Money & taxes
Mortgage, auto loan, compound interest, retirement, child cost, sales tax and tip calculators, with the formulas explained.
8 tools
- Mortgage calculator Work out your monthly payment and total interest, with a yearly amortization schedule.
- Auto loan calculator Estimate your monthly car payment, total interest and APR.
- Compound interest calculator See how a lump sum or monthly contributions grow with compound interest.
- Sales tax calculator Add sales tax to a price, or back it out of a total.
- Tip calculator Work out the tip, split the bill, and round up to the dollar.
- Retirement calculator Find the earliest age you can retire and your FIRE number, with inflation, housing and pensions.
- Cost of raising a child calculator Raise a child to 18, 22 or a master’s, with each country’s schools, fees and benefits.
- Break-even rebound calculator How much a stock must rise to break even, how long it takes, and what averaging down does.