Free stock calculators for market cap, valuation, returns, trade size, options, and retirement. Enter your own figures, or convert U.S. market hours into your time zone. Short guides in Learn explain each formula.
Measure company size from share price and shares outstanding, or reverse a target cap into a share price.
Turn earnings or cash flow into an implied value, and see what growth a price assumes.
Average cost across purchases, round-trip profit or loss, and annualized growth — including money-weighted XIRR.
Project compounding, savings targets, dividend reinvestment, and the trades that restore target weights.
Turn a risk limit into a share count, find a sell price that covers fees, and adjust a position for a split.
Estimate premium, annualized return, and the price that leaves a covered call or cash-secured put at break-even.
See when the U.S. stock market opens and closes in a time zone you pick.