Percentage Calculator
Find a percentage of a number, including the result after adding or subtracting it.
Math
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Discount Calculator
Calculate the price after a discount and tax, and see how much you save.
Finance
Loan Calculator
Estimate payments and interest, and view the full monthly repayment schedule.
Finance
Mortgage Calculator
Calculate a mortgage payment after the down payment, with optional tax and insurance.
Finance
Compound Interest Calculator
Explore how an initial amount grows when returns are reinvested.
Finance
Savings Calculator
Estimate a future balance with a fixed deposit every month.
Finance
BMI Calculator
Calculate adult body mass index from weight and height.
Health & fitness
Calorie Calculator
Estimate daily energy needs using the Mifflin–St Jeor equation.
Health & fitness
Body Fat Calculator
Get a rough body fat estimate from body measurements using the U.S. Navy method.
Health & fitness
Age Calculator
Find the age in years, months and days between two dates.
Everyday life
Date Difference Calculator
Count the days and weeks between a start date and an end date.
Everyday life
Unit Converter
Convert units of length, mass, temperature and volume.
Everyday life
Fraction Calculator
Add, subtract, multiply or divide two fractions and simplify the result.
Math
Quadratic Equation Calculator
Solve ax² + bx + c = 0 and identify the type of roots.
Math
Statistics Calculator
Find the mean, median, range and standard deviation of a list of numbers.
Math
Tip and Split Bill Calculator
Add a tip and split the total bill equally.
Everyday life
VAT Calculator
Add tax to a price or extract it from a total using the rate you enter.
Finance
Profit Margin Calculator
Find product profit after shipping and payment fees, and distinguish margin from markup.
Finance
Break-Even Calculator
Find the number of units needed to cover fixed and variable costs before profit.
Finance
ROI Calculator
Calculate net profit and return after the initial investment and additional costs.
Finance
CAGR Calculator
Convert the change between starting and ending values into an equivalent annual growth rate.
Finance
Page RPM Ad Revenue Calculator
Explore ad revenue scenarios using page views and a Page RPM you choose.
Finance
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Understand the numbers
English and Arabic explanations, practical examples and printable results.
From numbers to decisions
Examples to get you started
For business owners
Profit margin or markup: what is the difference?
A practical product-pricing example covering shipping, fees, and the break-even point.
Read the guideFinancial decisions
How to compare loans beyond the monthly payment
Compare payments, total interest, and loan terms, and learn how to read a repayment schedule.
Read the guideFor website owners
How much could your website earn from ads?
Understand page RPM, distinguish page views from visits and ad impressions, and calculate your scenarios.
Read the guide