Instant-result tools for finance, taxes, math, business, and health. No signup, no ads. Just answers.
Free compound interest calculator. Enter your principal, interest rate, and time period to see how your money grows with compounding.
Free mortgage calculator. Calculate your monthly payment, total interest, and total cost for any home loan amount, rate, and term.
Free loan repayment calculator. See your monthly payment, total interest paid, and full amortization schedule for any loan.
Free retirement savings calculator. See how much you need to save monthly to reach your retirement goal based on your age and expected returns.
Free investment return calculator. Calculate your portfolio growth with initial investment, monthly contributions, and expected annual returns.
Free credit card payoff calculator. See how long it takes to pay off your balance and how much interest you'll pay at your current monthly payment.
Free emergency fund calculator. Find out how much you need in your emergency fund based on your monthly expenses and personal risk factors.
Free net worth calculator. Add up your assets and liabilities to calculate your total net worth and track your financial progress.
Free dollar cost averaging calculator. See how regular investing over time can reduce risk and build wealth compared to lump-sum investing.
Free APR and APY calculator. Convert between annual percentage rate and annual percentage yield, and understand the true cost of borrowing.
Free inflation calculator. See how inflation erodes purchasing power over time and what today's dollars will be worth in the future.
Free capital gains tax calculator. Calculate your tax liability on investment profits based on purchase price, sale price, and holding period.
Free VAT calculator. Quickly add or remove VAT at any rate. Works for UK VAT (20%), EU VAT, and any custom tax rate.
Available for 12 countries
Available for 12 countries
Available for 12 countries
Available for 12 countries
Available for 12 countries
Free percentage calculator with three modes: find percentage of a number, calculate percentage change, and find what percent X is of Y.
Free statistics calculator. Enter any data set to instantly calculate mean, median, mode, range, and count.
Free standard deviation calculator. Calculate population and sample standard deviation, variance, and mean for any data set.
Free Pythagorean theorem calculator. Find any missing side of a right triangle using a² + b² = c².
Free circle calculator. Calculate the area, circumference, and diameter of any circle from its radius.
Free volume calculator for common 3D shapes. Calculate the volume of cubes, spheres, cylinders, cones, and rectangular prisms.
Free probability calculator. Calculate the probability of an event, odds in favor, and odds against from favorable and total outcomes.
Free profit margin calculator. Calculate gross profit margin, net margin, and markup from cost and revenue figures.
Free break-even calculator. Find out how many units you need to sell to cover your fixed and variable costs.
Free ROI calculator. Calculate return on investment as a percentage from your investment cost and gain.
Free markup calculator. Calculate selling price from cost and markup percentage, or find the markup from cost and selling price.
Free unit converter. Convert between common units of length, weight, volume, and more with instant results.
Educational currency converter with reference exchange rates. Convert between major world currencies for estimation purposes.
Free temperature converter. Convert between Celsius, Fahrenheit, and Kelvin instantly with the formulas shown.