Finance
Pick a Finance calculator below. Every tool includes the formula, a worked example, and answers to common questions.
All calculators
Auto Loan Calculator
Price a vehicle loan: subtract down payment and trade-in from the car price to get the amount financed, then see monthly…
Compound Interest Calculator
See how savings or investments grow when interest earns interest. Add regular deposits to see the full picture.…
Credit Card Payoff Calculator
See how long it takes to clear your balance, how much interest you’ll pay, and how extra payments change the picture.…
Currency Converter
Enter an amount, pick two currencies and see the converted value with the exchange rate in both directions. Rates are da…
Discount Calculator
See the sale price, how much you save, and how stacked coupons change the deal — with a quick compare of other discount …
Hourly to Salary Calculator
Enter any pay rate and period to see equivalent hourly, daily, weekly, biweekly, semi-monthly, monthly, and annual figur…
Income Tax Calculator
Enter annual income and filing status to estimate federal income tax, your effective and marginal rates, and how each br…
Inflation Calculator
Compare purchasing power across years with approximate CPI annual averages, or project how today’s amount changes at a c…
Loan Calculator
Estimate the fixed monthly payment on a personal or auto-style loan from the amount, rate and term. Compare terms and se…
Markup vs Margin Calculator
Markup is profit ÷ cost; margin is profit ÷ selling price. The same dollars of profit are a higher markup % than margin …
ROI Calculator
Measure gain or loss relative to what you invested. Enter the initial amount and final value for ROI as a percentage, an…
Savings Goal Calculator
Set a target and what you’ve already saved. See the monthly deposit you need to reach it by a date, or how long it takes…
Solar Panel Payback Calculator
Estimate how many years it takes for electricity bill savings to repay your net solar investment. Choose net metering or…
Take-Home Pay Calculator
Enter gross annual income and filing status to estimate monthly take-home after federal income tax and employee FICA. Op…
VAT Calculator
Add VAT or sales tax to a price, or take it out of a price that already includes it. Pick a European country to use its …
Regional versions
UK Income Tax
Enter annual income to estimate UK Income Tax, your effective and marginal rates, and how each band contributes — Englan…
United StatesUS Federal Income Tax
Enter annual income and filing status to estimate federal income tax, your effective and marginal rates, and how each br…