Try the Graham Number Calculator Widget
Free for any site, including commercial ones. Keep the small credit line at the bottom of the widget so readers can find the full version. Nothing is stored about the people who use it. See the disclaimer.
How to add it to your site
- Copy the code Use the copy button in the Embed code box so nothing is lost to line wrapping. It is a single iframe tag and it does not need anything else.
- Open the page you want it on In WordPress add a Custom HTML block, in Wix use the Embed HTML element, in Squarespace use a Code block, and on a hand-built site paste it straight into your HTML.
- Paste and publish The widget appears immediately. If you see an empty space instead, your editor has stripped the iframe tag, which the HTML embed guide explains how to work around.
- Adjust the look if you want to Add the parameters in the table below to the iframe URL to change the theme, the accent colour or the height. Nothing needs to be configured on our side.
Customisation options
| Parameter | Values | What it does |
|---|---|---|
theme | auto, light, dark | Default follows the reader's own system setting, so the widget looks right on a dark site and a light one without you choosing. |
accent | Six hex digits, e.g. accent=1A56DB | Recolours the header bar and the primary button to match your brand. |
header | 1 or 0 | Set to 0 to hide the title bar when your page already has a heading above the widget. |
breakdown | 1 or 0 | Set to 0 to hide the calculation breakdown for a more compact block. |
corners | 1 or 0 | Set to 0 for square corners if your design has no rounding anywhere else. |
width | full | Removes the 520px maximum so the widget stretches to its container. |
Parameters are added to the iframe URL as a normal query string, for example
/embed/graham-number-calculator.html?theme=dark&accent=1A56DB&header=0. The
widget builder lets you set all of them visually and hands you the finished code.
Why embed the Graham Number Calculator
Benjamin Graham's defensive formula needs two inputs, EPS and book value per share, and this widget applies it exactly as written. It returns the maximum price Graham's criteria would pay and compares it to the current price, so readers see the margin of safety or its absence. A natural fit for value investing content and investor club pages.
What the widget calculates
Benjamin Graham proposed a blunt ceiling for a defensive investor: a share should not cost more than the square root of 22.5 times earnings per share times book value per share. The 22.5 comes from his limits of 15 times earnings and 1.5 times book.
It is deliberately conservative and it rules out most of the market, which was the point. Treat it as a screen for asset-backed value rather than as a valuation, because it ignores growth, cash flow and everything qualitative.
The embedded version keeps the inputs and the result. The full Graham Number Calculator on TradeAnswers adds worked examples, the method behind the numbers and a long FAQ.
Who this widget suits
Investing and share research blogs
Readers can value a share on the page instead of opening a spreadsheet.
Finance courses and study sites
A live calculation under the formula makes the method concrete.
Investor clubs and newsletters
A shared tool gives members a common way to compare companies.
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The full library of free trading widgets has more than a hundred tools, and the widget builder lets you preview and configure any of them before you copy the code.