How to use this site
Every tool on this page is browser-based: you enter numbers, you get a result. Nothing is sent to a server, so there is no signup, no account, and no portfolio data for anyone to leak. The formulas are shown on every page; if you disagree with the arithmetic, you can rewrite the inputs and check.
Three tips for first-time users. First, read the FAQ on the tool you are using before assuming the result is wrong — most "bugs" are actually the model behaving correctly with surprising inputs. Second, run the calculation with a second set of numbers you would defend, and compare the two results. If they diverge wildly, the model has not told you anything useful and you need a wider margin of safety. Third, treat the page's worked examples as starting points, not endorsements: they run on the same hypothetical company used across this site, so the numbers illustrate a method rather than describe any real business.
Which tool for which question
The calculators fall into a few loose groups. Discounted-cash-flow tools (DCF, reverse DCF) answer "what is this business worth?" — useful when you can forecast cash flow reliably. Multiple-based tools (P/E, P/B, EV/EBITDA) compare the price against earnings, book value or operating cash flow — useful for relative valuation across a sector. Yield tools (dividend yield, payout ratio, free cash flow yield) describe how much cash the company returns or generates. Performance tools (CAGR, total return) describe the history of returns, not the future.
No single tool answers all questions. A defensible valuation usually combines two or three of them and asks whether the answers agree.
What you will not find here
This site deliberately does not include stock screeners, technical indicators, options pricers, or portfolio trackers. Those are different questions, and they deserve their own tools. Coverage is narrow on purpose — equity valuation models, well implemented, beat a dashboard full of half-working widgets.
Why intrinsic value matters
A stock's price is what you pay; its intrinsic value is what you get. Tools like a DCF calculator estimate the present value of all future cash flows a business will generate, giving you a rational anchor for buy and sell decisions instead of chasing headlines.
Which calculator should I use?
- Growing, cash-generative businesses → DCF Calculator
- Mature dividend payers (utilities, consumer staples) → Dividend Discount Model
- Checking whether growth estimates are realistic → CAGR Calculator
- How much income a holding actually pays → Dividend Yield Calculator
- Whether that dividend is safe → Payout Ratio Calculator
- Is the multiple reasonable for the growth → P/E Ratio Calculator
- A hard ceiling price on a value stock → Graham Number Calculator
- What you actually earned over a full hold → Total Return Calculator
- Comparing companies with different debt levels → EV/EBITDA Calculator
- Picking a discount rate for a DCF → WACC Calculator
- A dividend grower that is not yet mature → Two-Stage DDM Calculator
- Per-share profit after option dilution → EPS Calculator
- Asset-based value, banks and insurers → P/B Ratio Calculator
- How big a discount you need before buying → Margin of Safety Calculator
- What a portfolio becomes with regular contributions → Compound Interest Calculator
- Whether a growth story is already priced in → Reverse DCF Calculator
- Is that ROE coming from quality or leverage → DuPont ROE Calculator
- How many shares to buy for a set risk → Position Size Calculator
Guides
- How to Value a Stock — the full valuation sequence, with a worked example
- Free Cash Flow Explained — the input every DCF depends on
- Margin of Safety Explained — why the discount is not optional
- Dividend Investing Guide — yield, payout ratio and dividend safety
- How to Read a Cash Flow Statement — three sections, eight combinations
- Intrinsic Value vs Market Price — why the two diverge, and how to behave
- How to Read a Balance Sheet — the asset side, and the four ways it misleads
- What Is a Good P/E Ratio? — the arithmetic behind a justified multiple
- Dividend Yield vs Total Return — why a high yield is not a high return
- How to Compare Two Stocks — a five-axis framework, worked side by side
- WACC Explained — the discount rate, built from five sourced inputs
- The DCF Method Explained — the forecast half of a DCF, and checking the terminal value
- The Graham Number Explained — Graham's ceiling tested on two companies, and what it cannot see
All calculators run entirely in your browser. Results are estimates for educational purposes and are not investment advice.