12 browser tools
Calculators
Use explicit formulas for everyday business math. Enter your own figures, inspect the result and see how it was calculated.
Profit Margin CalculatorCalculate gross profit and margin from your cost and revenue.Markup CalculatorFind a selling price from markup, or calculate markup from a price.Percentage Change CalculatorMeasure the percentage increase or decrease between two values.Discount CalculatorFind the sale price and savings after a percentage discount.Break-even CalculatorCalculate how many units you need to sell to cover fixed costs.Business Days CalculatorCount working days between dates with your own weekends and holidays.Compound Interest CalculatorCalculate how savings grow with compound interest: starting amount, monthly contributions, rate, years and yearly, quarterly, monthly or daily compounding, with a year-by-year table.Percentage CalculatorWork out X% of a number, what percentage one number is of another, or increase and decrease a value by a percentage, with live results.VAT / GST CalculatorAdd VAT, GST or sales tax to a net price, or remove it from a gross price, at any rate, showing net, tax and gross amounts.Loan CalculatorCalculate the monthly payment, total interest and total cost of a fixed-rate loan or mortgage, with a year-by-year amortisation table.Age CalculatorCalculate exact age in years, months and days on any date, plus total days and weeks lived and the number of days until the next birthday.Date Difference CalculatorCount the days, weeks, months and years between two dates, with an option to include the end date, updated as you choose dates.
Work locally, with clear limits
Each tool explains its inputs, method and limitations. Outputs are created on your device. Read the methodology or search all tools.