstimate litres, total fuel cost and equal shares for the entered route.Semester and Cumulative GPA CalculatorCalculate your semester GPA from course grade points and credits, then optionally include previous results for a cumulative GPA.Healthy weight calculator by heightCalculate an adult BMI reference weight range for your height, ages 20 and older, not one prescribed ideal weight.Inflation and Purchasing Power CalculatorEstimate future equivalent cost and the purchasing power of unchanged money.Inheritance calculatorExplore exact inheritance shares under a declared Saudi method, with prior estate rights, blocking, awl and radd.Trade Profit CalculatorCalculate a long-position trade’s profit after purchase and sale fees.Loan CalculatorCalculate monthly payments and compare the effect of extra repayments.Margin and Markup CalculatorCompare profit margin, cost markup and the resulting selling price.Metal Melt ValueEstimate pure-metal value from your weight, purity and entered price.Mortgage CalculatorEstimate a fixed-rate home loan payment and see the principal, interest and repayment schedule.My project — room preparation plannerEnter room dimensions once and combine floor, paint, cooling and quoted prices in a printable plan.Paint quantity calculatorEstimate litres of paint from area, coats and the coverage on your paint can, with optional deductions and container sizes.Percentage change calculatorMeasure the percentage increase or decrease between two values.Random Number Generator — Choose Your RangeChoose a range and how many integers you need. Generate numbers with or without repeats, then copy the list.Ratio CalculatorSimplify a ratio, split a total fairly, or find an equivalent proportion.Recurring Investment ProjectionSeparate monthly contributions from hypothetical compounded gains.Ring size calculator from circumference or diameterEstimate a US ring size from finger circumference or the inside diameter of a fitting ring in millimeters.Salary to Hourly Calculator — Monthly or Annual PayCalculate hourly pay from a monthly or annual salary and your work schedule. Compare gross hourly, weekly and monthly pay before deductions.Savings Goal CalculatorCalculate the monthly contribution needed to reach your savings target.Target Sale PriceFind the unit sale price needed for a chosen net profit after fees.Tax CalculatorCalculate net amount, tax and gross amount using a rate you enter.Tile layout, cuts and box plannerCompare both tile orientations in a rectangular room, inspect edge cuts and boxes, and print your plan.TV size calculator by viewing distanceFind a 16:9 television size range in inches from the distance between your seat and the screen.Unit Price ComparisonCompare offers using total price and quantity in the same selected unit.Wedding cost calculator — printable budgetList your wedding expenses, total the amounts, add notes and print an A4 budget.Saudi university weighted admission calculatorCalculate your weighted score or the Qiyas aptitude or achievement score you need, using your chosen admission weights.Work Hours CalculatorAdd shift hours, subtract breaks and optionally estimate pay at one hourly rate.Zakat calculatorEstimate Zakat on cash, gold, silver and trade assets using your own dated prices and a stated method.