Free stock calculators
Each one answers one question about a stock, with real company data filled in.
The calculators
No sign-up. Pick a stock, check the inputs and read the answer.
- WACC CalculatorWeighted average cost of capital, filled in from a company's filings.
- Cost of Equity Calculator (CAPM)The return a stock must earn, from CAPM and today's Treasury yield.
- Dividend CalculatorDividend income from a stock's real payout history and yield.
- Dividend Reinvestment Plan (DRIP) CalculatorDividends reinvested or taken as cash, side by side.
- Kelly Criterion Calculator for Stock InvestorsHow much of your portfolio one idea deserves.
Which one do I need?
- What is this company worth?
- These give you the discount rate for a DCF valuation. WACC Calculator · Cost of Equity Calculator (CAPM)
- How much income will I get?
- These project dividends from a company's real payout history. Dividend Calculator · Dividend Reinvestment Plan (DRIP) Calculator
- How much should I put in one idea?
- This sizes a position from your win rate and payoff. Kelly Criterion Calculator for Stock Investors
Or start from the answer
Each calculator answers one question. MonkScore™ checks more than 7,000 stocks on five things at the same time, so you can start from a ranked list. How the score works →
Score my top stocks14-day free trialCalculators for popular companies
Each link opens a calculator with that company's data filled in.
Questions
The one that fits the decision. To find ideas, use a screener that filters on fundamentals. To value one company, use the WACC and cost of equity calculators. To plan income, use a dividend calculator that works from real payout history. To rank many stocks at once, a scoring system such as MonkScore saves hours of manual comparison.
The five calculators here are free, need no sign-up and fill in real company data: WACC, cost of equity, dividend income, dividend reinvestment and Kelly position sizing. Most brokers also offer a free screener and charts, and SEC EDGAR gives free access to company filings.
AI is good at summarizing filings, news and earnings calls. It is not reliable at calculating: it predicts text, so a figure can look right and be wrong, and its data can be out of date. Use AI to read, and use tools built to calculate for the numbers.
It depends on the question. For dividend income, the dividend calculator, and the DRIP calculator to reinvest. For the discount rate in a valuation, the WACC and cost of equity calculators. For position size, the Kelly calculator. All are free and use each company's reported data.
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