Calculators and finance
Calculators and finance: 25 free online tools. Compare tasks, read instructions and choose a tool. No account required.
Calculate percentages, loan payments, interest, taxes and everyday numeric results. Choose the calculator that matches your assumptions and check units, time periods and rounding. Financial and health calculations are estimates; each guide explains the supported inputs.
Choose a tool 25
Percentage calculator
Calculate a percentage of a value.
Calculators and financeDiscount calculator
Work out a discounted price and optional tax.
Calculators and financeFraction calculator
Add, subtract, multiply and divide exact fractions.
Calculators and financeScientific calculator
Evaluate a restricted real-number arithmetic expression.
Calculators and financeAverage calculator
Find mean, median, range and standard deviation.
Calculators and financeRatio calculator
Simplify a ratio and compare its parts.
Calculators and financeRule of three calculator
Solve a direct proportion from three values.
Calculators and financePercentage increase calculator
Calculate the change between two values.
Calculators and financeCompound interest calculator
Estimate growth with regular contributions and compounding.
Calculators and financeSimple interest calculator
Calculate interest from principal, rate and time.
Calculators and financeLoan payment calculator
Estimate fixed monthly loan payments.
Calculators and financeMortgage calculator
Estimate a mortgage payment with your monthly costs.
Calculators and financeAmortization schedule
See a loan payoff schedule with extra payments.
Calculators and financeSavings goal calculator
Calculate the monthly contribution needed for a target.
Calculators and financeSalary hourly converter
Compare gross hourly, daily, weekly and yearly pay.
Calculators and financeVAT calculator
Add or remove a VAT rate you supply.
Calculators and financeSales tax calculator
Add a tax rate to a before-tax price.
Calculators and financeTip calculator
Calculate a tip and split the total bill.
Calculators and financeProfit margin calculator
Compare profit margin and markup.
Calculators and financeBreak-even calculator
Find how many units cover your fixed costs.
Calculators and financeROI calculator
Calculate a simple return on investment.
Calculators and financeBMI calculator
Calculate an adult BMI screening estimate.
Calculators and financeCalorie BMR calculator
Estimate adult resting and maintenance energy needs.
Calculators and financeGrade calculator
Calculate weighted grades and a needed final exam score.
Calculators and financeGPA calculator
Calculate GPA with your institution’s point values.
Calculators and finance