Investing
Loan, savings, investing and planning calculators using standard amortization mathematics, transparent assumptions and cited conventions.
Compound Interest Calculator
Calculate compound interest with A = P(1+r/n)^nt. Choose annual, quarterly, monthly or daily compounding. Includes Rule of 72 doubling-time estimate.
IRR Calculator
Calculate the Internal Rate of Return (IRR) for any series of cash flows using Newton-Raphson. Enter semicolon-separated values; first is typically negative.
Investment Calculator
Project investment growth from an initial amount and monthly contributions, with inflation-adjusted real value. Educational estimates, not advice.
ROI Calculator
Calculate return on investment (ROI) and the annualized return from amount invested, amount returned and holding period. Includes worked example.
Future Value Calculator
Calculate the future value of a present sum with compound growth: FV = PV(1+r)^n. See total growth over any number of periods, with a worked example.
Present Value Calculator
Calculate the present value of a future sum by discounting: PV = FV/(1+r)^n. See how much a future amount is worth today, with a worked example.
CAGR Calculator
Calculate compound annual growth rate (CAGR) from beginning value, ending value and years. Compare investments with the standard smoothed metric.
Dividend Calculator
Calculate dividend yield and projected annual and monthly dividend income from share price, dividend per share and number of shares held.
NPV Calculator (Net Present Value)
Calculate the net present value of a series of future cash flows at a chosen discount rate, plus the profitability index, using standard corporate-finance math.
DCF Calculator (Discounted Cash Flow)
Estimate enterprise value with a discounted cash flow model: projected free cash flow growth plus a Gordon-growth terminal value, discounted at your WACC.
Payback Period Calculator
Calculate how long it takes to recover an initial investment from a series of future cash flows — both simple payback and discounted payback.
Bond Calculator (Bond Price)
Calculate a bond's price from its face value, coupon rate, years to maturity and yield to maturity, using standard semiannual-coupon bond pricing.
Bond Yield Calculator (Yield to Maturity)
Calculate a bond's yield to maturity (YTM) and current yield from its market price, face value, coupon rate and years to maturity.
Investment Fee Calculator (Fee Drag)
Calculate how much annual investment fees reduce your long-term portfolio value compared to an identical fee-free investment, compounded over time.
Expense Ratio Calculator
Calculate the annual, monthly and 10-year dollar cost of a fund's expense ratio on a given investment amount.
Expected Return Calculator (Portfolio)
Calculate a portfolio's weighted-average expected return from the weights and expected returns of its individual holdings or asset classes.
Average Annual Return Calculator (CAGR)
Calculate the compound annual growth rate (CAGR) between a starting and ending investment value, plus total return and simple average return.
Mutual Fund Calculator (SIP Growth)
Project the future value of regular monthly mutual fund contributions, net of the fund's expense ratio, and see how much the expense ratio costs you.
Stock Profit Calculator
Calculate stock trading profit or loss, return percentage and breakeven price, including buy and sell fees or commissions.
Stock Average Calculator (Average Cost Basis)
Calculate the average cost per share (weighted average cost basis) across multiple stock purchases made at different prices and quantities.
Profitability Index Calculator
Calculate the profitability index (benefit-cost ratio) of an investment from its cash flows and discount rate to see whether it creates or destroys value.
Real Rate of Return Calculator
Calculate your inflation-adjusted real rate of return using the exact Fisher equation, plus the simple nominal-minus-inflation approximation for comparison.
Sharpe Ratio Calculator
Calculate the Sharpe ratio of a portfolio from its return, the risk-free rate, and standard deviation to measure risk-adjusted performance.
Stock Split Calculator
Calculate how many shares you will own and the adjusted share price after a stock split (or reverse split) — and see why the position value is unchanged.
P/E Ratio Calculator
Calculate the price-to-earnings (P/E) ratio and earnings yield of a stock from its share price and earnings per share (EPS).
EPS Calculator
Calculate basic earnings per share (EPS) from net income, preferred dividends, and weighted average shares outstanding, following the standard accounting formula.
Enterprise Value Calculator
Calculate enterprise value (EV) from market capitalization, total debt, and cash — the takeover-style measure of what a whole business costs.
EV/EBITDA Calculator
Calculate the EV/EBITDA multiple (enterprise multiple) from enterprise value and EBITDA, plus the implied EBITDA yield, for company valuation comparisons.
WACC Calculator
Calculate the weighted average cost of capital (WACC) from equity and debt values, cost of equity, cost of debt, and the tax rate.
Dividend Payout Ratio Calculator
Calculate the dividend payout ratio and retention ratio from total dividends and net income to see how much profit a company distributes versus reinvests.