Investments & retirement
See how savings and investments grow over time.
Savings growth and interest
Compound interest calculator
See how savings grow when interest earns interest, with optional regular contributions and a year-by-year chart.
Simple interest calculator
Work out the interest earned and the final balance on an amount at a fixed annual rate over a number of years.
Rule of 72 calculator
Estimate how long it takes money to double, triple, or quadruple at a given annual rate using the rule of 72, 114, and 144.
Savings Calculator
Project how much your savings will be worth with an initial deposit, monthly contributions, an annual interest rate, and a time period.
Investment returns
ROI Calculator
Calculate return on investment (ROI) as a percentage, plus net profit or loss, from an initial investment and a final value. Optionally annualize the return over a holding period.
CAGR calculator
Work out the compound annual growth rate, the total growth, and the total gain from a starting value, an ending value, and a number of years.
Investment return calculator
Work out the total and annualized return on an investment from its starting and ending value over a number of years.
Retirement and purchasing power
Retirement calculator
Project your savings at retirement from your age, current savings, monthly contribution, and expected return — with growth shown separately.
Inflation calculator
Work out the future cost and the future purchasing power of an amount of money from a yearly inflation rate and a number of years.